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pgmpy: Python Library for Probabilistic Graphical Models

pgmpy is an open-source Python library for working with Probabilistic Graphical Models, specifically focusing on Bayesian Networks. It provides functionalities for structure learning, parameter learning, inference, and causality.

Python
Added on 2025年5月26日
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pgmpy: Python Library for Probabilistic Graphical Models preview
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Project Introduction

Summary

pgmpy is a comprehensive library built in Python that provides tools for creating, analyzing, and working with various types of Probabilistic Graphical Models (PGMs), with a strong emphasis on Bayesian Networks.

Problem Solved

Analyzing complex systems with uncertain relationships and causal dependencies often requires powerful probabilistic modeling techniques. pgmpy addresses this by offering a robust framework for building, learning, and performing inference on graphical models.

Core Features

Structure Learning

Algorithms to learn the graphical structure of a Bayesian Network from data.

Parameter Learning

Methods to learn the conditional probability distributions or parameters for a given network structure.

Inference Algorithms

Supports various inference algorithms like Variable Elimination and Belief Propagation to answer probabilistic queries on the network.

Tech Stack

Python
NumPy
SciPy
NetworkX
Pandas

使用场景

pgmpy is applicable in numerous domains where understanding relationships, uncertainty, and causality from data is crucial, including:

Medical Diagnosis

Details

Model dependencies between symptoms, diseases, and test results to aid in diagnosis and understand probabilistic outcomes.

User Value

Improve accuracy and interpretability of diagnostic models; quantify uncertainty.

System Fault Diagnosis

Details

Build models to identify the root cause of failures in complex systems based on observed symptoms or sensor readings.

User Value

Reduce downtime and maintenance costs by quickly identifying failure points.

Risk Assessment

Details

Model interconnected risks and dependencies in finance, insurance, or project management to quantify overall risk exposure.

User Value

Enable better decision-making under uncertainty; understand the impact of different factors on risk.

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