{
  "dataset": "WikiText-2",
  "seed": 42,
  "device": "mps",
  "generations": 4,
  "population": 4,
  "steps_per_trial": 20,
  "direction": "组合 Native Sparse Attention、Gated Attention 和 Muon，继续搜索数据配方、后训练与训练超参数",
  "generation_1": {
    "baseline": {"architecture": "gpt_baseline", "fitness": -6.9470, "perplexity": 418.202},
    "native_sparse_attention": {"fitness": -6.9554, "perplexity": 420.529},
    "muon": {"fitness": -6.9966, "perplexity": 437.028},
    "nsa_gated_attention": {"fitness": -7.0230, "perplexity": 445.960},
    "gated_attention": {"fitness": -7.0277, "perplexity": 448.473}
  },
  "champion": {
    "trial": "g4-t2",
    "architecture": "gpt_baseline",
    "post_training": "sft",
    "dimensions": 256,
    "validation_perplexity": 256.5813,
    "test_perplexity": 251.041,
    "validation_fitness": -6.384150
  },
  "baseline_test_perplexity": 411.372,
  "test_perplexity_change_percent": -38.97,
  "scope": "single-seed small-model diagnostic; test was isolated from evolution selection"
}