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ESB — Engineering Shape Benchmark (机械形状分类)
Purdue Engineering Shape Benchmark,机械零件 3D 形状分类基准。已转为团队统一 7 字段 SFT schema。
⚠ 实测数字与文献不符(本库以实测为准)
| 文献常引 | 实际发行包(本库实测) | |
|---|---|---|
| 模型数 | 866 | 718 |
| 细类数 | 45 | 35 |
超类分布:{'Flat-Thin Wallcomponents': 107, 'Rectangular-Cubic Prism': 133, 'Solid Of Revolution': 478}
数据说明
- 每个模型自带 800×600 的渲染 JPG → 本库
image直接用它,无需额外渲染(属 raw-direct)。 - OBJ / STL 网格路径记录在
metadata.obj_file/metadata.stl_file(本库未内联网格)。 - 发行包自带 2 个官方标记的损坏文件,已剔除并记录:['Solid Of Revolution/Flange Like Parts/FLANGE.STL.corrupt', 'Solid Of Revolution/Flange Like Parts/FLANGE.JPG.corrupt']
- 无官方 train/test split(下游自行切分)。
Schema
query(分类提示) · image(模型渲染 JPG) · annot(细类名) · reasoning(null) ·
cate=B / task=T-TBD · metadata(model, superclass, fine_class, obj/stl 路径)
关于
T-TBD:这是一个明确的占位符,不是真实 task 码。ESB 是整体形状分类(把零件归到 bracket-like / flange-like / gear-like 等工程形状类),在正式任务表(AM/forge_schema.py的TASK_CATE)里找不到干净对应:它不是T-B4的加工特征/几何理解,也不是T-B1/T-B2的缺陷类。 待组会定码后统一改,不臆造。(本库早前曾误用一个并不存在的T-B6,已更正。)
Load
from datasets import load_dataset
ds = load_dataset("AI4Manufacturing/esb")
Gated — request access; granted manually.
Provenance
- 源:https://engineering.purdue.edu/cdesign/wp/downloads/ (3 个超类 tar.gz)
- 论文:Jayanti, Kalyanaraman, Iyer, Ramani, Developing an engineering shape benchmark for CAD models, CAD 2006.
- 许可:Purdue 学术用途(源站未给明确 license,按团队要求在此标注)。请引用上游。
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