[SPARK-4362] [MLLIB] Make prediction probability available in NaiveBayesModel#6761

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acidghost wants to merge 9 commits intoapache:masterfrom

storecove:nb-posterior

Commits on Jun 11, 2015

get prediction probabilities of naive bayes classification
acidghost
committed

Commits on Jun 15, 2015

private NaiveBayesModel calculations & pattern matching fallback
Andrea Jemmett
committed

Commits on Jun 16, 2015

prediction probabilities calculation
acidghost
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better log probs scaling
acidghost
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prediction probs calculation
acidghost
committed

Commits on Jun 19, 2015

prediction probabilities as Vector
acidghost
committed
testing prediction probabilities are "sane"
acidghost
committed

Commits on Jun 21, 2015

initial tests for posteriors correctness
Andrea Jemmett
committed

Commits on Jun 22, 2015

better epsilon for sum to one
acidghost
committed