如何在LIBSVM中保存MATLAB训练的模型

How to save matlab trained model in libsvm

本文关键字：模型 MATLAB 保存 LIBSVM      更新时间：2023-10-16

我是libsvm和matlab的新手。我已经从网站下载了LIBSVM 3.17，并使用MATLAB培训了我的数据集。我想保存文件，然后使用了SVM_SAVEMODEL.C，该文件拒绝在MATLAB中编译。这是我收到的信息

mex svm_savemodel.c
Creating library C:UsersmarkAppDataLocalTempmex_zcr67jtemplib.x and object C:UsersmarkAppDataLocalTempmex_zcr67jtemplib.exp 
svm_savemodel.obj : error LNK2019: unresolved external symbol _svm_free_and_destroy_model referenced in function _mexFunction 
svm_savemodel.obj : error LNK2019: unresolved external symbol _svm_save_model referenced in function _mexFunction 
svm_savemodel.obj : error LNK2019: unresolved external symbol _matlab_matrix_to_model referenced in function _mexFunction 
svm_savemodel.mexw32 : fatal error LNK1120: 3 unresolved externals 
C:PROGRA~1MATLABR2011BBINMEX.PL: Error: Link of 'svm_savemodel.mexw32' failed. 
Error using mex (line 206)
Unable to complete successfully.

那么谁能帮助我解决这个问题？我包括svm.h，mex.h，svm_model_matlab.h，但它拒绝了....

这就是我所做的

    >> mex -setup
Welcome to mex -setup.  This utility will help you set up  
a default compiler.  For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2011b/win32.html 
Please choose your compiler for building MEX-files: 
Would you like mex to locate installed compilers [y]/n? y
Select a compiler: 
[1] Lcc-win32 C 2.4.1 in C:PROGRA~1MATLABR2011bsyslcc 
[2] Microsoft Visual C++ 2010 in C:Program FilesMicrosoft Visual Studio 10.0 
[0] None 
Compiler: 2
Please verify your choices: 
Compiler: Microsoft Visual C++ 2010  
Location: C:Program FilesMicrosoft Visual Studio 10.0 
Are these correct [y]/n? y
*************************************************************************** 
  Warning: MEX-files generated using Microsoft Visual C++ 2010 require 
           that Microsoft Visual Studio 2010 run-time libraries be  
           available on the computer they are run on. 
           If you plan to redistribute your MEX-files to other MATLAB 
           users, be sure that they have the run-time libraries. 
*************************************************************************** 

Trying to update options file: C:UsersmichaelAppDataRoamingMathWorksMATLABR2011bmexopts.bat 
From template:              C:PROGRA~1MATLABR2011bbinwin32mexoptsmsvc100opts.bat 
Done . . . 
************************************************************************** 
  Warning: The MATLAB C and Fortran API has changed to support MATLAB 
           variables with more than 2^32-1 elements.  In the near future 
           you will be required to update your code to utilize the new 
           API. You can find more information about this at: 
           http://www.mathworks.com/support/solutions/en/data/1-5C27B9/?solution=1-5C27B9 
           Building with the -largeArrayDims option enables the new API. 
************************************************************************** 
>> cd('C:libsvm-3.17libsvm-3.17matlab');
>> make
>> mex svm_savemodel.c
   Creating library C:UsersmichaelAppDataLocalTempmex_coX2K1templib.x and object C:UsersmichaelAppDataLocalTempmex_coX2K1templib.exp 
svm_savemodel.obj : error LNK2019: unresolved external symbol _svm_free_and_destroy_model referenced in function _mexFunction 
svm_savemodel.obj : error LNK2019: unresolved external symbol _svm_save_model referenced in function _mexFunction 
svm_savemodel.obj : error LNK2019: unresolved external symbol _matlab_matrix_to_model referenced in function _mexFunction 
svm_savemodel.mexw32 : fatal error LNK1120: 3 unresolved externals 
  C:PROGRA~1MATLABR2011BBINMEX.PL: Error: Link of 'svm_savemodel.mexw32' failed. 
Error using mex (line 206)
Unable to complete successfully.
>>

将其添加到您的make.m文件（您可以将它们添加到if和else Part）：

mex CFLAGS="$CFLAGS -std=c99" -largeArrayDims svm_savemodel.c ../svm.cpp svm_model_matlab.c
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