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Project Description

horizont implements a number of topic models. Conventions from scikit-learn are followed.

The following models are implemented using Gibbs sampling.

  • Latent Dirichlet allocation (Blei et al., 2003; Pritchard et al., 2000)
  • (Coming soon) Logistic normal topic model
  • (Coming soon) Dynamic topic model (Blei and Lafferty, 2006)

Getting started

horizont.LDA implements latent Dirichlet allocation (LDA) using Gibbs sampling. The interface follows conventions in scikit-learn.

>>> import numpy as np
>>> from horizont import LDA
>>> X = np.array([[1,1], [2, 1], [3, 1], [4, 1], [5, 8], [6, 1]])
>>> model = LDA(n_topics=2, random_state=0, n_iter=100)
>>> doc_topic = model.fit_transform(X)  # estimate of document-topic distributions
>>> model.components_  # estimate of topic-word distributions

Requirements

Python 2.7 or Python 3.3+ is required. The following packages are also required:

GSL is required for random number generation inside the Pólya-Gamma random variate generator. On Debian-based sytems, GSL may be installed with the command sudo apt-get install libgsl0-dev. horizont looks for GSL headers and libraries in /usr/include and /usr/lib/ respectively.

Cython is needed if compiling from source.

License

horizont is licensed under Version 3.0 of the GNU General Public License. See LICENSE file for a text of the license or visit http://www.gnu.org/copyleft/gpl.html.

Release History

Release History

0.0.5

This version

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0.0.4

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0.0.3

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0.0.1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
horizont-0.0.5.tar.gz (1.3 MB) Copy SHA256 Checksum SHA256 Source Sep 8, 2014

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