Shuo Xiang created SPARK-5116:
---------------------------------
Summary: Add extractor for SparseVector and DenseVector in MLlib
Key: SPARK-5116
URL: https://issues.apache.org/jira/browse/SPARK-5116
Project: Spark
Issue Type: New Feature
Components: MLlib
Reporter: Shuo Xiang
Priority: Minor
Add extractor for SparseVector and DenseVector in MLlib to save some code while
performing pattern matching on Vectors. For example, previously we need to use:
vec match {
case dv: DenseVector =>
val values = dv.values
...
case sv: SparseVector =>
val indices = sv.indices
val values = sv.values
val size = sv.size
...
}
with extractor it is:
vec match {
case DenseVector(values) =>
...
case SparseVector(size, indices, values) =>
...
}
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