Skip to main content

Compute generalised second order Stirling numbers

Project description

=====
pystb
=====

Compute generalised second order Stirling numbers via `libstb
<https://github.com/wbuntine/libstb>`_.

`libstb <https://github.com/wbuntine/libstb>`_ "contains library routines that
provide alternative ways of computing generalised second order Stirling numbers
used in working with Pitman-Yor and Dirichlet processes (PYP and DP)."
`libstb <https://github.com/wbuntine/libstb>`_ is written by Wray Buntine.

Usage
-----

An instance of the class ``STable`` provides access to (pre-calculated)
generalized Stirling numbers of the second kind, :math:`S^n_{m,a}`. Initialize
the table with the maximum ``n`` and maximum ``m`` which will be needed.

>>> import pystb
>>> stable = pystb.STable(10000, 10000, 0.5)
>>> stable.S(5, 3) # S^5_{3, 0.5}
>>> stable[5, 3] # alias for stable.S(5, 3)

Project details


Release history Release notifications

This version
History Node

0.1.1.dev7

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page