Apophenia

Apophenia is an open statistical library for working with data sets and statistical models. It provides functions on the same level as those of the typical stats package (such as OLS, probit, or singular value decomposition) but doesn't tie the user to an ad hoc language or environment. The core functions are written in C, but should be easy to bind to functions in Perl/Phython.

It is written to scale well. If you have tried to analyze your gigabyte data set using other open source tools but found that they weren't up to handling large data sets or exceptionally computationally-intensive work, Apophenia is the library for you.

To date, the library has over a hundred functions to facilitate statistical computing, such as:

• maximum likelihood estimators for probit, Exponential, Gamma, Waring, Yule, Zipf, etc. estimators,
• OLS and GLS,
• database querying and maintenance utilities,
• moments, percentiles, and other basic stats utilities,
• singular value decomposition tools,
• t-tests, F-tests, etc.

 2007–2009 Alexey Beshenov.
Contact: al@cadadr.org.