1{2 "record_id": "db3684d67741de25ae92064ef093bf9c1d604ef8",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Analyzing Key Determinants of Property Valuation in Boston Neighborhoods",7 "year": 2025,8 "doi": "10.54254/2754-1169/2025.bj25752",9 "country": "United States",10 "region_city": "Boston, MA",11 "sample_start": 2024,12 "sample_end": 2024,13 "property_type": "mixed",14 "price_type": "appraisal",15 "data_source": "City of Boston FY2024 property assessment data (Analyze Boston open data portal)",16 "document_type": "conference",17 "estimators": [18 "OLS"19 ],20 "spatial_method": "none (ZIP-code dummies)",21 "time_fe": false,22 "location_fe": true,23 "se_type": "unknown",24 "n_obs_total": null,25 "ai_methods": [26 "K-means clustering (descriptive segmentation, not used for coefficients)"27 ],28 "notes": "Student conference paper (ICEMGD 2025). Dependent variable is the assessed total value (appraisal), not a transaction price. Table 1 lists slope coefficients in dollars only; no SE, t, p or N. ZIP-code dummy coefficients (02108 Beacon Hill +589,000; 02121 Dorchester -432,000) are location fixed effects, not extracted. Exclude from primary synthesis (no variance information)."29 },30 "models": [31 {32 "model_id": "T1-c1",33 "table": "1",34 "column": "1",35 "page": 5,36 "dep_var": "Total assessed (appraisal) value, USD, FY2024 City of Boston assessment",37 "dep_transform": "level",38 "estimator": "OLS",39 "n_obs": null,40 "r2": 0.736,41 "se_or_t_in_parentheses": "none",42 "sample_subset": "Multiple linear regression fitted on a 70% training split; ZIP-code dummies (one-hot) included, not extracted; outliers below 1st/above 99th percentile removed; N not stated; RMSE 279,830 USD"43 }44 ],45 "coefficients": [46 {47 "model_id": "T1-c1",48 "var_name_printed": "Living area",49 "taxonomy_id": "living_area",50 "x_transform": "level",51 "x_unit": "sqft",52 "beta": 414.48,53 "se": null,54 "t": null,55 "p": null,56 "p_stars": "",57 "ci_lo": null,58 "ci_hi": null,59 "page": 5,60 "confidence": "medium",61 "notes": "Living area in square feet; slope coefficient in dollars, no SE/t/p reported"62 },63 {64 "model_id": "T1-c1",65 "var_name_printed": "Full bath",66 "taxonomy_id": "bathrooms",67 "x_transform": "level",68 "x_unit": "count",69 "beta": 155785,70 "se": null,71 "t": null,72 "p": null,73 "p_stars": "",74 "ci_lo": null,75 "ci_hi": null,76 "page": 5,77 "confidence": "medium",78 "notes": "Number of full bathrooms; slope coefficient in dollars, no SE/t/p reported"79 },80 {81 "model_id": "T1-c1",82 "var_name_printed": "Land value",83 "taxonomy_id": "other",84 "x_transform": "level",85 "x_unit": "USD (assessed land value)",86 "beta": 1.04,87 "se": null,88 "t": null,89 "p": null,90 "p_stars": "",91 "ci_lo": null,92 "ci_hi": null,93 "page": 5,94 "confidence": "medium",95 "notes": "Assessed land value component entered as regressor; taxonomy other; slope coefficient in dollars, no SE/t/p reported"96 },97 {98 "model_id": "T1-c1",99 "var_name_printed": "Half bath",100 "taxonomy_id": "bathrooms",101 "x_transform": "level",102 "x_unit": "count (half bathrooms)",103 "beta": 132309.92,104 "se": null,105 "t": null,106 "p": null,107 "p_stars": "",108 "ci_lo": null,109 "ci_hi": null,110 "page": 5,111 "confidence": "medium",112 "notes": "Number of half bathrooms; slope coefficient in dollars, no SE/t/p reported"113 },114 {115 "model_id": "T1-c1",116 "var_name_printed": "Num bedroom",117 "taxonomy_id": "bedrooms",118 "x_transform": "level",119 "x_unit": "count",120 "beta": -7783.65,121 "se": null,122 "t": null,123 "p": null,124 "p_stars": "",125 "ci_lo": null,126 "ci_hi": null,127 "page": 5,128 "confidence": "medium",129 "notes": "Number of bedrooms; slope coefficient in dollars, no SE/t/p reported"130 },131 {132 "model_id": "T1-c1",133 "var_name_printed": "Num kitchen",134 "taxonomy_id": "kitchen_quality",135 "x_transform": "level",136 "x_unit": "count (number of kitchens)",137 "beta": -232968.69,138 "se": null,139 "t": null,140 "p": null,141 "p_stars": "",142 "ci_lo": null,143 "ci_hi": null,144 "page": 5,145 "confidence": "medium",146 "notes": "Number of kitchens (count, proxy for multi-unit), not kitchen quality; slope coefficient in dollars, no SE/t/p reported"147 },148 {149 "model_id": "T1-c1",150 "var_name_printed": "Gross-living area",151 "taxonomy_id": "other",152 "x_transform": "level",153 "x_unit": "sqft (gross area minus living area, non-livable space)",154 "beta": -268.59,155 "se": null,156 "t": null,157 "p": null,158 "p_stars": "",159 "ci_lo": null,160 "ci_hi": null,161 "page": 5,162 "confidence": "medium",163 "notes": "Constructed variable gross area minus living area; taxonomy other; slope coefficient in dollars, no SE/t/p reported"164 },165 {166 "model_id": "T1-c1",167 "var_name_printed": "Land sf",168 "taxonomy_id": "lot_size",169 "x_transform": "level",170 "x_unit": "sqft",171 "beta": 0.05,172 "se": null,173 "t": null,174 "p": null,175 "p_stars": "",176 "ci_lo": null,177 "ci_hi": null,178 "page": 5,179 "confidence": "medium",180 "notes": "Land area in square feet; slope coefficient in dollars, no SE/t/p reported"181 },182 {183 "model_id": "T1-c1",184 "var_name_printed": "Owner occupied",185 "taxonomy_id": "other",186 "x_transform": "binary",187 "x_unit": "binary",188 "beta": 27603.03,189 "se": null,190 "t": null,191 "p": null,192 "p_stars": "",193 "ci_lo": null,194 "ci_hi": null,195 "page": 5,196 "confidence": "medium",197 "notes": "Owner-occupancy indicator; taxonomy other; slope coefficient in dollars, no SE/t/p reported"198 }199 ]200}