1{2 "record_id": "ba6d3043dcfb0e7c6ad45ae35c0629afbc728c5f",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "An ANN Model for the Influence of Siding Materials on Single-Family Home Values",7 "year": 2003,8 "doi": "10.18260/1-2--12549",9 "country": "United States",10 "region_city": "College Station, Texas",11 "sample_start": 1997,12 "sample_end": 2000,13 "property_type": "single_family",14 "price_type": "transaction",15 "data_source": "145 MLS confirmed sales of structurally homogeneous single-family homes, validated with Brazos County Appraisal District data",16 "document_type": "conference",17 "estimators": [18 "OLS"19 ],20 "spatial_method": "none",21 "time_fe": false,22 "location_fe": false,23 "se_type": "unknown",24 "n_obs_total": 145,25 "ai_methods": [26 "ANN (Jordan-Elman recurrent network) for price prediction, compared with hedonic OLS"27 ],28 "notes": "Hedonic equation printed in text only (p. 5): PPSQFT00 = 52.419 - 0.515*AGE_YR + 16.595*CONST_VENEER + 15.734*CONST_FRAME + 18.323*CONST_MIX + 37.642*CONST_STUCO; R2 = 0.622, F significant at 0.0001; no SEs, t-statistics or p-values printed for individual coefficients (text states the five inputs were statistically significant). Dependent variable: sale price per heated square foot adjusted to year-2000 dollars (level). Reference siding category not stated (all four siding dummies have coefficients; text compares stucco with brick veneer: +$21/sqft). ANN results are predictive only (no marginal effects) and not extracted."29 },30 "models": [31 {32 "model_id": "EQ1-c1",33 "table": "text equation p.5",34 "column": "1",35 "page": 5,36 "dep_var": "PPSQFT00: sale price per square foot adjusted to 2000 value (USD/sqft)",37 "dep_transform": "per_m2",38 "estimator": "OLS",39 "n_obs": 145,40 "r2": 0.622,41 "se_or_t_in_parentheses": "none",42 "sample_subset": "homogeneous single-family homes, 1997-2000",43 "notes": "per square foot (not per m2); coefficients only, no inference statistics printed"44 }45 ],46 "coefficients": [47 {48 "model_id": "EQ1-c1",49 "var_name_printed": "AGE_YR",50 "taxonomy_id": "age",51 "x_transform": "level",52 "x_unit": "years",53 "beta": -0.515,54 "se": null,55 "t": null,56 "p": null,57 "p_stars": "",58 "ci_lo": null,59 "ci_hi": null,60 "page": 5,61 "confidence": "medium",62 "notes": "age of the building at sale in years; USD per sqft; no SE/t printed, text says variables were statistically significant"63 },64 {65 "model_id": "EQ1-c1",66 "var_name_printed": "CONST_VENEER",67 "taxonomy_id": "roof_materials",68 "x_transform": "binary",69 "x_unit": "binary",70 "beta": 16.595,71 "se": null,72 "t": null,73 "p": null,74 "p_stars": "",75 "ci_lo": null,76 "ci_hi": null,77 "page": 5,78 "confidence": "medium",79 "notes": "at least 85% of exterior is brick veneer; USD per sqft; no SE/t printed, text says variables were statistically significant"80 },81 {82 "model_id": "EQ1-c1",83 "var_name_printed": "CONST_FRAME",84 "taxonomy_id": "roof_materials",85 "x_transform": "binary",86 "x_unit": "binary",87 "beta": 15.734,88 "se": null,89 "t": null,90 "p": null,91 "p_stars": "",92 "ci_lo": null,93 "ci_hi": null,94 "page": 5,95 "confidence": "medium",96 "notes": "asbestos / T111 plywood siding; USD per sqft; no SE/t printed, text says variables were statistically significant"97 },98 {99 "model_id": "EQ1-c1",100 "var_name_printed": "CONST_MIX",101 "taxonomy_id": "roof_materials",102 "x_transform": "binary",103 "x_unit": "binary",104 "beta": 18.323,105 "se": null,106 "t": null,107 "p": null,108 "p_stars": "",109 "ci_lo": null,110 "ci_hi": null,111 "page": 5,112 "confidence": "medium",113 "notes": "combination of two siding materials; USD per sqft; no SE/t printed, text says variables were statistically significant"114 },115 {116 "model_id": "EQ1-c1",117 "var_name_printed": "CONST_STUCO",118 "taxonomy_id": "roof_materials",119 "x_transform": "binary",120 "x_unit": "binary",121 "beta": 37.642,122 "se": null,123 "t": null,124 "p": null,125 "p_stars": "",126 "ci_lo": null,127 "ci_hi": null,128 "page": 5,129 "confidence": "medium",130 "notes": "stucco-paint / sheet sidings; USD per sqft; no SE/t printed, text says variables were statistically significant"131 }132 ]133}