Yanbo Liang created SPARK-11918:
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Summary: WLS can not resolve some kinds of equation
Key: SPARK-11918
URL: https://issues.apache.org/jira/browse/SPARK-11918
Project: Spark
Issue Type: Bug
Components: ML
Reporter: Yanbo Liang
Weighted Least Squares (WLS) is one of the optimization method for solve Linear
Regression (when #feature < 4096). But if the label of the dataset is very ill
condition (such as 0-1 based label used for classification), the WLS may
failure.
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