| { |
| "method": "logistic regression on pairwise feature differences", |
| "training_set_size": 1717, |
| "feature_names": [ |
| "word_count", |
| "char_count", |
| "ttr", |
| "sentence_count", |
| "avg_sentence_len", |
| "dialogue_ratio", |
| "action_ratio", |
| "exclamation_per_1k", |
| "ellipsis_per_1k", |
| "comma_per_1k", |
| "avg_word_len", |
| "bigram_repetition" |
| ], |
| "cv_accuracy": { |
| "mean": 0.5387, |
| "std": 0.0201 |
| }, |
| "feature_coefficients": { |
| "word_count": 0.038616634397416805, |
| "char_count": 0.03864279473772371, |
| "ttr": -0.01914308086445501, |
| "sentence_count": 0.028155957104233048, |
| "avg_sentence_len": -0.0036095904495603687, |
| "dialogue_ratio": 0.0437777895165803, |
| "action_ratio": -0.006029425140718956, |
| "exclamation_per_1k": 0.006058409728573959, |
| "ellipsis_per_1k": -0.01170504339618912, |
| "comma_per_1k": -0.0025946344729306414, |
| "avg_word_len": 0.004955500028980793, |
| "bigram_repetition": 0.017184690623146537 |
| }, |
| "intercept": -0.06435372402856071, |
| "validation_against_human_arena": { |
| "n_models_overlap": 11, |
| "rho_vs_human_arena_elo": 0.5545, |
| "p_value": 0.0767, |
| "interpretation": "moderate proxy" |
| }, |
| "per_model": { |
| "mistral_small_creative": { |
| "engagement_skill_mean": 0.0064, |
| "engagement_skill_std": 0.0943, |
| "n_scored": 27 |
| }, |
| "deepseek_r1_0528": { |
| "engagement_skill_mean": -0.0108, |
| "engagement_skill_std": 0.1449, |
| "n_scored": 27 |
| }, |
| "claude_opus_4_6": { |
| "engagement_skill_mean": -0.0265, |
| "engagement_skill_std": 0.1829, |
| "n_scored": 27 |
| }, |
| "gemini_3_1_pro": { |
| "engagement_skill_mean": -0.0289, |
| "engagement_skill_std": 0.1024, |
| "n_scored": 25 |
| }, |
| "claude_opus_4_7": { |
| "engagement_skill_mean": -0.0296, |
| "engagement_skill_std": 0.1154, |
| "n_scored": 27 |
| }, |
| "gemma_4_26b": { |
| "engagement_skill_mean": -0.031, |
| "engagement_skill_std": 0.1359, |
| "n_scored": 27 |
| }, |
| "qwen3_5_flash": { |
| "engagement_skill_mean": -0.0343, |
| "engagement_skill_std": 0.0904, |
| "n_scored": 25 |
| }, |
| "glm_4_7": { |
| "engagement_skill_mean": -0.0544, |
| "engagement_skill_std": 0.0937, |
| "n_scored": 27 |
| }, |
| "claude_sonnet_4_5": { |
| "engagement_skill_mean": -0.0623, |
| "engagement_skill_std": 0.1219, |
| "n_scored": 27 |
| }, |
| "gemini_3_1_flash_lite": { |
| "engagement_skill_mean": -0.0647, |
| "engagement_skill_std": 0.0652, |
| "n_scored": 27 |
| }, |
| "kimi_k2_5": { |
| "engagement_skill_mean": -0.0757, |
| "engagement_skill_std": 0.0769, |
| "n_scored": 27 |
| }, |
| "deepseek_v3_2": { |
| "engagement_skill_mean": -0.0804, |
| "engagement_skill_std": 0.1485, |
| "n_scored": 27 |
| }, |
| "gemini_2_5_flash": { |
| "engagement_skill_mean": -0.0812, |
| "engagement_skill_std": 0.0873, |
| "n_scored": 27 |
| }, |
| "kimi_k2_6": { |
| "engagement_skill_mean": -0.0872, |
| "engagement_skill_std": 0.0898, |
| "n_scored": 23 |
| }, |
| "deepseek_v4_pro": { |
| "engagement_skill_mean": -0.0949, |
| "engagement_skill_std": 0.106, |
| "n_scored": 27 |
| }, |
| "minimax_m2_7": { |
| "engagement_skill_mean": -0.0994, |
| "engagement_skill_std": 0.1583, |
| "n_scored": 27 |
| }, |
| "grok_4_1": { |
| "engagement_skill_mean": -0.1055, |
| "engagement_skill_std": 0.1303, |
| "n_scored": 27 |
| }, |
| "llama_4_maverick": { |
| "engagement_skill_mean": -0.1059, |
| "engagement_skill_std": 0.0723, |
| "n_scored": 27 |
| }, |
| "glm_5_1": { |
| "engagement_skill_mean": -0.1159, |
| "engagement_skill_std": 0.1023, |
| "n_scored": 26 |
| }, |
| "deepseek_v4_flash": { |
| "engagement_skill_mean": -0.1186, |
| "engagement_skill_std": 0.0867, |
| "n_scored": 27 |
| }, |
| "gpt_4_1": { |
| "engagement_skill_mean": -0.1388, |
| "engagement_skill_std": 0.0625, |
| "n_scored": 27 |
| } |
| } |
| } |
