fastcausal 0.1.1

Fast, easy-to-use causal discovery analysis tools

fastcausal

Fast, easy-to-use causal discovery analysis tools for Python.

Overview

fastcausal provides a unified Python interface for causal discovery analysis, combining the functionality of several earlier packages into one pip-installable tool. It supports both interactive Jupyter notebook workflows and config-driven batch processing of large datasets.

Key features:

• No Java dependency — uses tetrad-port (C++ port of Tetrad algorithms) instead of Java
• Three causal discovery algorithms — PC, FGES, GFCI
• Prior knowledge support — temporal tiers, forbidden/required edges
• Bootstrapped stability analysis — edge frequency selection across subsampled runs
• SEM fitting — automatic structural equation modeling via semopy
• Flexible graph visualization — node styling with fnmatch patterns, multi-graph comparison with shared layouts
• Batch pipeline — config-driven processing of hundreds of cases via CLI
• Report generation — automated Word document reports with embedded graphs

Installation

pip install fastcausal            # core package
pip install fastcausal[sem]       # + SEM fitting (semopy)
pip install fastcausal[jupyter]   # + Jupyter/matplotlib/seaborn
pip install fastcausal[batch]     # + Word report generation
pip install fastcausal[all]       # everything

Quick Start

from fastcausal import FastCausal

fc = FastCausal()

# Load data
df = fc.load_sample("boston")

# Run causal discovery
results, graph = fc.run_search(df, algorithm="gfci", alpha=0.05)

# View the graph
fc.show_graph(graph)

# Save to file
fc.save_graph(graph, "my_result", plot_format="png")

Interactive Workflow

from fastcausal import FastCausal

fc = FastCausal()
df = fc.load_csv("my_data.csv")

# Add lagged columns for time-series analysis
df = fc.add_lag_columns(df)
df = fc.standardize(df)

# Create temporal prior knowledge
knowledge = fc.create_lag_knowledge(df.columns)

# Run stability analysis (bootstrapped)
results, graph = fc.run_stability(
    df,
    algorithm="gfci",
    knowledge=knowledge,
    runs=100,
    min_fraction=0.75,
)

# Visualize with custom node styles
fc.show_graph(graph, node_styles=[
    {"pattern": "*_lag", "shape": "box", "fillcolor": "lightyellow"},
    {"pattern": "PANAS_*", "fillcolor": "lightblue"},
])

CLI Usage

fastcausal provides a command-line interface for batch processing:

# Data preparation
fastcausal parse --config proj/config.yaml

# Batch causal discovery across cases
fastcausal run --config proj/config.yaml
fastcausal run --config proj/config.yaml --start 0 --end 50
fastcausal run --config proj/config.yaml --list

# Effect size analysis and heatmaps
fastcausal paths --config proj/config.yaml

# Generate Word report
fastcausal report --config proj/config.yaml --mode 2wide

# Quick single-file analysis
fastcausal analyze data.csv --algorithm gfci --output results/

Supported Algorithms

Algorithm	Description	Key Parameters
PC	Constraint-based, uses conditional independence tests	alpha
FGES	Score-based, greedy search with BIC scoring	penalty_discount
GFCI	Hybrid constraint + score-based	alpha, penalty_discount

Architecture

fastcausal consolidates four earlier codebases into a layered architecture:

pip install fastcausal
        |
    fastcausal  (API + CLI + viz + SEM + batch)
   /          \
tetrad-port    dgraph_flex
(C++ algorithms) (graph rendering)

• tetrad-port — C++ port of CMU Tetrad algorithms, exposed via nanobind
• dgraph_flex — Graphviz-based directed graph rendering

Project Structure

fastcausal/
├── core.py              # FastCausal class (main API)
├── search.py            # Algorithm wrapper (PC, FGES, GFCI)
├── sem.py               # SEM fitting via semopy
├── transform.py         # Lag columns, standardization, subsampling
├── knowledge.py         # Prior knowledge handling
├── edges.py             # Edge parsing, selection, deduplication
├── cli.py               # Click-based CLI
├── viz/
│   ├── styling.py       # fnmatch-based node styling
│   ├── graphs.py        # Graph display and save (single + multi)
│   └── plots.py         # Heatmaps and effect size plots
├── pipeline/
│   ├── config.py        # YAML config parsing (v4.0 + v5.0)
│   ├── parse.py         # Data preparation engine
│   ├── batch.py         # Batch causal discovery
│   ├── paths.py         # Effect size analysis
│   ├── report.py        # Word document generation
│   └── metrics.py       # Graph metrics (centrality, ancestors)
└── io/
    ├── data.py           # CSV loading, sample datasets
    └── wearables.py      # Fitbit/Garmin integration (planned)

Documentation

• Consolidation Plan — Implementation plan and phase status
• Consolidation Recommendation — Architecture decision record
• Project Conventions — Development guidelines and conventions

Config File Format

fastcausal uses YAML config files for batch processing. Version 5.0 is the current format; version 4.0 (from cda_tools2) is accepted with a deprecation warning.

GLOBAL:
  version: 5.0
  name: my_project
  title: "My Causal Analysis"

CAUSAL:
  algorithm: gfci
  alpha: 0.05
  penalty_discount: 1.0
  knowledge: prior.txt
  standardize_cols: true

Requirements

• Python >= 3.11
• tetrad-port >= 0.1.0
• dgraph_flex >= 0.1.11
• Graphviz (system install for graph rendering)

License

MIT

Citation

If you use fastcausal in your research, please cite the relevant algorithm papers and this package.