README.md

---
pretty_name: PIE2F-CAD
license: apache-2.0
tags:
- cad
- parametric-cad
- 3d
- code
- trajectories
- engineering
- text-to-cad
size_categories:
- 100K<n<1M
dataset_info:
- config_name: cad_core
  features:
  - name: id
    dtype: string
  - name: domain
    dtype: string
  - name: task_family
    dtype: string
  - name: complexity_tier
    dtype: int32
  - name: complexity_score
    dtype: float64
  - name: symmetry
    dtype: string
  - name: instruction
    dtype: string
  - name: program
    dtype: string
  - name: trajectory
    dtype: string
  - name: parameter_schema
    dtype: string
  - name: geometry
    dtype: string
  - name: imports
    dtype: string
  - name: external_dependencies
    dtype: string
  - name: uses_external_dependency
    dtype: bool
  - name: num_operations
    dtype: int32
  - name: num_geometry_operations
    dtype: int32
  - name: num_unique_operations
    dtype: int32
  - name: operation_histogram
    dtype: string
  - name: geometry_operation_histogram
    dtype: string
  - name: program_chars
    dtype: int32
  - name: program_lines
    dtype: int32
  - name: ast_nodes
    dtype: int32
  - name: ast_depth
    dtype: int32
  - name: num_faces
    dtype: int64
  - name: num_edges
    dtype: int64
  - name: num_vertices
    dtype: int64
  - name: volume
    dtype: float64
  - name: surface_area
    dtype: float64
  - name: quality_score
    dtype: float64
  - name: canonical_program_hash
    dtype: string
  - name: trajectory_hash
    dtype: string
  - name: geometry_hash
    dtype: string
  - name: split_group
    dtype: string
  splits:
  - name: train
    num_bytes: 353480150
    num_examples: 89980
  - name: validation
    num_bytes: 19500727
    num_examples: 4964
  - name: test
    num_bytes: 19862143
    num_examples: 5056
  download_size: 81832576
  dataset_size: 392843020
- config_name: text_to_cad
  features:
  - name: id
    dtype: string
  - name: task_family
    dtype: string
  - name: complexity_tier
    dtype: int32
  - name: complexity_score
    dtype: float64
  - name: instruction
    dtype: string
  - name: parameter_schema
    dtype: string
  - name: geometry
    dtype: string
  - name: split_group
    dtype: string
  - name: target_program
    dtype: string
  - name: target_program_hash
    dtype: string
  splits:
  - name: train
    num_bytes: 214154558
    num_examples: 89980
  - name: validation
    num_bytes: 11896598
    num_examples: 4964
  - name: test
    num_bytes: 12024788
    num_examples: 5056
  download_size: 61794833
  dataset_size: 238075944
configs:
- config_name: cad_core
  data_files:
  - split: train
    path: cad_core/train-*
  - split: validation
    path: cad_core/validation-*
  - split: test
    path: cad_core/test-*
  default: true
- config_name: text_to_cad
  data_files:
  - split: train
    path: text_to_cad/train-*
  - split: validation
    path: text_to_cad/validation-*
  - split: test
    path: text_to_cad/test-*
---

# PIE2F-CAD

PIE2F-CAD is a structured parametric CAD dataset by Parergon for training and evaluating text-to-CAD systems.

It contains 100,000 aligned instruction and program records with construction sequences, geometry metadata, quality scores and fixed group-aware splits. A 5,000-record multimodal subset adds eight renders, STL meshes and STEP geometry.

## Configurations

- `cad_core`: complete programs, instructions and structured CAD metadata.
- `text_to_cad`: compact instruction-to-program training pairs.
- `cad_multimodal`: programs and instructions paired with renders, STL and STEP assets.

## Usage

```python
from datasets import load_dataset

dataset = load_dataset(
    "Parergon/pie2f-cad",
    "text_to_cad",
    token=True,
)
```

Records are normalized, syntax-validated, deduplicated and assigned to deterministic group-aware splits.

The `trajectory` field represents the ordered construction calls in each program. It is not a desktop interaction recording or runtime trace.

## License

Apache License 2.0.