linkedin / photon-ml

A scalable machine learning library on Apache Spark
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Construct projectors incorporating with prior models #462

Closed yunboouyang closed 4 years ago

yunboouyang commented 4 years ago

When constructing subspace linear projectors, prior model's active indices should be union with data's active indices, otherwise some of prior model's coefficients will be dropped in the training process. An union step is added in this PR.