metadata
pretty_name: CMAB-Spatial-Join-0.08B
license: cc-by-4.0
language:
- en
tags:
- geospatial
- spatial-join
- benchmark
- building-footprints
- parquet
- china
size_categories:
- 10M<n<100M
task_categories:
- other
configs:
- config_name: summary
data_files:
- split: train
path: summary_stats.parquet
- config_name: level_1
data_files:
- split: train
path: level_1/**/*.parquet
- config_name: level_1_anhui
data_files:
- split: train
path: level_1/province=anhui/*.parquet
- config_name: level_1_beijing
data_files:
- split: train
path: level_1/province=beijing/*.parquet
- config_name: level_1_chongqing
data_files:
- split: train
path: level_1/province=chongqing/*.parquet
- config_name: level_1_fujian
data_files:
- split: train
path: level_1/province=fujian/*.parquet
- config_name: level_1_gansu
data_files:
- split: train
path: level_1/province=gansu/*.parquet
- config_name: level_1_guangdong
data_files:
- split: train
path: level_1/province=guangdong/*.parquet
- config_name: level_1_guangxi
data_files:
- split: train
path: level_1/province=guangxi/*.parquet
- config_name: level_1_guizhou
data_files:
- split: train
path: level_1/province=guizhou/*.parquet
- config_name: level_1_hainan
data_files:
- split: train
path: level_1/province=hainan/*.parquet
- config_name: level_1_hebei
data_files:
- split: train
path: level_1/province=hebei/*.parquet
- config_name: level_1_heilongjiang
data_files:
- split: train
path: level_1/province=heilongjiang/*.parquet
- config_name: level_1_henan
data_files:
- split: train
path: level_1/province=henan/*.parquet
- config_name: level_1_hubei
data_files:
- split: train
path: level_1/province=hubei/*.parquet
- config_name: level_1_hunan
data_files:
- split: train
path: level_1/province=hunan/*.parquet
- config_name: level_1_jiangsu
data_files:
- split: train
path: level_1/province=jiangsu/*.parquet
- config_name: level_1_jiangxi
data_files:
- split: train
path: level_1/province=jiangxi/*.parquet
- config_name: level_1_jilin
data_files:
- split: train
path: level_1/province=jilin/*.parquet
- config_name: level_1_liaoning
data_files:
- split: train
path: level_1/province=liaoning/*.parquet
- config_name: level_1_neimenggu
data_files:
- split: train
path: level_1/province=neimenggu/*.parquet
- config_name: level_1_ningxia
data_files:
- split: train
path: level_1/province=ningxia/*.parquet
- config_name: level_1_qinghai
data_files:
- split: train
path: level_1/province=qinghai/*.parquet
- config_name: level_1_shaanxi
data_files:
- split: train
path: level_1/province=shaanxi/*.parquet
- config_name: level_1_shandong
data_files:
- split: train
path: level_1/province=shandong/*.parquet
- config_name: level_1_shanghai
data_files:
- split: train
path: level_1/province=shanghai/*.parquet
- config_name: level_1_shanxi
data_files:
- split: train
path: level_1/province=shanxi/*.parquet
- config_name: level_1_sichuan
data_files:
- split: train
path: level_1/province=sichuan/*.parquet
- config_name: level_1_tianjin
data_files:
- split: train
path: level_1/province=tianjin/*.parquet
- config_name: level_1_xinjiang
data_files:
- split: train
path: level_1/province=xinjiang/*.parquet
- config_name: level_1_xizang
data_files:
- split: train
path: level_1/province=xizang/*.parquet
- config_name: level_1_yunnan
data_files:
- split: train
path: level_1/province=yunnan/*.parquet
- config_name: level_1_zhejiang
data_files:
- split: train
path: level_1/province=zhejiang/*.parquet
- config_name: level_2
data_files:
- split: train
path: level_2/**/*.parquet
- config_name: level_2_anhui
data_files:
- split: train
path: level_2/province=anhui/*.parquet
- config_name: level_2_beijing
data_files:
- split: train
path: level_2/province=beijing/*.parquet
- config_name: level_2_chongqing
data_files:
- split: train
path: level_2/province=chongqing/*.parquet
- config_name: level_2_fujian
data_files:
- split: train
path: level_2/province=fujian/*.parquet
- config_name: level_2_gansu
data_files:
- split: train
path: level_2/province=gansu/*.parquet
- config_name: level_2_guangdong
data_files:
- split: train
path: level_2/province=guangdong/*.parquet
- config_name: level_2_guangxi
data_files:
- split: train
path: level_2/province=guangxi/*.parquet
- config_name: level_2_guizhou
data_files:
- split: train
path: level_2/province=guizhou/*.parquet
- config_name: level_2_hainan
data_files:
- split: train
path: level_2/province=hainan/*.parquet
- config_name: level_2_hebei
data_files:
- split: train
path: level_2/province=hebei/*.parquet
- config_name: level_2_heilongjiang
data_files:
- split: train
path: level_2/province=heilongjiang/*.parquet
- config_name: level_2_henan
data_files:
- split: train
path: level_2/province=henan/*.parquet
- config_name: level_2_hubei
data_files:
- split: train
path: level_2/province=hubei/*.parquet
- config_name: level_2_hunan
data_files:
- split: train
path: level_2/province=hunan/*.parquet
- config_name: level_2_jiangsu
data_files:
- split: train
path: level_2/province=jiangsu/*.parquet
- config_name: level_2_jiangxi
data_files:
- split: train
path: level_2/province=jiangxi/*.parquet
- config_name: level_2_jilin
data_files:
- split: train
path: level_2/province=jilin/*.parquet
- config_name: level_2_liaoning
data_files:
- split: train
path: level_2/province=liaoning/*.parquet
- config_name: level_2_neimenggu
data_files:
- split: train
path: level_2/province=neimenggu/*.parquet
- config_name: level_2_ningxia
data_files:
- split: train
path: level_2/province=ningxia/*.parquet
- config_name: level_2_qinghai
data_files:
- split: train
path: level_2/province=qinghai/*.parquet
- config_name: level_2_shaanxi
data_files:
- split: train
path: level_2/province=shaanxi/*.parquet
- config_name: level_2_shandong
data_files:
- split: train
path: level_2/province=shandong/*.parquet
- config_name: level_2_shanghai
data_files:
- split: train
path: level_2/province=shanghai/*.parquet
- config_name: level_2_shanxi
data_files:
- split: train
path: level_2/province=shanxi/*.parquet
- config_name: level_2_sichuan
data_files:
- split: train
path: level_2/province=sichuan/*.parquet
- config_name: level_2_tianjin
data_files:
- split: train
path: level_2/province=tianjin/*.parquet
- config_name: level_2_xinjiang
data_files:
- split: train
path: level_2/province=xinjiang/*.parquet
- config_name: level_2_xizang
data_files:
- split: train
path: level_2/province=xizang/*.parquet
- config_name: level_2_yunnan
data_files:
- split: train
path: level_2/province=yunnan/*.parquet
- config_name: level_2_zhejiang
data_files:
- split: train
path: level_2/province=zhejiang/*.parquet
- config_name: level_3
data_files:
- split: train
path: level_3/**/*.parquet
- config_name: level_3_anhui
data_files:
- split: train
path: level_3/province=anhui/*.parquet
- config_name: level_3_beijing
data_files:
- split: train
path: level_3/province=beijing/*.parquet
- config_name: level_3_chongqing
data_files:
- split: train
path: level_3/province=chongqing/*.parquet
- config_name: level_3_fujian
data_files:
- split: train
path: level_3/province=fujian/*.parquet
- config_name: level_3_gansu
data_files:
- split: train
path: level_3/province=gansu/*.parquet
- config_name: level_3_guangdong
data_files:
- split: train
path: level_3/province=guangdong/*.parquet
- config_name: level_3_guangxi
data_files:
- split: train
path: level_3/province=guangxi/*.parquet
- config_name: level_3_guizhou
data_files:
- split: train
path: level_3/province=guizhou/*.parquet
- config_name: level_3_hainan
data_files:
- split: train
path: level_3/province=hainan/*.parquet
- config_name: level_3_hebei
data_files:
- split: train
path: level_3/province=hebei/*.parquet
- config_name: level_3_heilongjiang
data_files:
- split: train
path: level_3/province=heilongjiang/*.parquet
- config_name: level_3_henan
data_files:
- split: train
path: level_3/province=henan/*.parquet
- config_name: level_3_hubei
data_files:
- split: train
path: level_3/province=hubei/*.parquet
- config_name: level_3_hunan
data_files:
- split: train
path: level_3/province=hunan/*.parquet
- config_name: level_3_jiangsu
data_files:
- split: train
path: level_3/province=jiangsu/*.parquet
- config_name: level_3_jiangxi
data_files:
- split: train
path: level_3/province=jiangxi/*.parquet
- config_name: level_3_jilin
data_files:
- split: train
path: level_3/province=jilin/*.parquet
- config_name: level_3_liaoning
data_files:
- split: train
path: level_3/province=liaoning/*.parquet
- config_name: level_3_neimenggu
data_files:
- split: train
path: level_3/province=neimenggu/*.parquet
- config_name: level_3_ningxia
data_files:
- split: train
path: level_3/province=ningxia/*.parquet
- config_name: level_3_qinghai
data_files:
- split: train
path: level_3/province=qinghai/*.parquet
- config_name: level_3_shaanxi
data_files:
- split: train
path: level_3/province=shaanxi/*.parquet
- config_name: level_3_shandong
data_files:
- split: train
path: level_3/province=shandong/*.parquet
- config_name: level_3_shanghai
data_files:
- split: train
path: level_3/province=shanghai/*.parquet
- config_name: level_3_shanxi
data_files:
- split: train
path: level_3/province=shanxi/*.parquet
- config_name: level_3_sichuan
data_files:
- split: train
path: level_3/province=sichuan/*.parquet
- config_name: level_3_tianjin
data_files:
- split: train
path: level_3/province=tianjin/*.parquet
- config_name: level_3_xinjiang
data_files:
- split: train
path: level_3/province=xinjiang/*.parquet
- config_name: level_3_xizang
data_files:
- split: train
path: level_3/province=xizang/*.parquet
- config_name: level_3_yunnan
data_files:
- split: train
path: level_3/province=yunnan/*.parquet
- config_name: level_3_zhejiang
data_files:
- split: train
path: level_3/province=zhejiang/*.parquet
- config_name: level_4
data_files:
- split: train
path: level_4/**/*.parquet
- config_name: level_4_anhui
data_files:
- split: train
path: level_4/province=anhui/*.parquet
- config_name: level_4_beijing
data_files:
- split: train
path: level_4/province=beijing/*.parquet
- config_name: level_4_chongqing
data_files:
- split: train
path: level_4/province=chongqing/*.parquet
- config_name: level_4_fujian
data_files:
- split: train
path: level_4/province=fujian/*.parquet
- config_name: level_4_gansu
data_files:
- split: train
path: level_4/province=gansu/*.parquet
- config_name: level_4_guangdong
data_files:
- split: train
path: level_4/province=guangdong/*.parquet
- config_name: level_4_guangxi
data_files:
- split: train
path: level_4/province=guangxi/*.parquet
- config_name: level_4_guizhou
data_files:
- split: train
path: level_4/province=guizhou/*.parquet
- config_name: level_4_hainan
data_files:
- split: train
path: level_4/province=hainan/*.parquet
- config_name: level_4_hebei
data_files:
- split: train
path: level_4/province=hebei/*.parquet
- config_name: level_4_heilongjiang
data_files:
- split: train
path: level_4/province=heilongjiang/*.parquet
- config_name: level_4_henan
data_files:
- split: train
path: level_4/province=henan/*.parquet
- config_name: level_4_hubei
data_files:
- split: train
path: level_4/province=hubei/*.parquet
- config_name: level_4_hunan
data_files:
- split: train
path: level_4/province=hunan/*.parquet
- config_name: level_4_jiangsu
data_files:
- split: train
path: level_4/province=jiangsu/*.parquet
- config_name: level_4_jiangxi
data_files:
- split: train
path: level_4/province=jiangxi/*.parquet
- config_name: level_4_jilin
data_files:
- split: train
path: level_4/province=jilin/*.parquet
- config_name: level_4_liaoning
data_files:
- split: train
path: level_4/province=liaoning/*.parquet
- config_name: level_4_neimenggu
data_files:
- split: train
path: level_4/province=neimenggu/*.parquet
- config_name: level_4_ningxia
data_files:
- split: train
path: level_4/province=ningxia/*.parquet
- config_name: level_4_qinghai
data_files:
- split: train
path: level_4/province=qinghai/*.parquet
- config_name: level_4_shaanxi
data_files:
- split: train
path: level_4/province=shaanxi/*.parquet
- config_name: level_4_shandong
data_files:
- split: train
path: level_4/province=shandong/*.parquet
- config_name: level_4_shanghai
data_files:
- split: train
path: level_4/province=shanghai/*.parquet
- config_name: level_4_shanxi
data_files:
- split: train
path: level_4/province=shanxi/*.parquet
- config_name: level_4_sichuan
data_files:
- split: train
path: level_4/province=sichuan/*.parquet
- config_name: level_4_tianjin
data_files:
- split: train
path: level_4/province=tianjin/*.parquet
- config_name: level_4_xinjiang
data_files:
- split: train
path: level_4/province=xinjiang/*.parquet
- config_name: level_4_xizang
data_files:
- split: train
path: level_4/province=xizang/*.parquet
- config_name: level_4_yunnan
data_files:
- split: train
path: level_4/province=yunnan/*.parquet
- config_name: level_4_zhejiang
data_files:
- split: train
path: level_4/province=zhejiang/*.parquet
Introduction
A lightweight axis-aligned rectangle (AABB) benchmark derived from the CMAB building rooftop dataset, designed for evaluating spatial join pipelines (indexing, vectorized filtering, output materialization).
This dataset stores base AABBs and expanded (influence) AABBs for each building under 4 workload levels. It is organized as Parquet shards, partitioned by level and province.
Dataset construction details and the reference builder are available at: https://github.com/DANNHIROAKI/CMAB-Spatial-Join-0.08B-Builder
How to Use
1) Download a small slice (recommended)
from huggingface_hub import snapshot_download
# Download only what you need (e.g., Level-1 + Beijing) with snapshot_download
local_dir = snapshot_download(
repo_id="DannHiroaki/CMAB-Spatial-Join-0.08B",
repo_type="dataset",
allow_patterns=[
"dataset_metadata.json",
"file_manifest.parquet",
"summary_stats.parquet",
"level_1/province=beijing/*.parquet",
],
)
print("Downloaded to:", local_dir)
2) Read a shard with Polars
import polars as pl
from pathlib import Path
p = Path(local_dir) / "level_1" / "province=beijing" / "data_00001.parquet"
df = pl.read_parquet(p)
print(df.select(["building_uid","func","level","d_m","xmin","ymin","xmax","ymax","exmin","eymin","exmax","eymax"]).head())
3) Query with DuckDB (fast ad-hoc analytics)
import duckdb
from pathlib import Path
glob_path = str(Path(local_dir) / "level_1" / "province=beijing" / "*.parquet")
con = duckdb.connect()
n = con.execute(f"""
SELECT COUNT(*)
FROM read_parquet('{glob_path}')
WHERE func = 'Residential'
""").fetchone()[0]
print("Residential rows (level_1, beijing):", n)
4) Use file_manifest.parquet to discover shards
import polars as pl
from pathlib import Path
mf = pl.read_parquet(Path(local_dir) / "file_manifest.parquet")
print(mf.select(["level","province","path","num_rows"]).sort(["level","province"]).head(20))
Attribution
This benchmark is derived from CMAB:
Paper: CMAB: A Multi-Attribute Building Dataset of China
@article{Zhang2025SciData, author = {Zhang, Y. and Zhao, H. and Long, Y.}, title = {{CMAB: A Multi-Attribute Building Dataset of China}}, journal = {Scientific Data}, volume = {12}, number = {430}, year = {2025}, doi = {10.1038/s41597-025-04730-5}, url = {https://doi.org/10.1038/s41597-025-04730-5} }Dataset: CMAB-The World’s First National-Scale Multi-Attribute Building Dataset
@misc{Zhang2025CMAB, author = {Zhang, Yecheng and Zhao, Huimin and Long, Ying}, title = {{CMAB-The World's First National-Scale Multi-Attribute Building Dataset}}, year = {2025}, month = apr, publisher = {figshare}, doi = {10.6084/m9.figshare.27992417}, url = {https://doi.org/10.6084/m9.figshare.27992417}, howpublished = {dataset} }
If you use this dataset in research, please cite the CMAB paper/dataset and reference this benchmark repository.