如何设置plotroc.py? How to set plotroc.py?

 

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Plotroc.py 是libsvm用于绘制roc曲线的一个工具，用法如下：

plotroc.py [-t kern_type][-c Cost][-g gamma][-m cache_size][-v cv_fold][-T testing_file] training_file

下载地址：http://ftp.cs.hacettepe.edu.tr/pub/dersler/BIL6XX/BIL_682_PR/libsvm-2.81/docs/libsvm%20tools.htm 。下载后存放在/libsvm/python下。

1、  接着需要做一下工作：

a)   Make the libsvm python interface

b)   Edit the path of gnuplot in plotroc.py in necessary

C)  Put plotroc.py into the python directory of libsvm package.

检查python，gnuplot的安装路径，设置plotroc.py中gnuplot的路径。

2、参考c:/libsvm/python/README.txt 按照libsvm/python目录下的readme文件

在虚拟dos下直接运行vcvars32.bat（C:/Program Files/Microsoft Visual Studio/Vc98/bin/）。此命令设置了VC++的环境变量。

C:/>"C:/Program Files/Microsoft Visual Studio/VC98/Bin/VCVARS32.BAT

Setting environment for using Microsoft Visual C++ tools.显示：

 

3、运行C:/libsvm>nmake -f Makefile.win clean all 4、C:/libsvm>nmake -f Makefile.win python.显示：

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0

Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

 

        cl.exe -nologo -O2 -EHsc -I. -D __WIN32__ -D _CRT_SECURE_NO_DEPRECATE -I

c:/python26/include -LD python/svmc_wrap.c svm.obj c:/python26/libs/python26.lib

 -Fewindows/python/svmc.pyd

svmc_wrap.c

   Creating library windows/python/svmc.lib and object windows/python/svmc.exp

LINK : warning LNK4098: defaultlib "LIBC" conflicts with use of other libs; use

/NODEFAULTLIB:library

a)         最后运行：C:/libsvm/python>python plotroc.py -t 2 -c 2 -g 0.5 -v 5 -T C:/libsvm/python/test.txt C:/libsvm/python/train.txt