Physical Reasoning Toolkit 🔬

A unified toolkit for researchers and engineers working on AI physical reasoning. PRKit provides a shared foundation for representing physics problems, running inference with multiple model providers, evaluating outputs with physics-aware comparators, and building structured annotation workflows.

PRKit applies a “unified interface” idea to the full physical-reasoning loop (data ↔ annotation ↔ inference ↔ evaluation), rather than focusing on datasets alone.

🎯 Project Overview

PRKit centers on core components that define the physical reasoning ontology. Three integrated subpackages build on this foundation:

• Core components: PhysicsDomain, AnswerCategory, PhysicsProblem, Answer, PhysicalDataset, PhysicsSolution, BaseModelClient, create_model_client, PRKitLogger—the shared abstractions used across the toolkit.
• prkit_datasets: A Datasets-like hub that downloads/loads benchmarks into the unified schema (PhysicsProblem, PhysicalDataset).
• prkit_annotation: Workflow-oriented tools for structured, lower-level labels (e.g., domain/subdomain, theorem usage).
• prkit_evaluation: Evaluate-like components for physics-oriented scoring and comparison (e.g., symbolic/numerical answer matching).

💡 Quick Example

from prkit.prkit_datasets import DatasetHub
from prkit.prkit_core.model_clients import create_model_client

# Load any benchmark into the unified schema (PhysicsProblem, PhysicalDataset)
dataset = DatasetHub.load("physreason", variant="full", split="test")

# Run inference with the unified model client (core component)
client = create_model_client("gpt-4.1-mini")
for problem in dataset[:3]:
    print(client.chat(problem.question)[:200)

The same pattern works across different datasets and model providers—swap the dataset name or model identifier.

📖 Documentation

Quick Links:

• 🔧 CORE.md - Core components: domain model, model client, logger, and definitions
• 📚 DATASETS.md - Complete guide to supported datasets and benchmarks
• 📊 EVALUATION.md - Evaluation metrics and comparison strategies
• 📝 CHANGELOG.md - Version history and release notes

🚀 Quick Start

Prerequisites

• Python 3.10+ (required)

Installation

Option 1: Install from PyPI (Recommended)

# Install the latest stable version
pip install physical-reasoning-toolkit

# Verify installation
python -c "import prkit; print(prkit.__version__)"

Option 2: Install from Source

Step 1: Clone the Repository

git clone https://github.com/sherryzyh/physical_reasoning_toolkit.git
cd physical_reasoning_toolkit

Step 2: Install

# Install the package (regular install for end users)
pip install .

# Verify installation
python -c "import prkit; print('✅ Toolkit installed successfully!')"

Provider API Key Setup

Option 1: Export as environmental variable

# For model provider integration (optional)
export OPENAI_API_KEY="your-openai-api-key"
export GEMINI_API_KEY="your-gemini-api-key"
export DEEPSEEK_API_KEY="your-deepseek-api-key"

# For logging configuration (optional)
export PRKIT_LOG_LEVEL=INFO
export PRKIT_LOG_FILE=/var/log/prkit.log  # Optional: defaults to {cwd}/prkit_logs/prkit.log if not set

Option 2: Create a .env file at your project root 📖 See CORE.md (Model Client section) for supported providers and usage.

Validate Setup

python -c "
import prkit
from prkit.prkit_datasets import DatasetHub
from prkit.prkit_annotation.workflows import WorkflowComposer
print('✅ All packages imported successfully!')
print(f'PRKit version: {prkit.__version__}')
"

🏗️ Repository Structure

physical_reasoning_toolkit/
├── src/prkit/                       # Main package (modern src-layout)
│   ├── prkit_core/                  # Core components (domain models, model clients, logging)
│   ├── prkit_datasets/              # Dataset loading and management
│   ├── prkit_annotation/            # Annotation workflows and tools
│   └── prkit_evaluation/            # Evaluation metrics and benchmarks
├── tests/                           # Unit tests
├── pyproject.toml                   # Package configuration
├── LICENSE                          # MIT License
└── README.md                        # This file

Note: The actual dataset files are stored externally (see Environment Setup section). This repository contains only the toolkit code, examples, and documentation.

What's Included vs. External

In Repository (Code & Documentation):

• ✅ src/prkit/: Complete toolkit with core components and 3 subpackages
• ✅ tests/: Unit tests (for contributors)

External (Data & Runtime):

• 📁 Data Directory: Dataset files (set via DATASET_CACHE_DIR)
• 🔑 API Keys: Model provider credentials (if applicable)
• 📊 Log Files: Runtime logs (default: {cwd}/prkit_logs/prkit.log, can be overridden via PRKIT_LOG_FILE)

📦 Package Overview

The toolkit is organized around core components and three subpackages that use them. Subpackages depend only on prkit_core; there are no direct dependencies between prkit_datasets, prkit_annotation, and prkit_evaluation.

Component	Purpose
prkit_core	Core components, see below
prkit_datasets	Dataset hub: loaders, downloaders, unified schema
prkit_evaluation	Comparators and accuracy metrics
prkit_annotation	Workflow pipelines for domain/theorem annotation

Core Components 🔧

The essential building blocks of the physical-reasoning-toolkit. All datasets, inference, evaluation, and annotation workflows use these components.

• PhysicsDomain — Enumeration of physics subfields (mechanics, thermodynamics, quantum mechanics, optics, etc.) for problem classification. Aligned with UGPhysics, PHYBench, TPBench. Use PhysicsDomain.from_string() for flexible parsing.
• AnswerCategory — Enumeration of answer types for normalization and evaluation: NUMBER, PHYSICAL_QUANTITY, EQUATION, FORMULA, TEXT, OPTION. Drives how answers are compared (numerical precision, symbolic equivalence, exact match).
• PhysicsProblem — The canonical representation of a physics problem. Required: problem_id, question. Optional: answer (Answer), solution, domain, image_path, problem_type (MC/OE), options, correct_option. Supports dictionary-like access and load_images() for visual problems.
• Answer — Unified answer model. value holds the number (NUMBER), numeric part (PHYSICAL_QUANTITY), option string (OPTION), or plain string (EQUATION, FORMULA, TEXT). unit is optional and used only for PHYSICAL_QUANTITY. Type checks, unit helpers, LaTeX handling, option indexing.
• PhysicalDataset — Collection of PhysicsProblem instances. Indexing, slicing, get_by_id(), filter_by_domain(), take(), sample(), save_to_json() / from_json(). Provides get_statistics() for domain and problem-type distribution.
• PhysicsSolution — Bundles a PhysicsProblem, model agent_answer, and optional intermediate_steps. Captures the full solution trace for evaluation and analysis.
• BaseModelClient — Abstract base for model clients. Subclasses implement chat(user_prompt, image_paths=None).
• PRKitLogger — Centralized logging with colored output, file logging, and env config (PRKIT_LOG_LEVEL, PRKIT_LOG_FILE, etc.).

📖 See CORE.md for the full domain model, entity relationships, subpackage dependency diagram, and import reference.

prkit_evaluation 📈

Answer comparators (symbolic, numerical, textual, option-based), accuracy evaluator, and physics-focused assessment protocols.

📖 EVALUATION.md

prkit_datasets 📊

Dataset hub with a Datasets-like interface: DatasetHub.load() for PHYBench, PhysReason, UGPhysics, SeePhys, PhyX (plus JEEBench, TPBench loaders). Auto-download, variant selection, and reproducible sampling.

📖 DATASETS.md

prkit_annotation 🏷️

Modular workflows (domain classification, theorem extraction) via WorkflowComposer and presets. Model-assisted and human-in-the-loop.

📖 ANNOTATION.md

🆘 Troubleshooting

Common Issues

Python Version Problems

# Check Python version
python --version  # Should be 3.10+

# If using wrong version
python -m venv venv
source venv/bin/activate

Import Errors

# Reinstall in development mode
pip install -e .

# Check installation
pip show physical-reasoning-toolkit

Data Directory Issues

# Set data directory (external to repository)
export DATASET_CACHE_DIR=/path/to/your/data

# Check directory structure
ls -la $DATASET_CACHE_DIR

# Verify dataset files exist
ls -la $DATASET_CACHE_DIR/ugphysics/
ls -la $DATASET_CACHE_DIR/PhysReason/

Getting Help

1. Review logs: Check logging output for detailed error information
2. Verify setup: Run the testing commands above
3. Check data: Ensure datasets are properly downloaded and accessible
4. Check documentation: Start with the root docs linked below

🤝 Contributing

Community & Support

• GitHub Issues: Report bugs or request features
• Discussions: Share ideas and get help

Development Setup

# Clone and install in development mode
git clone https://github.com/sherryzyh/physical_reasoning_toolkit.git
cd physical_reasoning_toolkit
pip install -e ".[dev]"

# Run code quality tools
black src/
isort src/
mypy src/

# Run tests
pytest tests/

Adding New Features

1. Follow existing patterns: Use consistent logging and error handling
2. Add tests: Include tests for new functionality
3. Update documentation: Add examples and update README files
4. Maintain compatibility: Ensure changes don't break existing functionality

Submitting Pull Requests

1. Fork the repository
2. Create a feature branch
3. Make your changes with tests
4. Ensure all tests pass
5. Submit a pull request with clear description

📄 Citation

If you use PRKit in your research, please cite it as follows:

BibTeX:

@software{zhang2026physicalreasoningtoolkit,
  author = {Zhang, Yinghuan},
  title = {Physical Reasoning Toolkit},
  year = {2026},
  license = {MIT},
  url = {https://github.com/sherryzyh/physical_reasoning_toolkit},
  abstract = {A unified toolkit for researchers and engineers working on AI physical reasoning. PRKit provides a shared foundation for representing physics problems, running inference with multiple model providers, evaluating outputs with physics-aware comparators, and building structured annotation workflows.}
}

For citation files, see CITATION.cff and CITATION.bib in the repository root.

🙏 Acknowledgments

PRKit integrates and builds upon several excellent physics reasoning benchmarks and datasets. We thank the creators of:

• PhysReason, PHYBench, UGPhysics, SeePhys, PhyX, and other benchmark datasets
• The open-source community for their valuable contributions and feedback

Note: For detailed citations and references to the original dataset papers, please see the Citations section in DATASETS.md.

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.

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Ready to advance physics reasoning research! 🚀✨

Quick Links: pip install physical-reasoning-toolkit | GitHub | Documentation | Issues