1{2 "record_id": "0795e1f2569ab3c9b87c0451960aa54739093319",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Performance of Multiple Linear Regression and Nonlinear Neural Networks and Fuzzy Logic Techniques in Modelling House Prices",7 "year": 2012,8 "doi": "10.3844/jmssp.2012.419.434",9 "country": "Australia",10 "region_city": "Bathurst, New South Wales",11 "sample_start": 1992,12 "sample_end": 2004,13 "property_type": "single_family",14 "price_type": "transaction",15 "data_source": "Bathurst house sales 1992-2004 (approx. 4,210 sales across 15 suburbs, Table 3) with GIS-derived location attributes and land values",16 "document_type": "journal",17 "estimators": [18 "OLS",19 "ML_marginal"20 ],21 "spatial_method": "none (map coordinates X, Y as regressors)",22 "time_fe": false,23 "location_fe": false,24 "se_type": "unknown",25 "n_obs_total": 4210,26 "ai_methods": [27 "neural_network",28 "ANFIS neuro-fuzzy"29 ],30 "notes": "Journal of Mathematics and Statistics 8(4). Model-comparison paper (stepwise MR vs NN vs ANFIS, 10-fold CV). The only printed hedonic coefficients are in Equation (2), p. 429: Saleprice = -1.720E7 + 1.4 Landvalue + 5491 Yearsold + 7491 Dcity - 6305 Dculd + 1613 Slope + 3 X - 23052 Dpark (signs verified on the rendered page). No standard errors, t-statistics or p-values are printed anywhere; adjusted R2 0.3694 (Table 2). Dependent variable: sale price in Australian dollars (level). No structural characteristics (Australian data lack them); area, Dschool, Height, Aspect and Y were dropped by stepwise selection. Distance units are not printed (metres implied by the 500 m accessibility discussion). Total N inferred from the sum of 'Sold' by suburb in Table 3 (4,210) and the error counts in Table 2 (1176 = 28%). X map coordinate not extracted. All coefficients medium confidence (equation only, no inference statistics) - not usable in weighted synthesis."31 },32 "models": [33 {34 "model_id": "EQ2-c1",35 "table": "Equation 2",36 "column": "1",37 "page": 11,38 "dep_var": "Sale price (AUD, level)",39 "dep_transform": "level",40 "estimator": "OLS",41 "n_obs": 4210,42 "r2": 0.3694,43 "se_or_t_in_parentheses": "none",44 "sample_subset": "Stepwise multiple regression, all Bathurst sales; adjusted R2 0.3694 from Table 2; N inferred"45 }46 ],47 "coefficients": [48 {49 "model_id": "EQ2-c1",50 "var_name_printed": "Landvalue",51 "taxonomy_id": "other",52 "x_transform": "level",53 "x_unit": "currency (estimated land value, AUD)",54 "beta": 1.4,55 "se": null,56 "t": null,57 "p": null,58 "p_stars": "",59 "ci_lo": null,60 "ci_hi": null,61 "page": 11,62 "confidence": "medium",63 "notes": "Estimated land value of the parcel (AUD); coefficient read from Equation (2), no SE/t/p printed"64 },65 {66 "model_id": "EQ2-c1",67 "var_name_printed": "Yearsold",68 "taxonomy_id": "transaction_timing",69 "x_transform": "level",70 "x_unit": "years (calendar year of sale)",71 "beta": 5491,72 "se": null,73 "t": null,74 "p": null,75 "p_stars": "",76 "ci_lo": null,77 "ci_hi": null,78 "page": 11,79 "confidence": "medium",80 "notes": "Year of sale as a linear trend; coefficient read from Equation (2), no SE/t/p printed"81 },82 {83 "model_id": "EQ2-c1",84 "var_name_printed": "Dcity",85 "taxonomy_id": "cbd_distance",86 "x_transform": "level",87 "x_unit": "m (distance to CBD; unit not printed, metres implied)",88 "beta": 7491,89 "se": null,90 "t": null,91 "p": null,92 "p_stars": "",93 "ci_lo": null,94 "ci_hi": null,95 "page": 11,96 "confidence": "medium",97 "notes": "Positive sign as printed; coefficient read from Equation (2), no SE/t/p printed"98 },99 {100 "model_id": "EQ2-c1",101 "var_name_printed": "Dculd",102 "taxonomy_id": "other",103 "x_transform": "level",104 "x_unit": "m (distance to cul-de-sac; unit not printed)",105 "beta": -6305,106 "se": null,107 "t": null,108 "p": null,109 "p_stars": "",110 "ci_lo": null,111 "ci_hi": null,112 "page": 11,113 "confidence": "medium",114 "notes": "Distance to the nearest cul-de-sac; coefficient read from Equation (2), no SE/t/p printed"115 },116 {117 "model_id": "EQ2-c1",118 "var_name_printed": "Slope",119 "taxonomy_id": "other",120 "x_transform": "level",121 "x_unit": "degrees (slope of parcel centroid)",122 "beta": 1613,123 "se": null,124 "t": null,125 "p": null,126 "p_stars": "",127 "ci_lo": null,128 "ci_hi": null,129 "page": 11,130 "confidence": "medium",131 "notes": "Topographic slope (Slope_deg); coefficient read from Equation (2), no SE/t/p printed"132 },133 {134 "model_id": "EQ2-c1",135 "var_name_printed": "Dpark",136 "taxonomy_id": "green_space",137 "x_transform": "level",138 "x_unit": "m (distance to closest park; unit not printed)",139 "beta": -23052,140 "se": null,141 "t": null,142 "p": null,143 "p_stars": "",144 "ci_lo": null,145 "ci_hi": null,146 "page": 11,147 "confidence": "medium",148 "notes": "Negative sign as printed; coefficient read from Equation (2), no SE/t/p printed"149 }150 ]151}