svmfusvmconstants.cpp

This is SvmFu, a package for training and testing support vector machines (SVMs). It s written in C

//     This is a part of the SvmFu library, a library for training
//     Support Vector Machines.  Copyright (C) 2000 rif and MIT
//
//     Contact: [e-mail]

//     This program is free software; you can redistribute it and/or
//     modify it under the terms of the GNU General Public License as
//     published by the Free Software Foundation; either version 2 of
//     the License, or (at your option) any later version.

//     This program is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.

//     You should have received a copy of the GNU General Public
//     License along with this program; if not, write to the Free
//     Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
//     MA 02111-1307 USA

#include "SvmFuSvmConstants.h"

const char * SVM_VERSION = "3.0";

const int SVM_LARGEOPT_MIN_TOTAL_SIZE = 2;
const int SVM_LARGEOPT_MIN_TO_ADD = 100;
const int SVM_LARGEOPT_DEFAULT_CHUNK_SIZE = 3000;
const int SVM_LARGEOPT_DEFAULT_CHECKS_BEFORE_SHRINKING = 10000000;
const double SVM_LARGEOPT_DEFAULT_NON_SHRINK_PROPORTION = .1;

// We will attempt to keep this many non-USVs in the working set, in
// order to avoid "churning" --- the goal is to keep points which are
// not currently violating the KKT conditions, but are very close to
// doing so.  MIN_TO_ADD takes precedence over this.
const int SVM_LARGEOPT_NON_USVS_TO_KEEP = 200;

// Number of points to keep checking after we've already found at least
// one, before giving up.
const int SVM_LARGEOPT_MAX_NONFIND_CHECKS = 200;

// This will cause up front allocation of a vector of this many pointers
// to doubles.  For every chunk we actually use, we'll need chunkSize
// space, which will be a problem WAY before this vector is.
const int SVM_LARGEOPT_MAX_CHUNKS = 10000;

// How often we "zero and reset" the update helper vector.
const int SVM_RESET_UPDATES_HOW_OFTEN = 429000000;