64bit 运行libSVM错误的解决办法

pymqq

于 2014-07-18 10:29:05 发布

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本文解决了使用LibSVM时在64位系统上遇到的一个错误，该错误涉及到mxGetIr_700函数过时的问题。通过修改make文件并添加-largeArrayDims选项重新编译，成功解决了此问题。

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> ??? Error using ==> svmtrain
> Function "mxGetIr_700" is obsolete in file ".\compat32.cpp", line 282.
> (64-bit mex files using sparse matrices must be rebuilt with the "-largeArrayDims" option. See the
> R2006b release notes for more details.)

When I was using svmtrain in libsvm. I got this same problem. I write the software author (Chih-Jen Lin), he said that we need to modify make.m, add -largeArrayDims on 64-bit machines. So we need:

mex -O -largeArrayDims ...

now the make file is like this:

mex -O -largeArrayDims -c svm.cpp
mex -O -largeArrayDims -c svm_model_matlab.c
mex -O -largeArrayDims svmtrain.c svm.obj svm_model_matlab.obj
mex -O -largeArrayDims svmpredict.c svm.obj svm_model_matlab.obj
mex -O -largeArrayDims libsvmread.c
mex -O -largeArrayDims libsvmwrite.c

It fixed the problem. Enjoy~

转载自：http://blog.163.com/wang_pw/blog/static/24841039201012673615130