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            "building:levels": "4",
            "height": "24",
            "roof:colour": "grey",
            "roof:height": "10",
            "roof:shape": "hipped-and-gabled"
          }
        },
        "core_key": "office",
        "core": {
          "source_id": "w240832216",
          "name": "办公楼（贝公楼）",
          "height_m": null,
          "levels": null,
          "raw_tags": {
            "building": "university",
            "building:levels": "3",
            "height": "20.5",
            "name": "办公楼（贝公楼）",
            "name:en": "Administrative Building",
            "name:zh": "办公楼（贝公楼）",
            "name:zh-Hans": "办公楼（贝公楼）",
            "name:zh-Hant": "辦公樓（貝公樓）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:height": "10",
            "roof:shape": "hipped",
            "smoking": "no",
            "wheelchair": "yes"
          }
        },
        "intersection_m2": 1077.0084,
        "ordinary_covered_fraction": 1.0,
        "smaller_overlap_fraction": 1.0,
        "action": "exclude_ordinary_core_duplicate",
        "classification": "INFERRED",
        "reason": "Ground-based ordinary footprint is wholly covered by the explicit core footprint/model; keep the bespoke core representation."
      }
    ],
    "overlap_candidates": [
      {
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          "name": "OSM_r14962080",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "2",
            "type": "multipolygon"
          }
        },
        "b": {
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          "levels": 7.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "7",
            "height": "27.5",
            "name": "理科三号楼（曙东楼）",
            "name:en": "Science Building No. 3",
            "name:zh": "理科三号楼（曙东楼）",
            "name:zh-Hans": "理科三号楼（曙东楼）",
            "name:zh-Hant": "理科三號樓（曙東樓）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "quadruple_saltbox",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
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        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.332666
      },
      {
        "a": {
          "source_id": "r14962081",
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          "raw_tags": {
            "building": "university",
            "building:levels": "7",
            "height": "27.5",
            "name": "理科二号楼（逸夫苑）",
            "name:en": "Science Building No. 2",
            "name:zh": "理科二号楼（逸夫苑）",
            "name:zh-Hans": "理科二号楼（逸夫苑）",
            "name:zh-Hant": "理科二號樓（逸夫苑）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "quadruple_saltbox",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
        "b": {
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          "raw_tags": {
            "building": "yes",
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          }
        },
        "intersection_m2": 2880.7627,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.280578
      },
      {
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          "name": "OSM_w1086578215",
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          "levels": 3.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "3"
          }
        },
        "b": {
          "source_id": "w240832232",
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          "levels": 2.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "2",
            "name": "北京大学国际关系学院",
            "name:en": "School of International Studies, Peking University",
            "wikidata": "Q10902169",
            "wikipedia": "zh:北京大学国际关系学院"
          }
        },
        "intersection_m2": 631.829,
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      },
      {
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            "building": "yes",
            "building:levels": "3"
          }
        },
        "b": {
          "source_id": "w240832232",
          "name": "北京大学国际关系学院",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "2",
            "name": "北京大学国际关系学院",
            "name:en": "School of International Studies, Peking University",
            "wikidata": "Q10902169",
            "wikipedia": "zh:北京大学国际关系学院"
          }
        },
        "intersection_m2": 1744.3736,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.530123
      },
      {
        "a": {
          "source_id": "w1086578217",
          "name": "OSM_w1086578217",
          "height_m": 20.5,
          "levels": 5.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "5",
            "height": "20.5",
            "roof:colour": "grey",
            "roof:shape": "hipped"
          }
        },
        "b": {
          "source_id": "r11823277",
          "name": "综合科研1号楼（逸夫楼）",
          "height_m": 6.5,
          "levels": 1.0,
          "raw_tags": {
            "building": "school",
            "building:levels": "1",
            "height": "6.5",
            "name": "综合科研1号楼（逸夫楼）",
            "name:en": "Integrated Science Research Center No. 1",
            "name:zh": "综合科研1号楼（逸夫楼）",
            "name:zh-Hans": "综合科研1号楼（逸夫楼）",
            "name:zh-Hant": "綜合科研1號樓（逸夫樓）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "hipped",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
        "intersection_m2": 1754.0652,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.725956
      },
      {
        "a": {
          "source_id": "w1086578221",
          "name": "亨利楼",
          "height_m": 9.75,
          "levels": 3.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "3",
            "name": "亨利楼",
            "name:en": "Henry House",
            "name:zh": "亨利楼",
            "name:zh-Hans": "亨利楼",
            "name:zh-Hant": "亨利樓",
            "operator": "北京大学",
            "roof:shape": "gabled",
            "smoking": "no",
            "wheelchair": "yes"
          }
        },
        "b": {
          "source_id": "w1086578220",
          "name": "OSM_w1086578220",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "2",
            "operator": "北京大学",
            "smoking": "no",
            "wheelchair": "yes"
          }
        },
        "intersection_m2": 126.02,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.536227
      }
    ],
    "partitions": [
      {
        "a": {
          "source_id": "r14962080",
          "name": "OSM_r14962080",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "2",
            "type": "multipolygon"
          }
        },
        "b": {
          "source_id": "r11975585",
          "name": "理科三号楼（曙东楼）",
          "height_m": 27.5,
          "levels": 7.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "7",
            "height": "27.5",
            "name": "理科三号楼（曙东楼）",
            "name:en": "Science Building No. 3",
            "name:zh": "理科三号楼（曙东楼）",
            "name:zh-Hans": "理科三号楼（曙东楼）",
            "name:zh-Hant": "理科三號樓（曙東樓）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "quadruple_saltbox",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
        "intersection_m2": 3415.5712,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.332666,
        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "r11975585",
        "subtract_from_source_id": "r14962080",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      },
      {
        "a": {
          "source_id": "r14962081",
          "name": "理科二号楼（逸夫苑）",
          "height_m": 27.5,
          "levels": 7.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "7",
            "height": "27.5",
            "name": "理科二号楼（逸夫苑）",
            "name:en": "Science Building No. 2",
            "name:zh": "理科二号楼（逸夫苑）",
            "name:zh-Hans": "理科二号楼（逸夫苑）",
            "name:zh-Hant": "理科二號樓（逸夫苑）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "quadruple_saltbox",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
        "b": {
          "source_id": "r14962080",
          "name": "OSM_r14962080",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "2",
            "type": "multipolygon"
          }
        },
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        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.280578,
        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "r14962081",
        "subtract_from_source_id": "r14962080",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      },
      {
        "a": {
          "source_id": "w1086578215",
          "name": "OSM_w1086578215",
          "height_m": 9.75,
          "levels": 3.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "3"
          }
        },
        "b": {
          "source_id": "w240832232",
          "name": "北京大学国际关系学院",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "2",
            "name": "北京大学国际关系学院",
            "name:en": "School of International Studies, Peking University",
            "wikidata": "Q10902169",
            "wikipedia": "zh:北京大学国际关系学院"
          }
        },
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        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "w1086578215",
        "subtract_from_source_id": "w240832232",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      },
      {
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          "name": "OSM_w1086578216",
          "height_m": 9.75,
          "levels": 3.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "3"
          }
        },
        "b": {
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          "name": "北京大学国际关系学院",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "university",
            "building:levels": "2",
            "name": "北京大学国际关系学院",
            "name:en": "School of International Studies, Peking University",
            "wikidata": "Q10902169",
            "wikipedia": "zh:北京大学国际关系学院"
          }
        },
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        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "w1086578216",
        "subtract_from_source_id": "w240832232",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      },
      {
        "a": {
          "source_id": "w1086578217",
          "name": "OSM_w1086578217",
          "height_m": 20.5,
          "levels": 5.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "5",
            "height": "20.5",
            "roof:colour": "grey",
            "roof:shape": "hipped"
          }
        },
        "b": {
          "source_id": "r11823277",
          "name": "综合科研1号楼（逸夫楼）",
          "height_m": 6.5,
          "levels": 1.0,
          "raw_tags": {
            "building": "school",
            "building:levels": "1",
            "height": "6.5",
            "name": "综合科研1号楼（逸夫楼）",
            "name:en": "Integrated Science Research Center No. 1",
            "name:zh": "综合科研1号楼（逸夫楼）",
            "name:zh-Hans": "综合科研1号楼（逸夫楼）",
            "name:zh-Hant": "綜合科研1號樓（逸夫樓）",
            "operator": "北京大学",
            "roof:colour": "grey",
            "roof:shape": "hipped",
            "smoking": "no",
            "type": "multipolygon",
            "wheelchair": "yes"
          }
        },
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        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.725956,
        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "w1086578217",
        "subtract_from_source_id": "r11823277",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      },
      {
        "a": {
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          "name": "亨利楼",
          "height_m": 9.75,
          "levels": 3.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "3",
            "name": "亨利楼",
            "name:en": "Henry House",
            "name:zh": "亨利楼",
            "name:zh-Hans": "亨利楼",
            "name:zh-Hant": "亨利樓",
            "operator": "北京大学",
            "roof:shape": "gabled",
            "smoking": "no",
            "wheelchair": "yes"
          }
        },
        "b": {
          "source_id": "w1086578220",
          "name": "OSM_w1086578220",
          "height_m": 6.5,
          "levels": 2.0,
          "raw_tags": {
            "building": "yes",
            "building:levels": "2",
            "operator": "北京大学",
            "smoking": "no",
            "wheelchair": "yes"
          }
        },
        "intersection_m2": 126.02,
        "smaller_overlap_fraction": 1.0,
        "smaller_to_larger_area_ratio": 0.536227,
        "action": "partition_lower_or_less_informative_render_volume",
        "classification": "INFERRED",
        "keep_source_id": "w1086578221",
        "subtract_from_source_id": "w1086578220",
        "reason": "Higher local volume lies within a lower base. Keep higher block; retain all non-overlapping low wings/podium."
      }
    ],
    "height_inferences": [
      {
        "source_id": "w986745060",
        "name": "OSM_w986745060",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745062",
        "name": "历史学系",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745063",
        "name": "OSM_w986745063",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745064",
        "name": "李兆基人文学苑",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745065",
        "name": "李兆基人文学苑",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745066",
        "name": "李兆基人文学苑",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745067",
        "name": "OSM_w986745067",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w986745068",
        "name": "OSM_w986745068",
        "raw_building_type": "house",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 6.5,
          "levels": 2
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w1075644751",
        "name": "李兆基人文学苑",
        "raw_building_type": "bungalow",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 3.5,
          "levels": 1
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w1075644753",
        "name": "OSM_w1075644753",
        "raw_building_type": "bungalow",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 3.5,
          "levels": 1
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w1075644757",
        "name": "OSM_w1075644757",
        "raw_building_type": "bungalow",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 3.5,
          "levels": 1
        },
        "classification": "INFERRED",
        "note": "OSM tags unchanged; no roof form inferred here."
      },
      {
        "source_id": "w1075644758",
        "name": "OSM_w1075644758",
        "raw_building_type": "bungalow",
        "before": {
          "height": 10.5,
          "levels": null,
          "height_accuracy": "INFERRED_levels_or_typology"
        },
        "after": {
          "height": 3.5,
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