data/experiments/mixed_effects_analysis.json

{
  "description": "Mixed-effects, block bootstrap, and LOO analysis of BCCT vision atlas",
  "source": "data/atlas.json",
  "n_pairs": 190,
  "n_models": 20,
  "mixed_effects": {
    "formula": "tau ~ delta + same_obj + same_fam + (1|model_node)",
    "n_obs": 190,
    "n_obs_duplicated": 380,
    "n_groups": 20,
    "aic": -505.12,
    "bic": -481.48,
    "log_likelihood": 258.56,
    "fixed_effects": {
      "intercept": {
        "coef": 0.1461,
        "std_err": 0.0138,
        "z": 10.577,
        "p_value": 3.8e-26,
        "ci_95": [
          0.119,
          0.1731
        ]
      },
      "delta": {
        "coef": -0.0337,
        "std_err": 0.0044,
        "z": -7.724,
        "p_value": 1.13e-14,
        "ci_95": [
          -0.0422,
          -0.0251
        ]
      },
      "same_obj": {
        "coef": 0.0424,
        "std_err": 0.0186,
        "z": 2.279,
        "p_value": 0.0227,
        "ci_95": [
          0.0059,
          0.0788
        ]
      },
      "same_fam": {
        "coef": 0.2013,
        "std_err": 0.0237,
        "z": 8.483,
        "p_value": 2.2e-17,
        "ci_95": [
          0.1548,
          0.2479
        ]
      }
    },
    "random_effect_variance": 0.001383,
    "lrt_for_delta": {
      "chi2": 55.07,
      "df": 1,
      "p_value": 1.1628949457601319e-13,
      "method": "likelihood_ratio",
      "interpretation": "bitrate adds significant variance beyond family/objective"
    }
  },
  "block_bootstrap_all_pairs": {
    "subset": "all_pairs",
    "n_pairs": 190,
    "n_bootstraps_valid": 2000,
    "n_bootstraps_requested": 2000,
    "median_rho": -0.7021,
    "mean_rho": -0.684,
    "ci_95": [
      -0.8169,
      -0.4272
    ]
  },
  "block_bootstrap_same_obj": {
    "subset": "same_obj",
    "n_pairs": 67,
    "n_bootstraps_valid": 2000,
    "n_bootstraps_requested": 2000,
    "median_rho": -0.7096,
    "mean_rho": -0.6697,
    "ci_95": [
      -0.8698,
      -0.2991
    ]
  },
  "leave_one_out": {
    "per_model": [
      {
        "held_out": "beit_base_patch16_224",
        "n_pairs": 171,
        "rho": -0.7127,
        "p_value": 8.17e-28
      },
      {
        "held_out": "beit_large_patch16_224",
        "n_pairs": 171,
        "rho": -0.7333,
        "p_value": 4.03e-30
      },
      {
        "held_out": "clip_vitb16",
        "n_pairs": 171,
        "rho": -0.7211,
        "p_value": 9.78e-29
      },
      {
        "held_out": "clip_vitb32",
        "n_pairs": 171,
        "rho": -0.7227,
        "p_value": 6.58e-29
      },
      {
        "held_out": "clip_vitl14",
        "n_pairs": 171,
        "rho": -0.7564,
        "p_value": 5.62e-33
      },
      {
        "held_out": "convnext_base",
        "n_pairs": 171,
        "rho": -0.6948,
        "p_value": 5.67e-26
      },
      {
        "held_out": "convnext_large",
        "n_pairs": 171,
        "rho": -0.691,
        "p_value": 1.34e-25
      },
      {
        "held_out": "dinov2_vitb14",
        "n_pairs": 171,
        "rho": -0.7118,
        "p_value": 1e-27
      },
      {
        "held_out": "dinov2_vitg14",
        "n_pairs": 171,
        "rho": -0.7179,
        "p_value": 2.2e-28
      },
      {
        "held_out": "dinov2_vitl14",
        "n_pairs": 171,
        "rho": -0.7129,
        "p_value": 7.77e-28
      },
      {
        "held_out": "dinov2_vits14",
        "n_pairs": 171,
        "rho": -0.7473,
        "p_value": 8.2e-32
      },
      {
        "held_out": "efficientnet_b0",
        "n_pairs": 171,
        "rho": -0.694,
        "p_value": 6.7e-26
      },
      {
        "held_out": "mixer_b16_224",
        "n_pairs": 171,
        "rho": -0.7175,
        "p_value": 2.44e-28
      },
      {
        "held_out": "resnet101",
        "n_pairs": 171,
        "rho": -0.7057,
        "p_value": 4.43e-27
      },
      {
        "held_out": "resnet50",
        "n_pairs": 171,
        "rho": -0.7148,
        "p_value": 4.86e-28
      },
      {
        "held_out": "swin_base_patch4_window7_224",
        "n_pairs": 171,
        "rho": -0.6946,
        "p_value": 5.85e-26
      },
      {
        "held_out": "vit_base_patch16_224",
        "n_pairs": 171,
        "rho": -0.7337,
        "p_value": 3.61e-30
      },
      {
        "held_out": "vit_base_patch16_224.mae",
        "n_pairs": 171,
        "rho": -0.6421,
        "p_value": 2.98e-21
      },
      {
        "held_out": "vit_large_patch16_224",
        "n_pairs": 171,
        "rho": -0.7351,
        "p_value": 2.47e-30
      },
      {
        "held_out": "vit_large_patch16_224.mae",
        "n_pairs": 171,
        "rho": -0.6544,
        "p_value": 2.82e-22
      }
    ],
    "n_models": 20,
    "rho_range": [
      -0.7564,
      -0.6421
    ],
    "rho_median": -0.7138
  }
}