From: eaudex <eaudex@16e7d947-dcc2-db11-b54a-0017319806e7>
Date: Sun, 4 Oct 2009 04:42:33 +0000 (+0000)
Subject: Set -B -1 as default (no bias term included)
X-Git-Tag: v150~1
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fdb121310685f4b1fa8303a1c9af7916a1a90dae;p=liblinear

Set -B -1 as default (no bias term included)
---

diff --git a/README b/README
index 91aee51..8c3d3a1 100644
--- a/README
+++ b/README
@@ -114,7 +114,7 @@ options:
         -s 5 and 6
                 |f'(w)|_inf <= eps*min(pos,neg)/l*|f'(w0)|_inf,
         where f is the primal function (default 0.01)
--B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default 1)
+-B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default -1)
 -wi weight: weights adjust the parameter C of different classes (see README for details)
 -v n: n-fold cross validation mode
 -q : quiet mode (no outputs)
diff --git a/matlab/train.c b/matlab/train.c
index 56e325b..2a97feb 100644
--- a/matlab/train.c
+++ b/matlab/train.c
@@ -43,7 +43,7 @@ void exit_with_help()
 	"	-s 5 and 6\n"
 	"		|f'(w)|_inf <= eps*min(pos,neg)/l*|f'(w0)|_inf,\n"
 	"		where f is the primal function (default 0.01)\n"
-	"-B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default 1)\n"
+	"-B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default -1)\n"
 	"-wi weight: weights adjust the parameter C of different classes (see README for details)\n"
 	"-v n: n-fold cross validation mode\n"
 	"-q : quiet mode (no outputs)\n"
@@ -97,7 +97,7 @@ int parse_command_line(int nrhs, const mxArray *prhs[], char *model_file_name)
 	param.weight = NULL;
 	cross_validation_flag = 0;
 	col_format_flag = 0;
-	bias = 1;
+	bias = -1;
 
 	// train loaded only once under matlab
 	if(liblinear_default_print_string == NULL)
diff --git a/train.c b/train.c
index cc16774..f3e37db 100644
--- a/train.c
+++ b/train.c
@@ -34,7 +34,7 @@ void exit_with_help()
 	"	-s 5 and 6\n"
 	"		|f'(w)|_inf <= eps*min(pos,neg)/l*|f'(w0)|_inf,\n"
 	"		where f is the primal function (default 0.01)\n"
-	"-B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default 1)\n"
+	"-B bias : if bias >= 0, instance x becomes [x; bias]; if < 0, no bias term added (default -1)\n"
 	"-wi weight: weights adjust the parameter C of different classes (see README for details)\n"
 	"-v n: n-fold cross validation mode\n"
 	"-q : quiet mode (no outputs)\n"
@@ -144,7 +144,7 @@ void parse_command_line(int argc, char **argv, char *input_file_name, char *mode
 	param.weight_label = NULL;
 	param.weight = NULL;
 	flag_cross_validation = 0;
-	bias = 1;
+	bias = -1;
 
 	// parse options
 	for(i=1;i<argc;i++)