From 1b12d6ca8914aff61605311d2bac00a136921f48 Mon Sep 17 00:00:00 2001
From: Andreas Solleder <asol@num42.de>
Date: Sat, 6 Jun 2026 00:20:16 +0200
Subject: [PATCH 1/2] =?UTF-8?q?feat(metrics):=20R=C3=A9nyi=20entropy=20spe?=
 =?UTF-8?q?ctrum=20&=20Hill=20numbers=20(#46)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add CodeQA.Metrics.File.RenyiEntropy: generalizes Shannon entropy across
order parameter α ∈ {0,1,2,∞} over the token distribution, yielding a
spectrum H₀ ≥ H₁ ≥ H₂ ≥ H_∞ that characterizes distribution shape rather
than a single scalar.

- renyi_0 (Hartley), renyi_1 (Shannon limit), renyi_2 (collision),
  renyi_inf (min-entropy)
- hill_1, hill_2 = 2^H_α — effective vocabulary size
- spectrum_slope = H₀ − H₂ — concentration indicator
- edge cases: empty → zeros; single token → H=0, Hill=1.0
- registered after LexicalConcentration (complementary concentration measure)
---
 lib/codeqa/engine/analyzer.ex                 |   1 +
 lib/codeqa/metrics/file/renyi_entropy.ex      | 103 ++++++++++++++++
 .../metrics/file/renyi_entropy_test.exs       | 113 ++++++++++++++++++
 3 files changed, 217 insertions(+)
 create mode 100644 lib/codeqa/metrics/file/renyi_entropy.ex
 create mode 100644 test/codeqa/metrics/file/renyi_entropy_test.exs

diff --git a/lib/codeqa/engine/analyzer.ex b/lib/codeqa/engine/analyzer.ex
index da35826..18bab5e 100644
--- a/lib/codeqa/engine/analyzer.ex
+++ b/lib/codeqa/engine/analyzer.ex
@@ -17,6 +17,7 @@ defmodule CodeQA.Engine.Analyzer do
             |> Registry.register_file_metric(Metrics.Heaps)
             |> Registry.register_file_metric(Metrics.Vocabulary)
             |> Registry.register_file_metric(Metrics.LexicalConcentration)
+            |> Registry.register_file_metric(Metrics.RenyiEntropy)
             |> Registry.register_file_metric(Metrics.Ngram)
             |> Registry.register_file_metric(Metrics.Halstead)
             |> Registry.register_file_metric(Metrics.Readability)
diff --git a/lib/codeqa/metrics/file/renyi_entropy.ex b/lib/codeqa/metrics/file/renyi_entropy.ex
new file mode 100644
index 0000000..0c31be9
--- /dev/null
+++ b/lib/codeqa/metrics/file/renyi_entropy.ex
@@ -0,0 +1,103 @@
+defmodule CodeQA.Metrics.File.RenyiEntropy do
+  @moduledoc """
+  Computes the Rényi entropy spectrum and Hill numbers over the token
+  distribution.
+
+  Rényi entropy `H_α` generalizes Shannon entropy across an order parameter
+  `α`: low orders weight rare tokens, high orders only the dominant ones. The
+  spectrum `H₀ ≥ H₁ ≥ H₂ ≥ H_∞` therefore characterizes the *shape* of the
+  distribution rather than a single scalar. `spectrum_slope = H₀ − H₂` is a
+  concentration indicator: near zero for a flat (uniform) vocabulary, large
+  when a few tokens dominate.
+
+  Hill numbers `D_α = 2^(H_α)` express the *effective vocabulary size* — how
+  many tokens really count — which is more interpretable than raw `vocab_size`.
+
+  See [Rényi entropy](https://en.wikipedia.org/wiki/R%C3%A9nyi_entropy) and
+  [Hill numbers / diversity](https://en.wikipedia.org/wiki/Diversity_index#Effective_number_of_species).
+  """
+
+  @behaviour CodeQA.Metrics.File.FileMetric
+
+  @impl true
+  def name, do: "renyi_entropy"
+
+  @impl true
+  def keys,
+    do: [
+      "renyi_0",
+      "renyi_1",
+      "renyi_2",
+      "renyi_inf",
+      "hill_1",
+      "hill_2",
+      "spectrum_slope"
+    ]
+
+  @impl true
+  def description,
+    do:
+      "Rényi entropy spectrum (α ∈ {0,1,2,∞}) and Hill numbers (effective vocabulary size) over the token distribution."
+
+  @spec analyze(map()) :: map()
+  @impl true
+  def analyze(%{tokens: []}), do: zero_result()
+
+  def analyze(%{token_counts: token_counts, tokens: tokens}) do
+    total = length(tokens)
+    probs = token_counts |> Map.values() |> Enum.map(&(&1 / total))
+    spectrum(probs)
+  end
+
+  defp spectrum(probs) do
+    h0 = renyi_0(probs)
+    h1 = renyi_1(probs)
+    h2 = renyi_2(probs)
+    h_inf = renyi_inf(probs)
+
+    %{
+      "renyi_0" => round4(h0),
+      "renyi_1" => round4(h1),
+      "renyi_2" => round4(h2),
+      "renyi_inf" => round4(h_inf),
+      "hill_1" => round4(hill(h1)),
+      "hill_2" => round4(hill(h2)),
+      "spectrum_slope" => round4(h0 - h2)
+    }
+  end
+
+  # H₀ = log2(support size) — Hartley entropy, counts only distinct tokens.
+  defp renyi_0(probs), do: log2(length(probs))
+
+  # H₁ = -Σ pᵢ log2 pᵢ — Shannon entropy, the α→1 limit.
+  defp renyi_1(probs),
+    do: -Enum.reduce(probs, 0.0, fn p, acc -> acc + p * :math.log2(p) end)
+
+  # H₂ = -log2(Σ pᵢ²) — collision entropy.
+  defp renyi_2(probs) do
+    sum_sq = Enum.reduce(probs, 0.0, fn p, acc -> acc + p * p end)
+    -:math.log2(sum_sq)
+  end
+
+  # H_∞ = -log2(max pᵢ) — min-entropy, governed by the most frequent token.
+  defp renyi_inf(probs), do: -:math.log2(Enum.max(probs))
+
+  # Hill number D_α = 2^(H_α), the effective vocabulary size.
+  defp hill(h), do: :math.pow(2, h)
+
+  defp log2(n) when n > 0, do: :math.log2(n)
+  defp log2(_), do: 0.0
+
+  defp round4(x), do: Float.round(x * 1.0, 4)
+
+  defp zero_result,
+    do: %{
+      "renyi_0" => 0.0,
+      "renyi_1" => 0.0,
+      "renyi_2" => 0.0,
+      "renyi_inf" => 0.0,
+      "hill_1" => 0.0,
+      "hill_2" => 0.0,
+      "spectrum_slope" => 0.0
+    }
+end
diff --git a/test/codeqa/metrics/file/renyi_entropy_test.exs b/test/codeqa/metrics/file/renyi_entropy_test.exs
new file mode 100644
index 0000000..110acc3
--- /dev/null
+++ b/test/codeqa/metrics/file/renyi_entropy_test.exs
@@ -0,0 +1,113 @@
+defmodule CodeQA.Metrics.File.RenyiEntropyTest do
+  use ExUnit.Case, async: true
+
+  alias CodeQA.Engine.Pipeline
+  alias CodeQA.Metrics.File.RenyiEntropy
+
+  defp ctx(code), do: Pipeline.build_file_context(code)
+  defp result(code), do: RenyiEntropy.analyze(ctx(code))
+
+  describe "analyze/1 - edge cases" do
+    test "returns zeros for empty content" do
+      assert result("") == %{
+               "renyi_0" => 0.0,
+               "renyi_1" => 0.0,
+               "renyi_2" => 0.0,
+               "renyi_inf" => 0.0,
+               "hill_1" => 0.0,
+               "hill_2" => 0.0,
+               "spectrum_slope" => 0.0
+             }
+    end
+
+    test "single unique token has zero entropy across the spectrum" do
+      r = result("x x x x")
+      assert r["renyi_0"] == 0.0
+      assert r["renyi_1"] == 0.0
+      assert r["renyi_2"] == 0.0
+      assert r["renyi_inf"] == 0.0
+      assert r["spectrum_slope"] == 0.0
+    end
+
+    test "single unique token has hill numbers equal to vocab_size of 1" do
+      r = result("x x x x")
+      assert r["hill_1"] == 1.0
+      assert r["hill_2"] == 1.0
+    end
+  end
+
+  describe "analyze/1 - uniform distribution (flat spectrum)" do
+    test "uniform tokens give renyi_0 == renyi_2 and zero slope" do
+      r = result("a b c d e f g h")
+      assert r["renyi_0"] == r["renyi_2"]
+      assert r["spectrum_slope"] == 0.0
+    end
+
+    test "uniform tokens give renyi_0 == renyi_inf (all orders collapse)" do
+      r = result("a b c d e f g h")
+      assert r["renyi_0"] == r["renyi_inf"]
+      assert r["renyi_1"] == r["renyi_0"]
+    end
+
+    test "uniform vocab of 8 yields renyi_0 of log2(8) == 3.0" do
+      r = result("a b c d e f g h")
+      assert r["renyi_0"] == 3.0
+    end
+
+    test "hill numbers equal vocab_size for a uniform distribution" do
+      r = result("a b c d e f g h")
+      assert r["hill_1"] == 8.0
+      assert r["hill_2"] == 8.0
+    end
+  end
+
+  describe "analyze/1 - dominated distribution (steep spectrum)" do
+    test "dominated token gives large positive spectrum_slope" do
+      # x: 100× against 8 singletons → H₀ = log2(9) ≈ 3.17 but H₂ collapses
+      # toward 0, so the slope is large. (With only 2 distinct tokens H₀ caps
+      # at 1.0, which bounds the slope below 1 — needs a wider vocab to show.)
+      code = String.duplicate("x ", 100) <> "a b c d e f g h"
+      assert result(code)["spectrum_slope"] > 1.0
+    end
+
+    test "renyi monotonically decreases with order for a skewed distribution" do
+      code = "x x x x x x x y"
+      r = result(code)
+      assert r["renyi_0"] >= r["renyi_1"]
+      assert r["renyi_1"] >= r["renyi_2"]
+      assert r["renyi_2"] >= r["renyi_inf"]
+    end
+
+    test "hill_2 is much smaller than vocab_size when one token dominates" do
+      # vocab_size of 5 but effective vocabulary collapses toward 1
+      code = String.duplicate("x ", 100) <> "a b c d"
+      vocab_size = 5
+      assert result(code)["hill_2"] < vocab_size / 2
+    end
+  end
+
+  describe "behaviour contract" do
+    test "name/0 is renyi_entropy" do
+      assert RenyiEntropy.name() == "renyi_entropy"
+    end
+
+    test "keys/0 matches the keys returned by analyze/1" do
+      keys = RenyiEntropy.keys()
+      r = result("a b c a b")
+      assert Enum.sort(keys) == Enum.sort(Map.keys(r))
+    end
+
+    test "keys/0 lists exactly the seven spec keys" do
+      assert Enum.sort(RenyiEntropy.keys()) ==
+               Enum.sort([
+                 "renyi_0",
+                 "renyi_1",
+                 "renyi_2",
+                 "renyi_inf",
+                 "hill_1",
+                 "hill_2",
+                 "spectrum_slope"
+               ])
+    end
+  end
+end

From 285fffe5f245d8270a047b7e7e0060c7f1713087 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Fri, 5 Jun 2026 22:23:33 +0000
Subject: [PATCH 2/2] chore(combined-metrics): sync language coverage and
 scalar vectors [skip ci]

---
 priv/combined_metrics/code_smells.yml         |  50 +++++++-
 priv/combined_metrics/consistency.yml         |  37 +++++-
 priv/combined_metrics/dependencies.yml        |  26 +++-
 priv/combined_metrics/documentation.yml       |  54 +++++++-
 priv/combined_metrics/error_handling.yml      |  30 ++++-
 priv/combined_metrics/file_structure.yml      |  49 ++++++-
 priv/combined_metrics/function_design.yml     |  74 +++++++++--
 priv/combined_metrics/naming_conventions.yml  |  28 +++-
 .../combined_metrics/scope_and_assignment.yml |  58 ++++++++-
 priv/combined_metrics/testing.yml             |  40 +++++-
 priv/combined_metrics/type_and_value.yml      |  49 ++++++-
 priv/combined_metrics/variable_naming.yml     | 121 ++++++++++++++++--
 12 files changed, 550 insertions(+), 66 deletions(-)

diff --git a/priv/combined_metrics/code_smells.yml b/priv/combined_metrics/code_smells.yml
index aee9623..2b16b98 100644
--- a/priv/combined_metrics/code_smells.yml
+++ b/priv/combined_metrics/code_smells.yml
@@ -1,7 +1,7 @@
 consistent_string_quote_style:
   _doc: "Files should use a single, consistent string quoting style throughout."
   _languages: [elixir]
-  _log_baseline: -19.2276
+  _log_baseline: -20.1399
   branching:
     mean_branching_density: 0.0243
     mean_non_blank_count: -0.0248
@@ -89,6 +89,14 @@ consistent_string_quote_style:
     mean_flesch_adapted: 0.0046
     mean_fog_adapted: -0.0301
     mean_total_lines: -0.0248
+  renyi_entropy:
+    mean_hill_1: -0.0705
+    mean_hill_2: -0.1119
+    mean_renyi_0: -0.0141
+    mean_renyi_1: -0.0178
+    mean_renyi_2: -0.0322
+    mean_renyi_inf: -0.1217
+    mean_spectrum_slope: 0.0390
   separator_counts:
     mean_dot_count: -0.1743
     mean_underscore_count: -0.0644
@@ -110,7 +118,7 @@ consistent_string_quote_style:
 no_dead_code_after_return:
   _doc: "There should be no unreachable statements after a return or early exit."
   _excludes_languages: [elixir]
-  _log_baseline: -70.7283
+  _log_baseline: -71.9927
   branching:
     mean_branch_count: -0.9417
     mean_branching_density: -0.1794
@@ -209,6 +217,14 @@ no_dead_code_after_return:
     mean_flesch_adapted: 0.0346
     mean_fog_adapted: 0.0141
     mean_total_lines: -0.7334
+  renyi_entropy:
+    mean_hill_1: -0.1341
+    mean_hill_2: -0.1381
+    mean_renyi_0: -0.0501
+    mean_renyi_1: -0.0360
+    mean_renyi_2: -0.0409
+    mean_renyi_inf: -0.0720
+    mean_spectrum_slope: -0.0737
   separator_counts:
     mean_dot_count: -1.2574
     mean_hyphen_count: -1.8488
@@ -233,7 +249,7 @@ no_dead_code_after_return:
 no_debug_print_statements:
   _doc: "Debug output (`console.log`, `IO.inspect`, `fmt.Println`) must not be left in committed code."
   _languages: [elixir, go, javascript, python, ruby]
-  _log_baseline: -29.5797
+  _log_baseline: -29.0583
   branching:
     mean_branch_count: 0.1865
     mean_branching_density: 0.4692
@@ -338,6 +354,14 @@ no_debug_print_statements:
     mean_flesch_adapted: -0.0375
     mean_fog_adapted: 0.0931
     mean_total_lines: -0.1329
+  renyi_entropy:
+    mean_hill_1: 0.0824
+    mean_hill_2: 0.0412
+    mean_renyi_0: 0.0188
+    mean_renyi_1: 0.0224
+    mean_renyi_2: 0.0114
+    mean_renyi_inf: -0.0190
+    mean_spectrum_slope: 0.0415
   separator_counts:
     mean_dot_count: -0.1479
     mean_hyphen_count: 0.0827
@@ -362,7 +386,7 @@ no_debug_print_statements:
 no_fixme_comments:
   _doc: "FIXME, XXX, and HACK comments indicate known problems that should be resolved before merging."
   _languages: [elixir, go, javascript, python, ruby]
-  _log_baseline: 12.0359
+  _log_baseline: 10.9439
   branching:
     mean_branch_count: 0.1713
     mean_branching_density: 0.1042
@@ -471,6 +495,14 @@ no_fixme_comments:
     mean_flesch_adapted: -0.0152
     mean_fog_adapted: -0.0037
     mean_total_lines: 0.0927
+  renyi_entropy:
+    mean_hill_1: -0.1284
+    mean_hill_2: -0.1032
+    mean_renyi_0: -0.0222
+    mean_renyi_1: -0.0313
+    mean_renyi_2: -0.0296
+    mean_renyi_inf: -0.0276
+    mean_spectrum_slope: -0.0024
   separator_counts:
     mean_dot_count: 0.3139
     mean_hyphen_count: -0.0251
@@ -494,7 +526,7 @@ no_fixme_comments:
 no_nested_ternary:
   _doc: "Nested conditional expressions (ternary-within-ternary) are harder to read than a plain if-else."
   _excludes_languages: [elixir]
-  _log_baseline: 8.9473
+  _log_baseline: 8.7697
   branching:
     mean_branch_count: -0.5662
     mean_branching_density: -0.3441
@@ -594,6 +626,14 @@ no_nested_ternary:
     mean_flesch_adapted: -0.0367
     mean_fog_adapted: 0.3545
     mean_total_lines: -0.2221
+  renyi_entropy:
+    mean_hill_1: -0.0050
+    mean_hill_2: -0.0440
+    mean_renyi_0: 0.0110
+    mean_renyi_1: -0.0014
+    mean_renyi_2: -0.0142
+    mean_renyi_inf: -0.0561
+    mean_spectrum_slope: 0.0714
   separator_counts:
     mean_dot_count: -0.1824
     mean_hyphen_count: -0.1067
diff --git a/priv/combined_metrics/consistency.yml b/priv/combined_metrics/consistency.yml
index 68b3875..107c44e 100644
--- a/priv/combined_metrics/consistency.yml
+++ b/priv/combined_metrics/consistency.yml
@@ -1,7 +1,7 @@
 consistent_casing_within_file:
   _doc: "A file should use one naming convention throughout — no mixing of camelCase and snake_case for the same kind of identifier."
   _languages: [elixir]
-  _log_baseline: -0.6528
+  _log_baseline: -0.8912
   brevity:
     mean_sample_size: -0.0471
   casing_entropy:
@@ -48,6 +48,13 @@ consistent_casing_within_file:
     mean_trigram_unique: -0.0172
   readability:
     mean_avg_line_length: 0.0221
+  renyi_entropy:
+    mean_hill_1: -0.0362
+    mean_hill_2: -0.0104
+    mean_renyi_0: -0.0101
+    mean_renyi_1: -0.0090
+    mean_renyi_2: -0.0030
+    mean_spectrum_slope: -0.0302
   separator_counts:
     mean_underscore_count: 0.4311
   symbol_density:
@@ -65,7 +72,7 @@ consistent_casing_within_file:
 consistent_error_return_shape:
   _doc: "All functions in a module should return errors in the same shape — mixed `nil`, `false`, and `{:error, _}` returns are confusing."
   _languages: [elixir]
-  _log_baseline: -2.8073
+  _log_baseline: -3.3807
   branching:
     mean_branch_count: -0.2800
     mean_branching_density: 0.5563
@@ -163,6 +170,13 @@ consistent_error_return_shape:
     mean_flesch_adapted: -0.0433
     mean_fog_adapted: 0.1454
     mean_total_lines: -0.3834
+  renyi_entropy:
+    mean_hill_1: -0.0658
+    mean_hill_2: -0.0443
+    mean_renyi_0: -0.0167
+    mean_renyi_1: -0.0195
+    mean_renyi_2: -0.0216
+    mean_renyi_inf: -0.0655
   separator_counts:
     mean_dot_count: 0.6069
     mean_hyphen_count: -1.1258
@@ -183,7 +197,7 @@ consistent_error_return_shape:
 consistent_function_style:
   _doc: "A module should not mix one-liner and multi-clause function definitions for the same concern."
   _languages: [elixir]
-  _log_baseline: 57.4562
+  _log_baseline: 60.0235
   branching:
     mean_branch_count: 0.3619
     mean_branching_density: 0.2247
@@ -293,6 +307,14 @@ consistent_function_style:
     mean_flesch_adapted: 0.0263
     mean_fog_adapted: -0.1088
     mean_total_lines: 0.3305
+  renyi_entropy:
+    mean_hill_1: 0.3154
+    mean_hill_2: 0.2457
+    mean_renyi_0: 0.0888
+    mean_renyi_1: 0.0864
+    mean_renyi_2: 0.0741
+    mean_renyi_inf: 0.0286
+    mean_spectrum_slope: 0.1323
   separator_counts:
     mean_dot_count: 0.3510
     mean_hyphen_count: 0.4708
@@ -318,7 +340,7 @@ consistent_function_style:
 same_concept_same_name:
   _doc: "The same domain concept should use the same name throughout a file — mixing `user`, `usr`, and `u` for the same thing harms readability."
   _languages: [elixir]
-  _log_baseline: -13.5397
+  _log_baseline: -22.1414
   brevity:
     mean_sample_size: -1.3457
   compression:
@@ -366,6 +388,13 @@ same_concept_same_name:
     mean_avg_line_length: 0.1837
     mean_avg_sub_words_per_id: -0.1771
     mean_flesch_adapted: 0.2348
+  renyi_entropy:
+    mean_hill_1: -1.3316
+    mean_hill_2: -0.5598
+    mean_renyi_0: -0.2899
+    mean_renyi_1: -0.3546
+    mean_renyi_2: -0.1759
+    mean_spectrum_slope: -0.5362
   separator_counts:
     mean_underscore_count: -0.5711
   symbol_density:
diff --git a/priv/combined_metrics/dependencies.yml b/priv/combined_metrics/dependencies.yml
index b8edad6..0efbed0 100644
--- a/priv/combined_metrics/dependencies.yml
+++ b/priv/combined_metrics/dependencies.yml
@@ -1,7 +1,7 @@
 import_count_under_10:
   _doc: "Files should import fewer than 10 modules; high import counts signal excessive coupling."
   _languages: [elixir]
-  _log_baseline: 7.1957
+  _log_baseline: 7.0143
   branching:
     mean_branch_count: 0.2110
     mean_branching_density: -1.0683
@@ -100,6 +100,14 @@ import_count_under_10:
     mean_flesch_adapted: -0.0204
     mean_fog_adapted: 0.2028
     mean_total_lines: -0.0265
+  renyi_entropy:
+    mean_hill_1: -0.0153
+    mean_hill_2: -0.0444
+    mean_renyi_0: 0.0026
+    mean_renyi_1: -0.0040
+    mean_renyi_2: -0.0139
+    mean_renyi_inf: 0.0125
+    mean_spectrum_slope: 0.0397
   separator_counts:
     mean_dot_count: -0.1234
     mean_underscore_count: 0.1368
@@ -122,7 +130,7 @@ import_count_under_10:
 low_coupling:
   _doc: "Modules should depend on few external symbols — a low unique-operand count relative to total is a proxy for tight coupling."
   _languages: [elixir]
-  _log_baseline: -45.2561
+  _log_baseline: -45.6308
   branching:
     mean_branch_count: 0.0398
     mean_branching_density: 0.2038
@@ -223,6 +231,13 @@ low_coupling:
     mean_flesch_adapted: 0.0138
     mean_fog_adapted: -0.0557
     mean_total_lines: -0.1476
+  renyi_entropy:
+    mean_hill_1: -0.0660
+    mean_hill_2: -0.0031
+    mean_renyi_0: -0.0276
+    mean_renyi_1: -0.0174
+    mean_renyi_inf: 0.0132
+    mean_spectrum_slope: -0.1079
   separator_counts:
     mean_dot_count: -0.3285
     mean_underscore_count: -0.1206
@@ -245,7 +260,7 @@ low_coupling:
 no_wildcard_imports:
   _doc: "Wildcard imports (`import *`, `using Module`) pollute the local namespace and hide dependencies."
   _languages: [elixir]
-  _log_baseline: -8.8366
+  _log_baseline: -8.7732
   branching:
     mean_branching_density: 0.0249
     mean_non_blank_count: -0.0268
@@ -328,6 +343,11 @@ no_wildcard_imports:
     mean_flesch_adapted: -0.0142
     mean_fog_adapted: 0.0290
     mean_total_lines: -0.0268
+  renyi_entropy:
+    mean_hill_1: 0.0090
+    mean_hill_2: 0.0059
+    mean_renyi_inf: 0.0160
+    mean_spectrum_slope: -0.0086
   separator_counts:
     mean_dot_count: -0.0137
     mean_underscore_count: 0.0302
diff --git a/priv/combined_metrics/documentation.yml b/priv/combined_metrics/documentation.yml
index e089543..2cd15d5 100644
--- a/priv/combined_metrics/documentation.yml
+++ b/priv/combined_metrics/documentation.yml
@@ -1,7 +1,7 @@
 docstring_is_nonempty:
   _doc: "Docstrings must contain meaningful content, not just a placeholder or empty string."
   _languages: [elixir]
-  _log_baseline: 30.1436
+  _log_baseline: 31.4876
   branching:
     mean_branch_count: 0.3089
     mean_branching_density: 0.2652
@@ -97,6 +97,14 @@ docstring_is_nonempty:
     mean_avg_tokens_per_line: 0.0601
     mean_fog_adapted: 0.0452
     mean_total_lines: 0.0437
+  renyi_entropy:
+    mean_hill_1: 0.1612
+    mean_hill_2: 0.1223
+    mean_renyi_0: 0.0400
+    mean_renyi_1: 0.0408
+    mean_renyi_2: 0.0371
+    mean_renyi_inf: 0.0460
+    mean_spectrum_slope: 0.0465
   separator_counts:
     mean_dot_count: 0.1435
     mean_hyphen_count: 0.2418
@@ -122,7 +130,7 @@ docstring_is_nonempty:
 file_has_license_header:
   _doc: "Source files should begin with a license or copyright header."
   _languages: [elixir]
-  _log_baseline: 9.6516
+  _log_baseline: 10.1273
   branching:
     mean_branching_density: -0.0282
     mean_non_blank_count: 0.0295
@@ -201,6 +209,14 @@ file_has_license_header:
   readability:
     mean_avg_tokens_per_line: 0.0407
     mean_fog_adapted: 0.0316
+  renyi_entropy:
+    mean_hill_1: 0.0608
+    mean_hill_2: 0.0383
+    mean_renyi_0: 0.0185
+    mean_renyi_1: 0.0163
+    mean_renyi_2: 0.0119
+    mean_renyi_inf: 0.0086
+    mean_spectrum_slope: 0.0349
   separator_counts:
     mean_dot_count: 0.0772
     mean_hyphen_count: 0.2471
@@ -223,7 +239,7 @@ file_has_license_header:
 file_has_module_docstring:
   _doc: "Files should have a module-level docstring explaining purpose and usage."
   _languages: [elixir]
-  _log_baseline: 24.7485
+  _log_baseline: 26.0789
   branching:
     mean_branch_count: 0.3854
     mean_branching_density: -2.0000
@@ -312,6 +328,14 @@ file_has_module_docstring:
     mean_flesch_adapted: 0.0205
     mean_fog_adapted: -0.0266
     mean_total_lines: 0.0908
+  renyi_entropy:
+    mean_hill_1: 0.1719
+    mean_hill_2: 0.1063
+    mean_renyi_0: 0.0457
+    mean_renyi_1: 0.0441
+    mean_renyi_2: 0.0333
+    mean_renyi_inf: 0.0361
+    mean_spectrum_slope: 0.0692
   separator_counts:
     mean_dot_count: 0.0777
   symbol_density:
@@ -333,7 +357,7 @@ file_has_module_docstring:
 file_has_no_commented_out_code:
   _doc: "Files should not contain commented-out code blocks left from development."
   _languages: [elixir]
-  _log_baseline: -8.5693
+  _log_baseline: -8.6108
   branching:
     mean_branching_density: 0.0368
     mean_non_blank_count: -0.0367
@@ -427,6 +451,11 @@ file_has_no_commented_out_code:
     mean_flesch_adapted: 0.0114
     mean_fog_adapted: -0.0779
     mean_total_lines: 0.0785
+  renyi_entropy:
+    mean_hill_1: -0.0019
+    mean_hill_2: -0.0065
+    mean_renyi_2: -0.0019
+    mean_renyi_inf: -0.0060
   separator_counts:
     mean_dot_count: -0.0411
     mean_hyphen_count: 0.1390
@@ -449,7 +478,7 @@ file_has_no_commented_out_code:
 function_has_docstring:
   _doc: "Public functions should have a docstring describing behaviour, params, and return value."
   _languages: [elixir]
-  _log_baseline: 44.4131
+  _log_baseline: 46.2082
   branching:
     mean_branch_count: 0.5279
     mean_branching_density: 0.3832
@@ -553,6 +582,14 @@ function_has_docstring:
     mean_flesch_adapted: 0.0026
     mean_fog_adapted: 0.0948
     mean_total_lines: 0.1394
+  renyi_entropy:
+    mean_hill_1: 0.2006
+    mean_hill_2: 0.1795
+    mean_renyi_0: 0.0557
+    mean_renyi_1: 0.0517
+    mean_renyi_2: 0.0548
+    mean_renyi_inf: 0.0848
+    mean_spectrum_slope: 0.0580
   separator_counts:
     mean_dot_count: 0.1816
     mean_hyphen_count: 0.2506
@@ -577,7 +614,7 @@ function_has_docstring:
 function_todo_comment_in_body:
   _doc: "Functions should not contain TODO/FIXME comments indicating unfinished work."
   _languages: [elixir]
-  _log_baseline: 8.1611
+  _log_baseline: 8.1682
   branching:
     mean_branch_count: -0.0287
     mean_branching_density: -0.0435
@@ -670,6 +707,11 @@ function_todo_comment_in_body:
     mean_flesch_adapted: -0.0053
     mean_fog_adapted: -0.0109
     mean_total_lines: 0.0381
+  renyi_entropy:
+    mean_hill_2: 0.0042
+    mean_renyi_0: -0.0017
+    mean_renyi_inf: 0.0020
+    mean_spectrum_slope: -0.0082
   separator_counts:
     mean_dot_count: 0.0485
     mean_hyphen_count: 0.0317
diff --git a/priv/combined_metrics/error_handling.yml b/priv/combined_metrics/error_handling.yml
index c7cc58a..159d00f 100644
--- a/priv/combined_metrics/error_handling.yml
+++ b/priv/combined_metrics/error_handling.yml
@@ -1,7 +1,7 @@
 does_not_swallow_errors:
   _doc: "Errors must be handled or re-raised — empty rescue/catch blocks silently hide failures."
   _languages: [elixir]
-  _log_baseline: 91.4421
+  _log_baseline: 92.2460
   branching:
     mean_branch_count: -0.1041
     mean_branching_density: -0.2095
@@ -96,6 +96,14 @@ does_not_swallow_errors:
     mean_flesch_adapted: -0.0373
     mean_fog_adapted: 0.3019
     mean_total_lines: 0.1054
+  renyi_entropy:
+    mean_hill_1: 0.0859
+    mean_hill_2: 0.0348
+    mean_renyi_0: 0.0620
+    mean_renyi_1: 0.0223
+    mean_renyi_2: 0.0102
+    mean_renyi_inf: 0.0553
+    mean_spectrum_slope: 0.2146
   separator_counts:
     mean_dot_count: 0.5172
     mean_hyphen_count: 0.2483
@@ -119,7 +127,7 @@ does_not_swallow_errors:
 error_message_is_descriptive:
   _doc: "Error values should carry a meaningful message, not just a bare atom or empty string."
   _languages: [elixir]
-  _log_baseline: 55.7735
+  _log_baseline: 57.6622
   branching:
     mean_branch_count: 0.0664
     mean_branching_density: -0.0540
@@ -211,6 +219,14 @@ error_message_is_descriptive:
     mean_flesch_adapted: -0.0175
     mean_fog_adapted: 0.1420
     mean_total_lines: 0.1204
+  renyi_entropy:
+    mean_hill_1: 0.2264
+    mean_hill_2: 0.1745
+    mean_renyi_0: 0.0685
+    mean_renyi_1: 0.0596
+    mean_renyi_2: 0.0528
+    mean_renyi_inf: 0.0575
+    mean_spectrum_slope: 0.1093
   separator_counts:
     mean_hyphen_count: 0.2417
     mean_underscore_count: 0.2177
@@ -232,7 +248,7 @@ error_message_is_descriptive:
 returns_typed_error:
   _doc: "Functions should signal failure via a typed return (e.g. `{:error, reason}`) rather than returning `nil` or `false`."
   _languages: [elixir]
-  _log_baseline: 128.7586
+  _log_baseline: 128.1260
   branching:
     mean_branch_count: -0.1286
     mean_branching_density: -0.1895
@@ -333,6 +349,14 @@ returns_typed_error:
     mean_flesch_adapted: -0.1272
     mean_fog_adapted: 0.6637
     mean_total_lines: 0.0608
+  renyi_entropy:
+    mean_hill_1: -0.0427
+    mean_hill_2: -0.1633
+    mean_renyi_0: 0.0531
+    mean_renyi_1: -0.0120
+    mean_renyi_2: -0.0534
+    mean_renyi_inf: -0.1476
+    mean_spectrum_slope: 0.3019
   separator_counts:
     mean_dot_count: 1.1292
     mean_underscore_count: 0.6279
diff --git a/priv/combined_metrics/file_structure.yml b/priv/combined_metrics/file_structure.yml
index 5c5e6ee..07b5e7f 100644
--- a/priv/combined_metrics/file_structure.yml
+++ b/priv/combined_metrics/file_structure.yml
@@ -1,7 +1,7 @@
 has_consistent_indentation:
   _doc: "Files should use a single, consistent indentation style with no mixed tabs and spaces."
   _languages: [elixir]
-  _log_baseline: 19.8257
+  _log_baseline: 20.2575
   branching:
     mean_branch_count: 0.0582
     mean_branching_density: 0.0172
@@ -108,6 +108,14 @@ has_consistent_indentation:
     mean_flesch_adapted: -0.0096
     mean_fog_adapted: 0.0518
     mean_total_lines: 0.0556
+  renyi_entropy:
+    mean_hill_1: 0.0751
+    mean_hill_2: 0.0156
+    mean_renyi_0: 0.0242
+    mean_renyi_1: 0.0153
+    mean_renyi_2: 0.0033
+    mean_renyi_inf: -0.0085
+    mean_spectrum_slope: 0.1012
   separator_counts:
     mean_dot_count: 0.2541
     mean_hyphen_count: -0.0278
@@ -132,7 +140,7 @@ has_consistent_indentation:
 line_count_under_300:
   _doc: "Files should be under 300 lines; longer files typically violate single responsibility."
   _languages: [elixir]
-  _log_baseline: -49.2976
+  _log_baseline: -50.0141
   branching:
     mean_branch_count: -0.4508
     mean_branching_density: -0.2446
@@ -235,6 +243,14 @@ line_count_under_300:
     mean_flesch_adapted: 0.0146
     mean_fog_adapted: 0.0323
     mean_total_lines: -0.2063
+  renyi_entropy:
+    mean_hill_1: -0.0985
+    mean_hill_2: -0.0329
+    mean_renyi_0: -0.0433
+    mean_renyi_1: -0.0264
+    mean_renyi_2: -0.0106
+    mean_renyi_inf: -0.0110
+    mean_spectrum_slope: -0.1050
   separator_counts:
     mean_dot_count: -0.0341
     mean_hyphen_count: -0.2532
@@ -259,7 +275,7 @@ line_count_under_300:
 line_length_under_120:
   _doc: "Lines should be under 120 characters to avoid horizontal scrolling."
   _languages: [elixir]
-  _log_baseline: -17.3646
+  _log_baseline: -17.4278
   branching:
     mean_branching_density: -0.0814
     mean_max_nesting_depth: -0.0341
@@ -358,6 +374,13 @@ line_length_under_120:
     mean_flesch_adapted: 0.0242
     mean_fog_adapted: -0.1420
     mean_total_lines: 0.0811
+  renyi_entropy:
+    mean_hill_1: -0.0095
+    mean_hill_2: 0.0072
+    mean_renyi_0: -0.0107
+    mean_renyi_1: -0.0024
+    mean_renyi_2: 0.0020
+    mean_spectrum_slope: -0.0427
   separator_counts:
     mean_dot_count: -0.0759
     mean_hyphen_count: -0.1626
@@ -380,7 +403,7 @@ line_length_under_120:
 no_magic_numbers:
   _doc: "Numeric literals should be extracted to named constants rather than used inline."
   _languages: [elixir]
-  _log_baseline: 114.2688
+  _log_baseline: 116.5271
   branching:
     mean_branch_count: -0.4352
     mean_branching_density: -0.9103
@@ -473,6 +496,14 @@ no_magic_numbers:
     mean_flesch_adapted: -0.7069
     mean_fog_adapted: 2.0000
     mean_total_lines: 0.4762
+  renyi_entropy:
+    mean_hill_1: 0.3111
+    mean_hill_2: 0.1357
+    mean_renyi_0: 0.0825
+    mean_renyi_1: 0.0769
+    mean_renyi_2: 0.0393
+    mean_renyi_inf: 0.0338
+    mean_spectrum_slope: 0.1938
   separator_counts:
     mean_hyphen_count: -0.8032
     mean_underscore_count: 1.7114
@@ -495,7 +526,7 @@ no_magic_numbers:
 single_responsibility:
   _doc: "Each file should have one primary concern — low complexity spread across few, focused functions."
   _languages: [elixir]
-  _log_baseline: -38.7512
+  _log_baseline: -39.2930
   branching:
     mean_branch_count: -0.0362
     mean_branching_density: 0.1360
@@ -602,6 +633,14 @@ single_responsibility:
     mean_flesch_adapted: 0.0144
     mean_fog_adapted: 0.0083
     mean_total_lines: -0.1645
+  renyi_entropy:
+    mean_hill_1: -0.0617
+    mean_hill_2: -0.0455
+    mean_renyi_0: -0.0255
+    mean_renyi_1: -0.0178
+    mean_renyi_2: -0.0156
+    mean_renyi_inf: -0.0215
+    mean_spectrum_slope: -0.0492
   separator_counts:
     mean_dot_count: -0.1823
     mean_hyphen_count: -0.1254
diff --git a/priv/combined_metrics/function_design.yml b/priv/combined_metrics/function_design.yml
index 6bae7a6..8c8b72d 100644
--- a/priv/combined_metrics/function_design.yml
+++ b/priv/combined_metrics/function_design.yml
@@ -1,7 +1,7 @@
 boolean_function_has_question_mark:
   _doc: "Functions returning a boolean should end with `?` (Elixir/Ruby) or start with `is_`/`has_` (JS/Python)."
   _languages: [elixir, javascript, python, ruby]
-  _log_baseline: -6.6664
+  _log_baseline: -6.6567
   brevity:
     mean_sample_size: 0.0127
   casing_entropy:
@@ -62,6 +62,9 @@ boolean_function_has_question_mark:
     mean_avg_tokens_per_line: 0.0248
     mean_flesch_adapted: 0.0078
     mean_fog_adapted: 0.0564
+  renyi_entropy:
+    mean_renyi_0: 0.0036
+    mean_spectrum_slope: 0.0238
   separator_counts:
     mean_underscore_count: -0.2039
   symbol_density:
@@ -83,7 +86,7 @@ boolean_function_has_question_mark:
 cyclomatic_complexity_under_10:
   _doc: "Functions should have a cyclomatic complexity under 10."
   _languages: [elixir]
-  _log_baseline: 10.5397
+  _log_baseline: 10.2807
   branching:
     mean_branch_count: -0.2801
     mean_branching_density: -0.1604
@@ -183,6 +186,14 @@ cyclomatic_complexity_under_10:
     mean_flesch_adapted: -0.0351
     mean_fog_adapted: 0.1970
     mean_total_lines: -0.1057
+  renyi_entropy:
+    mean_hill_1: -0.0179
+    mean_hill_2: -0.0532
+    mean_renyi_0: 0.0061
+    mean_renyi_1: -0.0049
+    mean_renyi_2: -0.0178
+    mean_renyi_inf: -0.0452
+    mean_spectrum_slope: 0.0735
   separator_counts:
     mean_dot_count: -0.4889
     mean_hyphen_count: -0.2649
@@ -235,7 +246,7 @@ has_verb_in_name:
 is_less_than_20_lines:
   _doc: "Functions should be 20 lines or fewer."
   _languages: [elixir]
-  _log_baseline: 24.9856
+  _log_baseline: 24.6810
   branching:
     mean_branch_count: -0.0820
     mean_branching_density: -0.1010
@@ -333,6 +344,14 @@ is_less_than_20_lines:
     mean_flesch_adapted: -0.0039
     mean_fog_adapted: 0.0868
     mean_total_lines: 0.0188
+  renyi_entropy:
+    mean_hill_1: -0.0163
+    mean_hill_2: -0.0495
+    mean_renyi_0: 0.0035
+    mean_renyi_1: -0.0041
+    mean_renyi_2: -0.0142
+    mean_renyi_inf: -0.0557
+    mean_spectrum_slope: 0.0579
   separator_counts:
     mean_dot_count: 0.0717
     mean_hyphen_count: -0.2249
@@ -358,7 +377,7 @@ is_less_than_20_lines:
 nesting_depth_under_4:
   _doc: "Code should not nest deeper than 4 levels."
   _languages: [elixir]
-  _log_baseline: 4.7425
+  _log_baseline: 4.4553
   branching:
     mean_branch_count: -0.2707
     mean_branching_density: -0.1450
@@ -456,6 +475,14 @@ nesting_depth_under_4:
     mean_flesch_adapted: -0.0299
     mean_fog_adapted: 0.2179
     mean_total_lines: -0.1171
+  renyi_entropy:
+    mean_hill_1: -0.0294
+    mean_hill_2: -0.0502
+    mean_renyi_0: 0.0024
+    mean_renyi_1: -0.0085
+    mean_renyi_2: -0.0151
+    mean_renyi_inf: -0.0060
+    mean_spectrum_slope: 0.0629
   separator_counts:
     mean_dot_count: -0.1825
     mean_hyphen_count: -0.1268
@@ -480,7 +507,7 @@ nesting_depth_under_4:
 no_boolean_parameter:
   _doc: "Functions should not take boolean parameters — a flag usually means the function does two things."
   _languages: [elixir]
-  _log_baseline: 15.2442
+  _log_baseline: 14.9808
   branching:
     mean_branch_count: -2.0000
     mean_branching_density: 1.0271
@@ -581,6 +608,13 @@ no_boolean_parameter:
     mean_flesch_adapted: -0.0254
     mean_fog_adapted: 0.2928
     mean_total_lines: -0.0383
+  renyi_entropy:
+    mean_hill_1: -0.0492
+    mean_hill_2: -0.0213
+    mean_renyi_0: -0.0055
+    mean_renyi_1: -0.0129
+    mean_renyi_2: -0.0065
+    mean_renyi_inf: 0.0307
   separator_counts:
     mean_dot_count: 0.1538
     mean_underscore_count: 0.2112
@@ -602,7 +636,7 @@ no_boolean_parameter:
 no_magic_numbers:
   _doc: "Numeric literals should be named constants, not inline magic numbers."
   _languages: [elixir]
-  _log_baseline: 50.9471
+  _log_baseline: 51.3025
   branching:
     mean_branch_count: -0.2708
     mean_branching_density: -0.1682
@@ -693,6 +727,14 @@ no_magic_numbers:
     mean_flesch_adapted: -0.3819
     mean_fog_adapted: 1.0656
     mean_total_lines: -0.1029
+  renyi_entropy:
+    mean_hill_1: 0.0523
+    mean_hill_2: -0.0197
+    mean_renyi_0: 0.0355
+    mean_renyi_1: 0.0148
+    mean_renyi_2: -0.0065
+    mean_renyi_inf: 0.0597
+    mean_spectrum_slope: 0.1368
   separator_counts:
     mean_hyphen_count: -0.5119
     mean_underscore_count: 1.2283
@@ -716,7 +758,7 @@ no_magic_numbers:
 parameter_count_under_4:
   _doc: "Functions should take fewer than 4 parameters."
   _languages: [elixir]
-  _log_baseline: 2.6289
+  _log_baseline: 3.5772
   branching:
     mean_non_blank_count: 0.0967
   brevity:
@@ -810,6 +852,14 @@ parameter_count_under_4:
     mean_flesch_adapted: 0.0271
     mean_fog_adapted: -0.1290
     mean_total_lines: 0.0967
+  renyi_entropy:
+    mean_hill_1: 0.0728
+    mean_hill_2: 0.1702
+    mean_renyi_0: 0.0063
+    mean_renyi_1: 0.0206
+    mean_renyi_2: 0.0578
+    mean_renyi_inf: 0.1274
+    mean_spectrum_slope: -0.1199
   separator_counts:
     mean_dot_count: 0.9099
     mean_underscore_count: 0.0550
@@ -832,7 +882,7 @@ parameter_count_under_4:
 uses_ternary_expression:
   _doc: "Simple conditional assignments should use inline expressions rather than full if-blocks."
   _excludes_languages: [elixir]
-  _log_baseline: 2.1802
+  _log_baseline: 2.5770
   branching:
     mean_branch_count: -0.6221
     mean_branching_density: -0.4433
@@ -934,6 +984,14 @@ uses_ternary_expression:
     mean_flesch_adapted: -0.0378
     mean_fog_adapted: 0.2053
     mean_total_lines: -0.2483
+  renyi_entropy:
+    mean_hill_1: 0.0464
+    mean_hill_2: 0.0575
+    mean_renyi_0: 0.0029
+    mean_renyi_1: 0.0136
+    mean_renyi_2: 0.0193
+    mean_renyi_inf: 0.0194
+    mean_spectrum_slope: -0.0434
   separator_counts:
     mean_dot_count: -0.4288
     mean_hyphen_count: 0.7222
diff --git a/priv/combined_metrics/naming_conventions.yml b/priv/combined_metrics/naming_conventions.yml
index 0675074..ad1dc57 100644
--- a/priv/combined_metrics/naming_conventions.yml
+++ b/priv/combined_metrics/naming_conventions.yml
@@ -1,7 +1,7 @@
 class_name_is_noun:
   _doc: "Class and module names should be nouns describing what they represent, not verbs or gerunds."
   _languages: [elixir]
-  _log_baseline: 2.5713
+  _log_baseline: 5.3672
   brevity:
     mean_sample_size: 0.7106
   compression:
@@ -46,6 +46,13 @@ class_name_is_noun:
     mean_exclamation_density: -0.3314
   readability:
     mean_avg_line_length: 0.1418
+  renyi_entropy:
+    mean_hill_1: 0.4415
+    mean_hill_2: 0.1396
+    mean_renyi_0: 0.1716
+    mean_renyi_1: 0.1236
+    mean_renyi_2: 0.0441
+    mean_spectrum_slope: 0.5821
   symbol_density:
     mean_density: -0.1381
   vocabulary:
@@ -100,7 +107,7 @@ function_name_is_not_single_word:
 function_name_matches_return_type:
   _doc: "Functions prefixed with `get_`, `fetch_`, or `find_` should return the thing they name."
   _languages: [elixir]
-  _log_baseline: 7.8561
+  _log_baseline: 7.8218
   branching:
     mean_max_nesting_depth: 0.1335
   brevity:
@@ -180,6 +187,13 @@ function_name_matches_return_type:
     mean_avg_tokens_per_line: 0.0030
     mean_flesch_adapted: -0.0107
     mean_fog_adapted: 0.0058
+  renyi_entropy:
+    mean_hill_1: 0.0053
+    mean_hill_2: -0.0190
+    mean_renyi_0: 0.0059
+    mean_renyi_2: -0.0058
+    mean_renyi_inf: -0.0108
+    mean_spectrum_slope: 0.0414
   separator_counts:
     mean_dot_count: 0.1335
     mean_slash_count: 0.2282
@@ -204,7 +218,7 @@ function_name_matches_return_type:
 test_name_starts_with_verb:
   _doc: "Test descriptions should start with a verb: `creates`, `raises`, `returns`, not a noun phrase."
   _languages: [elixir]
-  _log_baseline: 8.0140
+  _log_baseline: 8.8394
   branching:
     mean_branch_count: 1.9977
     mean_branching_density: 2.0000
@@ -270,6 +284,14 @@ test_name_starts_with_verb:
     mean_avg_line_length: 0.0943
     mean_avg_tokens_per_line: 0.0600
     mean_fog_adapted: 0.0600
+  renyi_entropy:
+    mean_hill_1: 0.0982
+    mean_hill_2: 0.0959
+    mean_renyi_0: 0.0155
+    mean_renyi_1: 0.0259
+    mean_renyi_2: 0.0292
+    mean_renyi_inf: 0.0267
+    mean_spectrum_slope: -0.0220
   symbol_density:
     mean_density: -0.0912
   vocabulary:
diff --git a/priv/combined_metrics/scope_and_assignment.yml b/priv/combined_metrics/scope_and_assignment.yml
index 07096ff..11be405 100644
--- a/priv/combined_metrics/scope_and_assignment.yml
+++ b/priv/combined_metrics/scope_and_assignment.yml
@@ -2,7 +2,7 @@ declared_close_to_use:
   _doc: "Variables should be declared near their first use, not hoisted to the top of the function."
   _excludes_block_types: [doc]
   _languages: [elixir, go, javascript, python, ruby]
-  _log_baseline: -36.1172
+  _log_baseline: -37.4837
   branching:
     mean_branch_count: -0.2664
     mean_branching_density: -0.0972
@@ -96,6 +96,14 @@ declared_close_to_use:
     mean_avg_tokens_per_line: -0.0827
     mean_fog_adapted: -0.0557
     mean_total_lines: -0.0874
+  renyi_entropy:
+    mean_hill_1: -0.1497
+    mean_hill_2: -0.1387
+    mean_renyi_0: -0.0328
+    mean_renyi_1: -0.0362
+    mean_renyi_2: -0.0393
+    mean_renyi_inf: -0.0311
+    mean_spectrum_slope: -0.0120
   separator_counts:
     mean_slash_count: -0.9706
     mean_underscore_count: -0.1539
@@ -117,7 +125,7 @@ declared_close_to_use:
 mutated_after_initial_assignment:
   _doc: "Variables should not be reassigned after their initial value — prefer introducing a new name."
   _languages: [elixir]
-  _log_baseline: 6.0053
+  _log_baseline: 6.0995
   branching:
     mean_branch_count: 0.1519
     mean_branching_density: 0.2073
@@ -211,6 +219,12 @@ mutated_after_initial_assignment:
     mean_avg_tokens_per_line: 0.0161
     mean_fog_adapted: 0.0169
     mean_total_lines: -0.0553
+  renyi_entropy:
+    mean_hill_1: 0.0309
+    mean_renyi_0: 0.0015
+    mean_renyi_1: 0.0082
+    mean_renyi_inf: -0.0351
+    mean_spectrum_slope: 0.0044
   separator_counts:
     mean_dot_count: -0.1332
     mean_hyphen_count: 0.3267
@@ -235,7 +249,7 @@ mutated_after_initial_assignment:
 reassigned_multiple_times:
   _doc: "A variable reassigned many times is a sign the name is too generic or the function does too much."
   _languages: [elixir]
-  _log_baseline: -7.2135
+  _log_baseline: -7.1302
   branching:
     mean_max_nesting_depth: 0.0680
     mean_non_blank_count: 0.0226
@@ -336,6 +350,14 @@ reassigned_multiple_times:
     mean_flesch_adapted: -0.0030
     mean_fog_adapted: -0.1102
     mean_total_lines: 0.0226
+  renyi_entropy:
+    mean_hill_1: 0.0390
+    mean_hill_2: -0.0240
+    mean_renyi_0: 0.0072
+    mean_renyi_1: 0.0105
+    mean_renyi_2: -0.0073
+    mean_renyi_inf: -0.0310
+    mean_spectrum_slope: 0.0355
   separator_counts:
     mean_dot_count: -0.1300
     mean_hyphen_count: 0.2586
@@ -361,7 +383,7 @@ reassigned_multiple_times:
 scope_is_minimal:
   _doc: "Variables should be scoped as narrowly as possible — not declared at a wider scope than needed."
   _languages: [elixir]
-  _log_baseline: -7.8917
+  _log_baseline: -7.4444
   branching:
     mean_branch_count: -0.1072
     mean_branching_density: -0.0452
@@ -455,6 +477,14 @@ scope_is_minimal:
     mean_flesch_adapted: 0.0319
     mean_fog_adapted: 0.0564
     mean_total_lines: -0.0420
+  renyi_entropy:
+    mean_hill_1: 0.0142
+    mean_hill_2: 0.1024
+    mean_renyi_0: -0.0081
+    mean_renyi_1: 0.0037
+    mean_renyi_2: 0.0320
+    mean_renyi_inf: 0.0853
+    mean_spectrum_slope: -0.1027
   separator_counts:
     mean_dot_count: 0.3290
     mean_underscore_count: -0.1941
@@ -476,7 +506,7 @@ scope_is_minimal:
 shadowed_by_inner_scope:
   _doc: "Inner-scope names that shadow outer-scope names cause confusion about which value is in play."
   _languages: [elixir]
-  _log_baseline: -32.8272
+  _log_baseline: -33.4708
   branching:
     mean_branching_density: 2.0000
     mean_max_nesting_depth: -0.1450
@@ -565,6 +595,14 @@ shadowed_by_inner_scope:
     mean_flesch_adapted: -0.0728
     mean_fog_adapted: -0.1060
     mean_total_lines: -0.0480
+  renyi_entropy:
+    mean_hill_1: -0.0573
+    mean_hill_2: -0.0750
+    mean_renyi_0: -0.0178
+    mean_renyi_1: -0.0147
+    mean_renyi_2: -0.0218
+    mean_renyi_inf: -0.0517
+    mean_spectrum_slope: -0.0037
   separator_counts:
     mean_dot_count: -0.0206
     mean_underscore_count: 0.6826
@@ -588,7 +626,7 @@ shadowed_by_inner_scope:
 used_only_once:
   _doc: "A variable used only once is a candidate for inlining — it rarely adds clarity over a direct expression."
   _languages: [elixir, go, javascript, python, ruby]
-  _log_baseline: -38.0360
+  _log_baseline: -39.0085
   branching:
     mean_branch_count: -0.2490
     mean_branching_density: -0.4526
@@ -682,6 +720,14 @@ used_only_once:
     mean_avg_tokens_per_line: -0.0534
     mean_fog_adapted: 0.0120
     mean_total_lines: -0.1653
+  renyi_entropy:
+    mean_hill_1: -0.1214
+    mean_hill_2: -0.0881
+    mean_renyi_0: -0.0279
+    mean_renyi_1: -0.0310
+    mean_renyi_2: -0.0262
+    mean_renyi_inf: -0.0226
+    mean_spectrum_slope: -0.0323
   separator_counts:
     mean_hyphen_count: 0.3212
     mean_underscore_count: -0.1733
diff --git a/priv/combined_metrics/testing.yml b/priv/combined_metrics/testing.yml
index e9dbf69..3069f6c 100644
--- a/priv/combined_metrics/testing.yml
+++ b/priv/combined_metrics/testing.yml
@@ -1,7 +1,7 @@
 reasonable_test_to_code_ratio:
   _doc: "There should be an adequate number of test cases relative to the code being tested."
   _languages: [elixir]
-  _log_baseline: 13.2191
+  _log_baseline: 13.4831
   branching:
     mean_branch_count: 0.1869
     mean_branching_density: 0.0352
@@ -102,6 +102,14 @@ reasonable_test_to_code_ratio:
     mean_flesch_adapted: 0.0106
     mean_fog_adapted: -0.0829
     mean_total_lines: 0.1973
+  renyi_entropy:
+    mean_hill_1: 0.0127
+    mean_hill_2: 0.0459
+    mean_renyi_0: 0.0063
+    mean_renyi_1: 0.0033
+    mean_renyi_2: 0.0139
+    mean_renyi_inf: 0.0256
+    mean_spectrum_slope: -0.0128
   separator_counts:
     mean_dot_count: 0.2776
     mean_hyphen_count: 0.2470
@@ -126,7 +134,7 @@ reasonable_test_to_code_ratio:
 test_has_assertion:
   _doc: "Every test body must contain at least one assertion — a test without assertions proves nothing."
   _languages: [elixir]
-  _log_baseline: -10.1327
+  _log_baseline: -10.4803
   branching:
     mean_branch_count: 0.0918
     mean_branching_density: 0.1642
@@ -219,6 +227,14 @@ test_has_assertion:
     mean_flesch_adapted: -0.0065
     mean_fog_adapted: 0.0284
     mean_total_lines: -0.0284
+  renyi_entropy:
+    mean_hill_1: -0.0479
+    mean_hill_2: -0.0243
+    mean_renyi_0: -0.0118
+    mean_renyi_1: -0.0124
+    mean_renyi_2: -0.0073
+    mean_renyi_inf: -0.0081
+    mean_spectrum_slope: -0.0228
   separator_counts:
     mean_dot_count: 0.0108
     mean_hyphen_count: -0.1294
@@ -243,7 +259,7 @@ test_has_assertion:
 test_name_describes_behavior:
   _doc: "Test names should describe the expected behaviour, not just the method under test."
   _languages: [elixir]
-  _log_baseline: 60.4069
+  _log_baseline: 61.6996
   branching:
     mean_branch_count: 2.0000
     mean_branching_density: -1.5965
@@ -326,6 +342,14 @@ test_name_describes_behavior:
     mean_avg_line_length: 0.1184
     mean_avg_tokens_per_line: 0.0316
     mean_total_lines: 0.2388
+  renyi_entropy:
+    mean_hill_1: 0.1588
+    mean_hill_2: 0.1383
+    mean_renyi_0: 0.0420
+    mean_renyi_1: 0.0449
+    mean_renyi_2: 0.0459
+    mean_renyi_inf: 0.0732
+    mean_spectrum_slope: 0.0331
   separator_counts:
     mean_dot_count: 0.0701
     mean_slash_count: 1.2619
@@ -349,7 +373,7 @@ test_name_describes_behavior:
 test_single_concept:
   _doc: "Each test should verify a single concept — tests covering multiple things are harder to diagnose when they fail."
   _languages: [elixir]
-  _log_baseline: 40.5455
+  _log_baseline: 40.8775
   branching:
     mean_branch_count: 0.3696
     mean_branching_density: -2.0000
@@ -451,6 +475,14 @@ test_single_concept:
     mean_flesch_adapted: 0.0098
     mean_fog_adapted: -0.1758
     mean_total_lines: 0.3391
+  renyi_entropy:
+    mean_hill_1: 0.0253
+    mean_hill_2: 0.0418
+    mean_renyi_0: 0.0104
+    mean_renyi_1: 0.0065
+    mean_renyi_2: 0.0124
+    mean_renyi_inf: 0.0303
+    mean_spectrum_slope: 0.0055
   separator_counts:
     mean_dot_count: 0.0317
     mean_slash_count: 0.9554
diff --git a/priv/combined_metrics/type_and_value.yml b/priv/combined_metrics/type_and_value.yml
index a54b6e6..04a59b8 100644
--- a/priv/combined_metrics/type_and_value.yml
+++ b/priv/combined_metrics/type_and_value.yml
@@ -1,7 +1,7 @@
 boolean_assigned_from_comparison:
   _doc: "Boolean variables should be assigned directly from comparisons or predicate calls, not set via conditionals."
   _languages: [elixir]
-  _log_baseline: -6.7740
+  _log_baseline: -6.7155
   branching:
     mean_branch_count: -1.5392
     mean_branching_density: 0.7530
@@ -110,6 +110,14 @@ boolean_assigned_from_comparison:
     mean_flesch_adapted: -0.0996
     mean_fog_adapted: 0.2876
     mean_total_lines: -0.3476
+  renyi_entropy:
+    mean_hill_1: 0.0679
+    mean_hill_2: -0.0493
+    mean_renyi_0: 0.0284
+    mean_renyi_1: 0.0172
+    mean_renyi_2: -0.0152
+    mean_renyi_inf: -0.1010
+    mean_spectrum_slope: 0.2045
   separator_counts:
     mean_dot_count: 0.3307
     mean_hyphen_count: -2.0000
@@ -135,7 +143,7 @@ boolean_assigned_from_comparison:
 hardcoded_url_or_path:
   _doc: "URLs, file paths, and host names should be configuration values, not inline string literals."
   _languages: [elixir]
-  _log_baseline: 58.7858
+  _log_baseline: 60.1101
   branching:
     mean_max_nesting_depth: 0.4526
   brevity:
@@ -226,6 +234,14 @@ hardcoded_url_or_path:
     mean_avg_tokens_per_line: 0.2263
     mean_flesch_adapted: -0.2352
     mean_fog_adapted: 0.4805
+  renyi_entropy:
+    mean_hill_1: 0.1232
+    mean_hill_2: 0.1193
+    mean_renyi_0: 0.0321
+    mean_renyi_1: 0.0319
+    mean_renyi_2: 0.0359
+    mean_renyi_inf: 0.2124
+    mean_spectrum_slope: 0.0223
   separator_counts:
     mean_dot_count: 0.0519
     mean_slash_count: -0.5872
@@ -248,7 +264,7 @@ hardcoded_url_or_path:
 no_empty_string_initial:
   _doc: "Initialising a variable to an empty string and reassigning later signals missing structure."
   _languages: [elixir]
-  _log_baseline: -5.7200
+  _log_baseline: -4.9000
   branching:
     mean_branch_count: -0.1509
     mean_branching_density: -0.0146
@@ -349,6 +365,14 @@ no_empty_string_initial:
     mean_flesch_adapted: 0.0051
     mean_fog_adapted: 0.0674
     mean_total_lines: -0.0973
+  renyi_entropy:
+    mean_hill_1: 0.0708
+    mean_hill_2: 0.1388
+    mean_renyi_0: 0.0055
+    mean_renyi_1: 0.0194
+    mean_renyi_2: 0.0457
+    mean_renyi_inf: 0.0794
+    mean_spectrum_slope: -0.0876
   separator_counts:
     mean_dot_count: 0.0512
     mean_hyphen_count: 0.1377
@@ -374,7 +398,7 @@ no_empty_string_initial:
 no_implicit_null_initial:
   _doc: "Initialising a variable to `nil`/`null` and assigning it later in a branch signals missing structure."
   _languages: [elixir]
-  _log_baseline: -13.1244
+  _log_baseline: -12.9700
   branching:
     mean_branch_count: -0.1283
     mean_branching_density: -0.0936
@@ -480,6 +504,14 @@ no_implicit_null_initial:
     mean_flesch_adapted: -0.0097
     mean_fog_adapted: 0.0725
     mean_total_lines: -0.0648
+  renyi_entropy:
+    mean_hill_1: 0.0195
+    mean_hill_2: 0.0122
+    mean_renyi_0: 0.0056
+    mean_renyi_1: 0.0056
+    mean_renyi_2: 0.0038
+    mean_renyi_inf: 0.0103
+    mean_spectrum_slope: 0.0115
   separator_counts:
     mean_dot_count: -0.0539
     mean_hyphen_count: 0.7825
@@ -505,7 +537,7 @@ no_implicit_null_initial:
 no_magic_value_assigned:
   _doc: "Literal strings and numbers assigned to variables should be named constants, not inline values."
   _languages: [elixir]
-  _log_baseline: -12.8678
+  _log_baseline: -9.2288
   branching:
     mean_branch_count: -0.2035
     mean_branching_density: -0.1140
@@ -598,6 +630,13 @@ no_magic_value_assigned:
     mean_flesch_adapted: 0.2297
     mean_fog_adapted: -0.5835
     mean_total_lines: -0.0893
+  renyi_entropy:
+    mean_hill_1: 0.3084
+    mean_hill_2: 0.7145
+    mean_renyi_1: 0.0837
+    mean_renyi_2: 0.2504
+    mean_renyi_inf: 0.3898
+    mean_spectrum_slope: -0.4463
   separator_counts:
     mean_hyphen_count: -0.5246
     mean_underscore_count: -0.4596
diff --git a/priv/combined_metrics/variable_naming.yml b/priv/combined_metrics/variable_naming.yml
index 5dd02ec..3e8fc11 100644
--- a/priv/combined_metrics/variable_naming.yml
+++ b/priv/combined_metrics/variable_naming.yml
@@ -1,7 +1,7 @@
 boolean_has_is_has_prefix:
   _doc: "Boolean variables should be prefixed with `is_`, `has_`, or `can_`."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 22.3422
+  _log_baseline: 22.7733
   brevity:
     mean_sample_size: 0.0752
   casing_entropy:
@@ -51,6 +51,12 @@ boolean_has_is_has_prefix:
     mean_avg_sub_words_per_id: 0.3932
     mean_flesch_adapted: -0.4857
     mean_fog_adapted: 0.5482
+  renyi_entropy:
+    mean_hill_1: 0.0715
+    mean_hill_2: 0.0280
+    mean_renyi_0: 0.0173
+    mean_renyi_1: 0.0198
+    mean_spectrum_slope: 0.0370
   separator_counts:
     mean_underscore_count: 1.8116
   symbol_density:
@@ -69,7 +75,7 @@ boolean_has_is_has_prefix:
 collection_name_is_plural:
   _doc: "Variables holding a collection should use a plural name."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 24.4551
+  _log_baseline: 21.8672
   brevity:
     mean_sample_size: -0.5320
   casing_entropy:
@@ -117,6 +123,13 @@ collection_name_is_plural:
     mean_avg_sub_words_per_id: 0.1285
     mean_flesch_adapted: -0.1311
     mean_fog_adapted: 0.8035
+  renyi_entropy:
+    mean_hill_1: -0.3788
+    mean_hill_2: -0.1735
+    mean_renyi_0: -0.1242
+    mean_renyi_1: -0.1027
+    mean_renyi_2: -0.0525
+    mean_spectrum_slope: -0.3391
   separator_counts:
     mean_underscore_count: 0.6811
   symbol_density:
@@ -137,7 +150,7 @@ loop_var_is_single_letter:
   _doc: "Loop index variables (`i`, `j`, `k`) are acceptable inside loop bodies."
   _excludes_block_types: [doc]
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -32.8855
+  _log_baseline: -33.3401
   brevity:
     mean_sample_size: -0.1049
   casing_entropy:
@@ -202,6 +215,13 @@ loop_var_is_single_letter:
     mean_avg_tokens_per_line: 0.0100
     mean_flesch_adapted: 0.4102
     mean_fog_adapted: -1.3612
+  renyi_entropy:
+    mean_hill_1: -0.0644
+    mean_hill_2: -0.0329
+    mean_renyi_0: -0.0244
+    mean_renyi_1: -0.0181
+    mean_renyi_2: -0.0096
+    mean_spectrum_slope: -0.0606
   separator_counts:
     mean_hyphen_count: 0.1363
     mean_underscore_count: -1.4177
@@ -223,7 +243,7 @@ loop_var_is_single_letter:
 name_contains_and:
   _doc: "Variable names containing `and` signal a variable that holds two concerns."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -2.5335
+  _log_baseline: -2.6591
   branching:
     mean_branch_count: -0.3666
     mean_branching_density: -0.3925
@@ -327,6 +347,12 @@ name_contains_and:
     mean_flesch_adapted: 0.3817
     mean_fog_adapted: -0.9412
     mean_total_lines: 0.0244
+  renyi_entropy:
+    mean_hill_1: -0.0168
+    mean_hill_2: -0.0262
+    mean_renyi_2: -0.0083
+    mean_renyi_inf: 0.0174
+    mean_spectrum_slope: 0.0252
   separator_counts:
     mean_dot_count: -0.2504
     mean_underscore_count: -0.6180
@@ -349,7 +375,7 @@ name_contains_and:
 name_contains_type_suffix:
   _doc: "Type suffixes in names (`userString`, `nameList`) are redundant noise."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -27.7647
+  _log_baseline: -28.3725
   branching:
     mean_branch_count: -0.6581
     mean_branching_density: -0.8807
@@ -420,6 +446,13 @@ name_contains_type_suffix:
     mean_avg_tokens_per_line: -0.0091
     mean_flesch_adapted: 0.3824
     mean_fog_adapted: -0.7531
+  renyi_entropy:
+    mean_hill_1: -0.0997
+    mean_hill_2: -0.0129
+    mean_renyi_0: -0.0351
+    mean_renyi_1: -0.0241
+    mean_renyi_inf: 0.0172
+    mean_spectrum_slope: -0.1195
   separator_counts:
     mean_underscore_count: -2.0000
   symbol_density:
@@ -440,7 +473,7 @@ name_contains_type_suffix:
 name_is_abbreviation:
   _doc: "Abbreviated names (`usr`, `cfg`, `mgr`) reduce readability."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 21.8261
+  _log_baseline: 21.9968
   brevity:
     mean_sample_size: -0.0441
   casing_entropy:
@@ -510,6 +543,10 @@ name_is_abbreviation:
     mean_avg_tokens_per_line: -0.0896
     mean_flesch_adapted: -0.0479
     mean_fog_adapted: -0.0830
+  renyi_entropy:
+    mean_hill_2: 0.0338
+    mean_renyi_inf: 0.0724
+    mean_spectrum_slope: -0.0538
   separator_counts:
     mean_dot_count: -0.0928
     mean_slash_count: -0.5019
@@ -532,7 +569,7 @@ name_is_abbreviation:
 name_is_generic:
   _doc: "Generic names (`data`, `result`, `tmp`, `val`, `obj`) convey no domain meaning."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 44.0574
+  _log_baseline: 44.9220
   branching:
     mean_branch_count: 0.5193
     mean_branching_density: 0.3889
@@ -633,6 +670,14 @@ name_is_generic:
     mean_flesch_adapted: -0.2843
     mean_fog_adapted: 0.5030
     mean_total_lines: 0.0756
+  renyi_entropy:
+    mean_hill_1: 0.1404
+    mean_hill_2: 0.0289
+    mean_renyi_0: 0.0450
+    mean_renyi_1: 0.0371
+    mean_renyi_2: 0.0086
+    mean_renyi_inf: -0.0049
+    mean_spectrum_slope: 0.1444
   separator_counts:
     mean_slash_count: 0.9542
     mean_underscore_count: 1.9344
@@ -656,7 +701,7 @@ name_is_generic:
 name_is_number_like:
   _doc: "Number-suffixed names (`var1`, `thing2`) signal a missing abstraction."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 4.1421
+  _log_baseline: 3.9691
   brevity:
     mean_sample_size: -0.0262
   casing_entropy:
@@ -721,6 +766,14 @@ name_is_number_like:
     mean_avg_tokens_per_line: -0.0075
     mean_flesch_adapted: -0.1154
     mean_fog_adapted: 0.0448
+  renyi_entropy:
+    mean_hill_1: -0.0227
+    mean_hill_2: -0.0138
+    mean_renyi_0: -0.0054
+    mean_renyi_1: -0.0056
+    mean_renyi_2: -0.0042
+    mean_renyi_inf: -0.0034
+    mean_spectrum_slope: -0.0079
   separator_counts:
     mean_hyphen_count: -0.5988
     mean_underscore_count: 0.6819
@@ -742,7 +795,7 @@ name_is_number_like:
 name_is_single_letter:
   _doc: "Single-letter names outside loop indices are too opaque."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: 30.3914
+  _log_baseline: 32.2399
   branching:
     mean_branching_density: -0.0445
     mean_non_blank_count: 0.0426
@@ -825,6 +878,14 @@ name_is_single_letter:
     mean_flesch_adapted: -0.2349
     mean_fog_adapted: -0.0666
     mean_total_lines: 0.0431
+  renyi_entropy:
+    mean_hill_1: 0.3014
+    mean_hill_2: 0.1225
+    mean_renyi_0: 0.0529
+    mean_renyi_1: 0.0808
+    mean_renyi_2: 0.0370
+    mean_renyi_inf: -0.0126
+    mean_spectrum_slope: 0.0926
   separator_counts:
     mean_hyphen_count: -0.1345
     mean_underscore_count: 2.0000
@@ -847,7 +908,7 @@ name_is_single_letter:
 name_is_too_long:
   _doc: "Names longer than ~30 characters harm readability."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -9.9643
+  _log_baseline: -10.2893
   branching:
     mean_branch_count: 0.0340
     mean_branching_density: 0.0916
@@ -953,6 +1014,14 @@ name_is_too_long:
     mean_flesch_adapted: 2.0000
     mean_fog_adapted: -0.3969
     mean_total_lines: -0.0733
+  renyi_entropy:
+    mean_hill_1: -0.0445
+    mean_hill_2: -0.0319
+    mean_renyi_0: -0.0038
+    mean_renyi_1: -0.0111
+    mean_renyi_2: -0.0089
+    mean_renyi_inf: -0.0064
+    mean_spectrum_slope: 0.0100
   separator_counts:
     mean_dot_count: 0.0613
     mean_hyphen_count: 0.1862
@@ -977,7 +1046,7 @@ name_is_too_long:
 name_is_too_short:
   _doc: "Names shorter than 3 characters (outside loops) are too opaque."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -3.7450
+  _log_baseline: -5.0614
   branching:
     mean_branch_count: -0.2327
     mean_branching_density: -0.2381
@@ -1050,6 +1119,13 @@ name_is_too_short:
     mean_avg_line_length: 0.2778
     mean_avg_tokens_per_line: -0.0329
     mean_fog_adapted: -0.0263
+  renyi_entropy:
+    mean_hill_1: -0.1805
+    mean_hill_2: -0.1245
+    mean_renyi_0: -0.0267
+    mean_renyi_1: -0.0467
+    mean_renyi_2: -0.0364
+    mean_renyi_inf: -0.0138
   separator_counts:
     mean_hyphen_count: -0.5797
     mean_underscore_count: -0.1641
@@ -1072,7 +1148,7 @@ name_is_too_short:
 negated_boolean_name:
   _doc: "Negated boolean names (`isNotValid`, `notActive`) are harder to reason about."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -13.6544
+  _log_baseline: -14.0280
   brevity:
     mean_sample_size: -0.0991
   casing_entropy:
@@ -1139,6 +1215,13 @@ negated_boolean_name:
     mean_avg_tokens_per_line: -0.0494
     mean_flesch_adapted: 0.2268
     mean_fog_adapted: -0.7244
+  renyi_entropy:
+    mean_hill_1: -0.0618
+    mean_hill_2: -0.0191
+    mean_renyi_0: -0.0208
+    mean_renyi_1: -0.0164
+    mean_renyi_inf: 0.0362
+    mean_spectrum_slope: -0.0621
   separator_counts:
     mean_underscore_count: -0.6273
   symbol_density:
@@ -1159,7 +1242,7 @@ negated_boolean_name:
 no_hungarian_notation:
   _doc: "Hungarian notation prefixes (`strName`, `bFlag`) add noise without type safety."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -8.5442
+  _log_baseline: -8.4145
   brevity:
     mean_sample_size: -0.0295
   casing_entropy:
@@ -1233,6 +1316,12 @@ no_hungarian_notation:
     mean_avg_tokens_per_line: 0.0141
     mean_flesch_adapted: 0.4848
     mean_fog_adapted: -0.5445
+  renyi_entropy:
+    mean_hill_1: -0.0128
+    mean_hill_2: 0.0439
+    mean_renyi_2: 0.0175
+    mean_renyi_inf: 0.0376
+    mean_spectrum_slope: -0.0564
   separator_counts:
     mean_dot_count: 0.0112
     mean_underscore_count: -1.6136
@@ -1255,7 +1344,7 @@ no_hungarian_notation:
 screaming_snake_for_constants:
   _doc: "Module-level constants should use SCREAMING_SNAKE_CASE."
   _languages: [elixir, javascript, ruby]
-  _log_baseline: -4.5280
+  _log_baseline: -4.5910
   branching:
     mean_branching_density: 0.0176
     mean_non_blank_count: -0.0180
@@ -1330,6 +1419,10 @@ screaming_snake_for_constants:
     mean_flesch_adapted: 0.0095
     mean_fog_adapted: -0.0082
     mean_total_lines: -0.0182
+  renyi_entropy:
+    mean_hill_1: -0.0110
+    mean_hill_2: -0.0036
+    mean_spectrum_slope: -0.0072
   separator_counts:
     mean_underscore_count: 0.3971
   symbol_density: