Weka LibSVM (WLSVM)

最新推荐文章于 2024-10-30 13:00:44 发布

原创最新推荐文章于 2024-10-30 13:00:44 发布 · 452 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#数据结构与算法 #java

SVM 专栏收录该内容

13 篇文章

订阅专栏

WLSVM将LibSVM的功能整合到了Weka环境中，结合了两者的优势，支持多种SVM方法如C-SVC、nu-SVC等，并提供了直观的GUI界面及丰富的统计指标。用户可以通过简单的配置选项来选择不同的核函数和支持向量机类型。

Weka LibSVM (WLSVM):
Integrating LibSVM into Weka Environment

Weka and LibSVM are two efficient software tools for building SVM classifiers. Each one of these two tools has its points of strength and weakness. Weka has a GUI and produces many useful statistics (e.g. confusion matrix, precision, recall, F-measure, and ROC scores). LibSVM runs much faster than Weka SMO and supports several SVM methods (e.g. One-class SVM, nu-SVM, and R-SVM). Weka LibSVM (WLSVM) combines the merits of the two tools. WLSVM can be viewed as an implementation of the LibSVM running under Weka environment.

How To Use

Download and unzip the file wlsvm.zip
Add the jars libsvm.jar and wlsvm.jar to your java project
Use WLSVM as any other weka classifier

Notes: Your java project should also have weka.jar.

WLSVM Options

-S  set type of SVM (default 0)	 
		 0 = C-SVC
		 1 = nu-SVC
		 2 = one-class SVM
		 3 = epsilon-SVR
		 4 = nu-SVR
-K  set type of kernel function (default 2)	 
		 0 = linear: u'*v
		 1 = polynomial: (gamma*u'*v + coef0)^degree
		 2 = radial basis function: exp(-gamma*|u-v|^2)
		 3 = sigmoid: tanh(gamma*u'*v + coef0)
-D  set degree in kernel function (default 3)	 
-G  set gamma in kernel function (default 1/k)	 
-R  set coef0 in kernel function (default 0)	 
-C  set the parameter C of C-SVC, epsilon-SVR, and nu-SVR (default 1)	 
-N  set the parameter nu of nu-SVC, one-class SVM, and nu-SVR (default 0.5)
-Z  whether to normalize input data, 0 or 1 (default 0)
-P  set the epsilon in loss function of epsilon-SVR (default 0.1)
-M  set cache memory size in MB (default 40)
-E  set tolerance of termination criterion (default 0.001)
-H  whether to use the shrinking heuristics, 0 or 1 (default 1)
-W  set the parameters C of class i to weight[i]*C, for C-SVC (default 1)

Citation

If you would like to cite WLSVM, cite the following URL:
Yasser EL-Manzalawy and Vasant Honavar, WLSVM : Integrating LibSVM into Weka Environment, 2005. Software available at http://www.cs.iastate.edu/~yasser/wlsvm

The bibtex format is as follows

@Manual{yh05,
  author =	 {Yasser EL-Manzalawy and Vasant Honavar},
  title =	 {{WLSVM}: Integrating LibSVM into Weka Environment},
  year =	 {2005},
  note =	 {Software available at \url{http://www.cs.iastate.edu/~yasser/wlsvm}}
}