Maciej Kula created MAHOUT-1567:
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Summary: Add online sparse dictionary learning
Key: MAHOUT-1567
URL: https://issues.apache.org/jira/browse/MAHOUT-1567
Project: Mahout
Issue Type: Improvement
Components: Collaborative Filtering
Reporter: Maciej Kula
I have recently implemented a sparse online dictionary learning algorithm, with
an emphasis on learning very high-dimensional and very sparse dictionaries. It
is based on J. Mairal et al 'Online Dictionary Learning for Sparse Coding'
(http://www.di.ens.fr/willow/pdfs/icml09.pdf). It's an online variant of
low-rank matrix factorization, suitable for sparse binary matrices (such as
implicit feedback matrices).
I would be very happy to bring this up to the Mahout standard and contribute to
the main codebase --- is this something you would in principle be interested in
having?
The code (as well as some examples) are here:
https://github.com/maciejkula/dictionarylearning
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