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Commit 331f0b10 authored by Meihua Wu's avatar Meihua Wu Committed by DB Tsai
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[SPARK-9642] [ML] LinearRegression should supported weighted data 

In many modeling application, data points are not necessarily sampled with equal probabilities. Linear regression should support weighting which account the over or under sampling.

work in progress.

Author: Meihua Wu <meihuawu@umich.edu>

Closes #8631 from rotationsymmetry/SPARK-9642.
parent ca9fe540
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