1{2 "record_id": "9227a7e5ee91510694ed7aa9358e1709d0798b32",3 "eligible": true,4 "short_ref": "d'Amato (2004)",5 "country": "Italy",6 "city": "Bari (Carrassi-Poggiofranco / Picone zone)",7 "property_type": "residential (apartments implied, not specified)",8 "price_type": "transaction price (EUR, time-adjusted to September 2004)",9 "n_obs": 69,10 "sample_period": "transactions up to September 2004 (start not printed)",11 "data_source": "Real Estate Market Observatory, Polytechnic University of Bari",12 "methods_compared": [13 "linear multiple regression analysis (MRA)",14 "rough set theory with value tolerance relation (RST)"15 ],16 "best_method": "linear MRA (hedonic)",17 "metric": "MAPE",18 "best_value": 11.0,19 "hedonic_value": 11.0,20 "test_set": "holdout",21 "features_ai": "none",22 "incremental_ai_gain": null,23 "incremental_ai_metric": "",24 "marginal_effects": "coefficients",25 "notes": "Early rule-based AI (rough sets) vs MRA. RST rules derived from 19 transactions and tested on the other 50; MRA fitted on all 69 (R2 0.86, adj. 0.85) and evaluated on the same 50 (in-sample for MRA). Text: RST 18% MAPE vs MRA 11% MAPE, valuation variation 15.31%; MRA judged superior. Tables 1 and 5 are images not captured in the text layer. RST gives no marginal prices.",26 "confidence": "medium"27}