{ "n_tr": 120000, "n_va": 2000, "n_te": 20000, "path": "B", "lambda_grid": { "lo": -3, "hi": 8, "n": 23, "space": "logspace" }, "knn_chance_at_1": 5e-05, "cells": { "t_vA_ctx": { "selected_lambda": 3162.2776601683795, "val_r2": 0.7088423061350653, "pooled_r2": 0.7080073433760098, "identity_bias_r2": -0.9550237360977374, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.6704, "5": 0.81245, "10": 0.8519 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.7354555616414316 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.322, "5": 0.4718, "10": 0.53805 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 7.0, "mrr": 0.3960884036048522 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.6843, "5": 0.821, "10": 0.85905 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.7472165246448239 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.3529, "5": 0.50925, "10": 0.5743 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 5.0, "mrr": 0.42871492408389794 } }, "t_rbar_ctx": { "selected_lambda": 1000.0, "val_r2": 0.7467243052583293, "pooled_r2": 0.7456883095685409, "identity_bias_r2": -1.2975419387625884, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.5908, "5": 0.7637, "10": 0.81675 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.670762320394042 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.22915, "5": 0.3777, "10": 0.4465 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 17.0, "mrr": 0.30354740445209966 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.6073, "5": 0.7728, "10": 0.8224 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.6837220414817801 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.25255, "5": 0.4089, "10": 0.47795 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 13.0, "mrr": 0.3296536456198221 } }, "t_ebar_ctx": { "selected_lambda": 3162.2776601683795, "val_r2": 0.2779583103239538, "pooled_r2": 0.2795261249620792, "identity_bias_r2": -20.129891491095105, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.12625, "5": 0.2022, "10": 0.24195 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 363.0, "mrr": 0.1651000698912582 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.35825, "5": 0.49445, "10": 0.548 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 6.0, "mrr": 0.42396262033591736 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.7723, "5": 0.8739, "10": 0.90405 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.8195542402351302 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.36875, "5": 0.51565, "10": 0.5768 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 5.0, "mrr": 0.4400232857990939 } }, "t_vA_prefix": { "selected_lambda": 0.001, "val_r2": -0.00018541654624137927, "pooled_r2": 0.00016696351155154332, "identity_bias_r2": -6.539440462072221e-05, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9987.5, "mrr": 0.00052777187326252 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.0005240173833487562 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9984.5, "mrr": 0.0005251011988509727 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.000524035444554743 } }, "t_rbar_prefix": { "selected_lambda": 0.001, "val_r2": -0.00013702861098652264, "pooled_r2": 0.00019818171071606105, "identity_bias_r2": -6.49534237655569e-05, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9985.5, "mrr": 0.0005271564291141935 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.0005240277287107776 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9984.5, "mrr": 0.0005255057501565516 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.0005240354698082842 } }, "t_ebar_prefix": { "selected_lambda": 31622776.60168379, "val_r2": -0.00045650069797198434, "pooled_r2": -1.7550471370864074e-05, "identity_bias_r2": -8.243306926014604e-05, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9998.5, "mrr": 0.0005241112048803939 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.0005241076979981688 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 9988.5, "mrr": 0.0005275852830931918 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 10000.5, "mrr": 0.0005242209033215319 } }, "t_rbar_ctx_mlp": { "epochs_ran": 48, "pooled_r2": 0.777397402345026, "identity_bias_r2": -1.2975419387625884, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.6762, "5": 0.8242, "10": 0.86555 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.7438499838321876 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.22915, "5": 0.3777, "10": 0.4465 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 17.0, "mrr": 0.30354740445209966 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.68325, "5": 0.8274, "10": 0.8664 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.7496334580843733 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.25255, "5": 0.4089, "10": 0.47795 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 13.0, "mrr": 0.3296536456198221 } }, "t_ebar_ctx_mlp": { "epochs_ran": 44, "pooled_r2": 0.2793297754291858, "identity_bias_r2": -20.129891491095105, "knn_map_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.2385, "5": 0.3442, "10": 0.39165 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 57.0, "mrr": 0.28990702043036826 }, "knn_identity_bias_euclidean": { "metric": "euclidean", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.35825, "5": 0.49445, "10": 0.548 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 6.0, "mrr": 0.42396262033591736 }, "knn_map_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.82005, "5": 0.9095, "10": 0.9321 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 1.0, "mrr": 0.8611989308463138 }, "knn_identity_bias_cosine": { "metric": "cosine", "n": 20000, "n_pool": 20000, "acc_at_k": { "1": 0.36875, "5": 0.51565, "10": 0.5768 }, "chance_at_k": { "1": 5e-05, "5": 0.00025, "10": 0.0005 }, "median_rank": 5.0, "mrr": 0.4400232857990939 } } }, "shared_lambda_decomposition": { "lambda": 3162.2776601683795, "additivity_reldev": 2.605027601239454e-12, "share_sae_representable": 0.724448538767415, "share_residual": 0.22293364223369203, "share_cross": 0.052617818998885936, "pooled_r2_vA_at_shared_lambda": 0.7080073433760098 }, "per_corpus_pooled_r2": { "t_vA_ctx__lmsys": 0.6965801379415117, "t_vA_ctx__wildchat": 0.7171503574327518, "t_rbar_ctx__lmsys": 0.7374853073214167, "t_rbar_ctx__wildchat": 0.7511061577473922, "t_ebar_ctx__lmsys": 0.2294287651428213, "t_ebar_ctx__wildchat": 0.3393113901505388 }, "matched_vs_banked_profile_rho_top256": 0.9935182536049438, "git_commit": "ea2b645d99ea9d03399b8b16a63584ae6d0224f8", "timestamp_utc": "2026-08-01T14:40:29.937932Z", "python_version": "3.11.10", "platform": "Linux-6.8.0-90-generic-x86_64-with-glibc2.35", "cuda_visible_devices": "all" }