Matrix get/set causes allocation (?!)
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Key: MAHOUT-497
URL: https://issues.apache.org/jira/browse/MAHOUT-497
Project: Mahout
Issue Type: Bug
Reporter: Ted Dunning
Matrix get and set check the array bounds. But checking the array bounds calls
size. But size allocates a small integer
array.
This is evil and KILLs performance.
The first fix is to avoid this in SGD based classifiers. Second will be a real
change to the matrix routines to avoid the allocation.
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