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DATASET PRE-ANALYSIS (12000 CVEs)
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## Overall
Total CVEs: 12000
CVSS version: {'3.1': 10570, '3.0': 1430}
v3.1 proportion: 88.1%
CWE coverage: 8943/12000 (75%)
Unique CWEs: 461

## Per-Band Breakdown
Band        Count  Unique         Top1  Top1%  v3.1%  MeanLen
Low          3000      24          2.4    17%    90%     404
Medium       3000      30          5.5     9%    90%     366
High         3000      20          8.6     6%    87%     375
Critical     3000      10          9.9    14%    86%     360

## Boundary Density
  ±0.5 of 4.0:   898 (7.5%)  below=635 above=263
  ±0.5 of 7.0:  1227 (10.2%)  below=217 above=1010
  ±0.5 of 9.0:  1957 (16.3%)  below=653 above=1304

## Description Length (chars)
  Min: 57  Mean: 376  Median: 298  Max: 3998
  Low       : mean=404  median=370
  Medium    : mean=366  median=282
  High      : mean=375  median=293
  Critical  : mean=360  median=274

## Top 5 CWEs per Band
  Low       : CWE-79(586), CWE-200(119), CWE-125(112), CWE-284(61), CWE-20(56)
  Medium    : CWE-79(449), CWE-862(104), CWE-20(87), CWE-200(86), CWE-89(77)
  High      : CWE-89(273), CWE-79(256), CWE-20(99), CWE-22(90), CWE-121(71)
  Critical  : CWE-89(280), CWE-434(196), CWE-79(131), CWE-78(109), CWE-94(95)

## CVE Year Distribution
  1999-2003:      4
  2004-2008:      5
  2009-2013:     26
  2014-2018:    415
  2019-2023:   5386
  2024-2028:   6164

## Clustering Analysis
  Low       : 24 unique scores, evenness=0.87 (1.0=perfectly even)
  Medium    : 30 unique scores, evenness=0.90 (1.0=perfectly even)
  High      : 20 unique scores, evenness=0.98 (1.0=perfectly even)
  Critical  : 10 unique scores, evenness=0.92 (1.0=perfectly even)

## Quality Flags
  No quality warnings.