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Statistical computations and models for Python

Project description

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About Statsmodels

Statsmodels is a Python package that provides a complement to scipy for statistical computations including descriptive statistics and estimation and inference for statistical models.

Documentation

The documentation for the latest release is at

https://www.statsmodels.org/stable/

The documentation for the development version is at

https://www.statsmodels.org/dev/

Recent improvements are highlighted in the release notes

https://www.statsmodels.org/stable/release/version0.9.html

Backups of documentation are available at https://statsmodels.github.io/stable/ and https://statsmodels.github.io/dev/.

Main Features

  • Linear regression models:

    • Ordinary least squares

    • Generalized least squares

    • Weighted least squares

    • Least squares with autoregressive errors

    • Quantile regression

    • Recursive least squares

  • Mixed Linear Model with mixed effects and variance components

  • GLM: Generalized linear models with support for all of the one-parameter exponential family distributions

  • Bayesian Mixed GLM for Binomial and Poisson

  • GEE: Generalized Estimating Equations for one-way clustered or longitudinal data

  • Discrete models:

    • Logit and Probit

    • Multinomial logit (MNLogit)

    • Poisson and Generalized Poisson regression

    • Negative Binomial regression

    • Zero-Inflated Count models

  • RLM: Robust linear models with support for several M-estimators.

  • Time Series Analysis: models for time series analysis

    • Complete StateSpace modeling framework

      • Seasonal ARIMA and ARIMAX models

      • VARMA and VARMAX models

      • Dynamic Factor models

      • Unobserved Component models

    • Markov switching models (MSAR), also known as Hidden Markov Models (HMM)

    • Univariate time series analysis: AR, ARIMA

    • Vector autoregressive models, VAR and structural VAR

    • Vector error correction modle, VECM

    • exponential smoothing, Holt-Winters

    • Hypothesis tests for time series: unit root, cointegration and others

    • Descriptive statistics and process models for time series analysis

  • Survival analysis:

    • Proportional hazards regression (Cox models)

    • Survivor function estimation (Kaplan-Meier)

    • Cumulative incidence function estimation

  • Multivariate:

    • Principal Component Analysis with missing data

    • Factor Analysis with rotation

    • MANOVA

    • Canonical Correlation

  • Nonparametric statistics: Univariate and multivariate kernel density estimators

  • Datasets: Datasets used for examples and in testing

  • Statistics: a wide range of statistical tests

    • diagnostics and specification tests

    • goodness-of-fit and normality tests

    • functions for multiple testing

    • various additional statistical tests

  • Imputation with MICE, regression on order statistic and Gaussian imputation

  • Mediation analysis

  • Graphics includes plot functions for visual analysis of data and model results

  • I/O

    • Tools for reading Stata .dta files, but pandas has a more recent version

    • Table output to ascii, latex, and html

  • Miscellaneous models

  • Sandbox: statsmodels contains a sandbox folder with code in various stages of developement and testing which is not considered “production ready”. This covers among others

    • Generalized method of moments (GMM) estimators

    • Kernel regression

    • Various extensions to scipy.stats.distributions

    • Panel data models

    • Information theoretic measures

How to get it

The master branch on GitHub is the most up to date code

https://www.github.com/statsmodels/statsmodels

Source download of release tags are available on GitHub

https://github.com/statsmodels/statsmodels/tags

Binaries and source distributions are available from PyPi

https://pypi.org/project/statsmodels/

Binaries can be installed in Anaconda

conda install statsmodels

Installing from sources

See INSTALL.txt for requirements or see the documentation

https://statsmodels.github.io/dev/install.html

License

Modified BSD (3-clause)

Discussion and Development

Discussions take place on our mailing list.

http://groups.google.com/group/pystatsmodels

We are very interested in feedback about usability and suggestions for improvements.

Bug Reports

Bug reports can be submitted to the issue tracker at

https://github.com/statsmodels/statsmodels/issues

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