Github user debasish83 commented on the pull request:
https://github.com/apache/spark/pull/6213#issuecomment-107113056
@rezazadeh sure I will do that....Could you add a JIRA for 3 (Kernel
Clustering / PIC) so that we can add RBFKernel flow and implement PIC with
vector - matrix multiply for comparisons ? Also in general topK can decrease
the kernel size and is a cross validation parameter to see the degradation of
the clustering compared to full kernel which is always difficult to keep as the
rows grow...No such experiments have been done for PIC.
I am experimenting with gemv based optimization for SparseVector x
SparseMatrix and if I get further speedup compared to level 1 flow most likely
we will provide both options to the users in SPARK-4823.
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