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

[Paweł Matykiewicz]

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.


In hope for a prompt response from the e1071 developer team,
Thank you,
Regards,
--
Pawel Matykiewicz
http://www.neuron.m4u.pl
http://www.linkedin.com/in/pawelmatykiewicz