1{"record_id": "ba6d3043dcfb0e7c6ad45ae35c0629afbc728c5f", "eligible": true, "short_ref": "Haque (2003)", "country": "United States", "city": "College Station, Texas", "property_type": "single-family homes (structurally homogeneous subsample)", "price_type": "sale price per square foot, adjusted to 2000 values (MLS)", "n_obs": 145,2 "sample_period": "1997-2000", "data_source": "MLS sales via local broker, merged with Brazos County Appraisal District", "methods_compared": ["OLS hedonic regression", "Jordan-Elman recurrent ANN"],3 "best_method": "Jordan-Elman recurrent ANN", "metric": "R2", "best_value": 0.8627, "hedonic_value": null,4 "test_set": "holdout", "features_ai": "none",5 "incremental_ai_gain": null, "incremental_ai_metric": "", "marginal_effects": "coefficients", "notes": "ANN trained on 130 obs and evaluated on 15 arbitrarily separated obs: R2 0.7788 (training) and 0.8627 (evaluation set). Hedonic OLS R2 = 0.622 is an in-sample fit on all 145 obs, not the same test set, so hedonic_value is null. Only inputs are age and four siding-material dummies; hedonic coefficients give implicit siding premiums. Conference paper (ASEE), tiny sample.", "confidence": "medium"}6