lisa-lab/pylearn2 — pull request #354 by capybaralet (2013-06-05 16:30:02+00:00)
Title: Summary of edits:

These are edits I made to use Pylearn2 for experiments using pairs of patches and the displacement between them to do unsupervised feature learning.

Here is a summary of changes

0. datasets/dense_design_matrix.py
- added stamps parameter and functionality to DenseDesignMatrix class
1. datasets/preprocessing.py
- implemented keep_var_fraction option in PCA class
- added classes: ExtractPatchesWithPosition (creates stamps) and
ExtractPatchPairs (reads stamps)
- removed duplicate CentralWindow class
2. pca.py
- removed extraneous calls to _update_cutoff (now only called by _PCABase.train)
- added keep_var_fraction parameter and functionality