LI Guobao created SYSTEMML-2368:
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Summary: Extend scheme Overlap_Reshuffle
Key: SYSTEMML-2368
URL: https://issues.apache.org/jira/browse/SYSTEMML-2368
Project: SystemML
Issue Type: Sub-task
Reporter: LI Guobao
Assignee: LI Guobao
It aims to extend the scheme of data partition.
* Disjoint_Random: for each worker, use a permutation multiply {{P[beg:end,]
%*% X}}, where P is constructed for example with
{{P=table(seq(1,nrow(X),sample(nrow(X), nrow(X))))}}, i.e., sampling without
replacement to ensure disjointness.
* Overlap_Reshuffle: Similar to the above, except you create a new permutation
matrix for each worker and without the indexing on P.
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