1{2 "record_id": "a90efa2e2b4a4c7fde54cbffdb07fb2a1d2e8ed7",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Examining the vintage effect in hedonic pricing using spatially varying coefficients models: a case study of single-family houses in the Canton of Zurich",7 "year": 2022,8 "doi": "10.1186/s41937-021-00080-2",9 "country": "Switzerland",10 "region_city": "Canton of Zurich",11 "sample_start": 2018,12 "sample_end": 2019,13 "property_type": "single_family",14 "price_type": "transaction",15 "data_source": "FPRE (Fahrlaender Partner) arm's-length SFH transactions collected by Swiss banks/insurers, 2018Q3-2019Q4, 1578 obs, locations = centroids of 268 grid cells",16 "document_type": "journal",17 "estimators": [18 "other"19 ],20 "spatial_method": "GP-based spatially varying coefficients (SVC) model, maximum likelihood (R package varycoef); SVCs on intercept, Z.age, Z.age2",21 "time_fe": true,22 "location_fe": false,23 "se_type": "unknown",24 "n_obs_total": 1578,25 "ai_methods": [26 "Gaussian process SVC"27 ],28 "notes": "Table 3 p.8 reports mean (global) coefficients with SEs in parentheses (Hessian-based). Significance: '.' p<0.1, '*' p<0.05, '**' p<0.01, '***' p<0.001, 'n.s.' not significant. Dependent variable log adjusted transaction price (CHF, excluding parking). Year-quarter dummies (ref. 2018Q3) not extracted. Local SVC estimates only mapped (Fig. 5). Standardized age: Z.age = age/27."29 },30 "models": [31 {32 "model_id": "T3-SVC",33 "table": "3",34 "column": "Mean mu_j",35 "page": 8,36 "dep_var": "log transaction price (CHF)",37 "dep_transform": "log",38 "estimator": "other",39 "n_obs": 1578,40 "r2": null,41 "se_or_t_in_parentheses": "se",42 "sample_subset": "Full sample; error variance tau2 = 0.0242"43 }44 ],45 "coefficients": [46 {47 "model_id": "T3-SVC",48 "var_name_printed": "Z.age",49 "taxonomy_id": "age",50 "x_transform": "other",51 "x_unit": "years",52 "beta": -0.1495,53 "se": 0.0254,54 "t": null,55 "p": null,56 "p_stars": "***",57 "ci_lo": null,58 "ci_hi": null,59 "page": 8,60 "confidence": "high",61 "notes": "Mean (global) effect of a spatially varying coefficient; Z.age = age / SD(age), SD of age = 27 years (Table 2), so beta per year = beta/27; quadratic in Z.age2"62 },63 {64 "model_id": "T3-SVC",65 "var_name_printed": "Z.age2",66 "taxonomy_id": "age",67 "x_transform": "squared",68 "x_unit": "years",69 "beta": 0.0114,70 "se": 0.0062,71 "t": null,72 "p": null,73 "p_stars": ".",74 "ci_lo": null,75 "ci_hi": null,76 "page": 8,77 "confidence": "high",78 "notes": "Square of standardized age (Z.age^2); mean effect of SVC; '.' = p<0.1"79 },80 {81 "model_id": "T3-SVC",82 "var_name_printed": "log (volume)",83 "taxonomy_id": "living_area",84 "x_transform": "log",85 "x_unit": "m3",86 "beta": 0.5132,87 "se": 0.0222,88 "t": null,89 "p": null,90 "p_stars": "***",91 "ci_lo": null,92 "ci_hi": null,93 "page": 8,94 "confidence": "high",95 "notes": "Building VOLUME in m3 (SIA Zurich 2003), not floor area; elasticity"96 },97 {98 "model_id": "T3-SVC",99 "var_name_printed": "log (plotsize)",100 "taxonomy_id": "lot_size",101 "x_transform": "log",102 "x_unit": "m2",103 "beta": 0.172,104 "se": 0.0129,105 "t": null,106 "p": null,107 "p_stars": "***",108 "ci_lo": null,109 "ci_hi": null,110 "page": 8,111 "confidence": "high",112 "notes": "Plot size m2, elasticity"113 },114 {115 "model_id": "T3-SVC",116 "var_name_printed": "renov",117 "taxonomy_id": "renovation",118 "x_transform": "level",119 "x_unit": "index",120 "beta": 0.0274,121 "se": 0.0059,122 "t": null,123 "p": null,124 "p_stars": "***",125 "ci_lo": null,126 "ci_hi": null,127 "page": 8,128 "confidence": "high",129 "notes": "Need-for-renovation score 0-4 (difference between actual and theoretical building condition, higher = better)"130 },131 {132 "model_id": "T3-SVC",133 "var_name_printed": "standard",134 "taxonomy_id": "condition",135 "x_transform": "level",136 "x_unit": "index",137 "beta": 0.0911,138 "se": 0.0082,139 "t": null,140 "p": null,141 "p_stars": "***",142 "ci_lo": null,143 "ci_hi": null,144 "page": 8,145 "confidence": "high",146 "notes": "Building standard/quality rating 2-5 (higher = better)"147 },148 {149 "model_id": "T3-SVC",150 "var_name_printed": "micro",151 "taxonomy_id": "other",152 "x_transform": "level",153 "x_unit": "index",154 "beta": 0.0385,155 "se": 0.0075,156 "t": null,157 "p": null,158 "p_stars": "***",159 "ci_lo": null,160 "ci_hi": null,161 "page": 8,162 "confidence": "high",163 "notes": "Micro-location quality rating 2-5 (higher = better)"164 },165 {166 "model_id": "T3-SVC",167 "var_name_printed": "SFHtype 2",168 "taxonomy_id": "dwelling_type",169 "x_transform": "dummy",170 "x_unit": "binary",171 "beta": -0.0062,172 "se": 0.012,173 "t": null,174 "p": null,175 "p_stars": "n.s.",176 "ci_lo": null,177 "ci_hi": null,178 "page": 8,179 "confidence": "high",180 "notes": "Semi-detached vs detached (reference)"181 },182 {183 "model_id": "T3-SVC",184 "var_name_printed": "SFHtype3",185 "taxonomy_id": "dwelling_type",186 "x_transform": "dummy",187 "x_unit": "binary",188 "beta": -0.0274,189 "se": 0.0165,190 "t": null,191 "p": null,192 "p_stars": ".",193 "ci_lo": null,194 "ci_hi": null,195 "page": 8,196 "confidence": "high",197 "notes": "Row house vs detached (reference); '.' = p<0.1"198 },199 {200 "model_id": "T3-SVC",201 "var_name_printed": "energy2",202 "taxonomy_id": "energy_efficiency",203 "x_transform": "dummy",204 "x_unit": "binary",205 "beta": 0.0119,206 "se": 0.0281,207 "t": null,208 "p": null,209 "p_stars": "n.s.",210 "ci_lo": null,211 "ci_hi": null,212 "page": 8,213 "confidence": "high",214 "notes": "Enhanced energy efficiency standard vs insulated shell (reference); only 40 obs"215 }216 ]217}