Topographica / News: Recent posts

0.9.6 is a major update that includes all the changes since 11/2008, with significant new features, performance improvements, and important bugfixes. We highly recommended that all users (other than those already using an up-to-date SVN version) upgrade to 0.9.6.

A list of new features and improvements is available at http://topographica.org; the release itself is available from http://topographica.org/Downloads/.

0.9.5 is a major update that includes all the changes since 10/2007, with significant new features and important bugfixes. We highly recommended that all users (other than those already using an up-to-date SVN version) upgrade to 0.9.5.

A list of new features and improvements is available at http://topographica.org; the release itself is available from http://topographica.org/Downloads/.

0.9.4 is a major update from 10/2007 that includes all the changes since 4/2007, with significant new features and important bugfixes. It is highly recommended that all users (other than those already using an up to date CVS version) upgrade to 0.9.4.

A list of new features and improvements is available at http://topographica.org; the release itself is available from http://topographica.org/Downloads/.

0.9.3 is a major update that includes all the changes since 11/2006, with significant new features and important bugfixes. It is highly recommended that all users (other than those already using an up to date CVS version) upgrade to 0.9.3.

A list of new features and improvements is available at http://topographica.org; the release itself is available from http://topographica.org/Downloads/.

This version includes numerous bugfixes (e.g. to support GCC 4.1.x compilers), a much more complete user manual, a more useful reference manual, more sample models, flexible joint normalization across Projections, arbitrary control of mapping CF centers (see CoordinateMapperFn), Composite and Selector patterns to allow flexible combinations of input patterns, homeostatic learning and output functions, sigmoid and generalized logistic output functions, and a new disparity map example (including a random dot stereogram input pattern).

Topographica is a neural modeling package under development through a Human Brain Project grant from NIH. Topographica will allow neuroscientists and computational scientists to simulate and understand how topographic maps contribute to brain function.

This version of Topographica includes numerous bugfixes, context-sensitive (balloon) help for nearly every parameter and control, full Windows support, full Mac OS X support, significant performance increases (7X faster on the main example scripts, with more speedups to come), faster startup, better memory management, simpler programming interface, improved state saving (e.g. no longer requiring the original script), independently controllable random number streams, plot window histories, more library components (e.g. Oja rule, CPCA, covariance), prototype spiking neuron support, and much-improved model editor.... read more