[Rd] e1071 ver 1.5-27 and older - SVM bug report

[David Meyer]

Dear Pawel:

yes, this is a bug. Fixed in the next release.

Thanks

David

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Dear All:


I found a problem with the SVM internal cross-validation (CV) accuracy
estimation in the e1071 package.

File: Rsvm.c
Line: 120

Today, it is:

int j = rand()%(prob->l-i);

Should be:

int j = i + rand()%(prob->l-i);

The erroneous code doesn't shuffle objects. Instead, it "randomly"
moves objects from beginning to the end.