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суббота, 11 октября 2014 г.

Scalable tensor factorization: Ext-RESCAL 0.7 is out

I've published Ext-RESCAL 0.7 on GitHub. The version has critical fixes in using proper sparse matrix types (SciPy module) for representing tensor slices. In my current experiments, I could handle a tensor (derived from DBpedia 3.9) of ~ 6 million x 6 million x 1000 dimensions, including over 180 million non-zero values, on ~ 70GB RAM. To the best of my knowledge, this is the largest dataset, for which RESCAL has been used so far.

RESCAL factorization (taken from [Nickel, 2013])

If you are interested in details of the problem, this software aims to solve, see the previous post on Machine Learning with Knowledge Graphs.

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