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Libra-Tk
Algorithms for learning and inference with discrete probabilistic models.
About Libra-Tk
Libra-Tk is a collection of algorithms for learning and inference with discrete probabilistic models, including Bayesian networks, Markov networks, dependency networks, sum-product networks, and arithmetic circuits. It focuses on structure learning, especially for tractable models where exact inference is efficient.
Each algorithm is provided as a command-line program for interactive use or scripting, with consistent options and file formats across the toolkit.
Key features
- Learn tree-structured Bayesian networks with Chow-Liu algorithm
- Learn dependency networks and Markov networks from dependency networks
- Learn compact arithmetic circuits for Bayesian and Markov networks
- Learn sum-product network structure with ID-SPN algorithm
- Run Gibbs sampling, belief propagation, max-product, and mean field inference
- Score models with likelihood and condition models on evidence
Best for: Researchers and developers working with discrete probabilistic models who need structure learning and inference via command-line tools.
Good for
- Focus on structure learning for tractable models with efficient exact inference
- Consistent options and file formats across command-line programs
- Supports Bayesian networks, Markov networks, dependency networks, sum-product networks, and arithmetic circuits
Watch out for
- Handles discrete probabilistic models only
- Discriminative structure learning of arithmetic circuits is listed as coming in a future update
Libra-Tk at a glance
- Website
- libra.cs.uoregon.edu
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Libra-Tk FAQ
What types of models does Libra-Tk work with?
Bayesian networks, Markov networks, dependency networks, sum-product networks, and arithmetic circuits with discrete variables.
How are the algorithms provided?
Each algorithm is implemented as a command-line program suitable for interactive use or scripting, with consistent options and file formats.
Who wrote Libra and how is it licensed?
It was written by Daniel Lowd and Amirmohammad (Pedram) Rooshenas and released under a modified BSD license.
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