SVM TFV

TFV �SVM
*
a.bagheri@ec.iut.ac.ir
saraee@cc.iut.ac.ir
montazer@cc.iut.ac.ir
Support Vector
Term Frequency Variance
support vector machine
Machine
:
*
4
Classification
1
E-Mail
Support Vector Machine
d
f
L
D
D
tf
′
′
1
Clustering
2
TFV
Term
SVM
Frequency Variance
TFV
(SVM) Support Vector Machine
TFV
TFV
C = {c1,....ck }
f
f
Document
[٥]
TFV
Document Frequency
TFV
Frequency
[۱]
Document Frequency
TFV
Document Frequency TFV
[ ٦ ] ،[ ۱ ]
SVM
SVM
support vector
[٦]
1
Term Frequency Variance
3
�
h
SVM
h
SVM
h
-
radial basis
SVM
D(x)
x
h
X
4
kernel
′
q
C kernel
H
′
radial basis
kernel
′
′
SVM
-
Accuracy
[ ]
Accuracy
Precision
[ ]
Recall
Accuracy
Recall
5
Precision
ci
ci
fn
tp
tn
fp
ci
ci
Recall Precision
Precision
Recall
F
Precision
Recall
F
[
][ ][ ][ ][ ]
20-NewsGroups
6
tab
TFV
Polynomial
Kernel
SVM
Kernel
SVM
12
10
8
‫ ميزان خطا‬6
4
2
0
0
-
20
‫درصد کاهش فضای خصيصه‬
40
SVM
SVM
TFV
7
gamma
.
Accuracy
F_measure
Recall
Precision
Precision
Recall
SVM
Recall
[ ]
[ ]
Binary TF TF-IDF
Polynomial
Kernel
SVM
Recall Precision
Recall Precision
[ ]
Information Gain
[ ]
Recall Precision
Recall Precision
Recall Precision
SVM
SVM
SVM
8
SVM
SVM
SVM
SVM
SVM
[1] Yan Zhan, Hao Chen, Su-fang Zhang, Mei Zheng, “Chinese Text Categorization Study Based on Feature
Weight Learning”, Proceedings of the Eighth International Conference on Machine Learning and
Cybernetics, Baoding, 2009.
[2] Fatimah Wulandini, Anto Satriyo Nugroho, “Text Classification Using Support Vector Machine for
Webmining Based Spatio Temporal Analysis of the Spread of Tropical Diseases”, International Conference
on Rural Information and Communication Technology, Indonesia, 2009.
[3] O. Chapelle and S. S. Keerthi, “Multi-class feature selection�with� support vector�machines”, Joint
Statistical Meeting) conference (JSM), 2008.
[4] Jason D. M. Rennie and Ryan Rifkin, “Improving Multiclass Text Classification with the Support Vector
Machine”, MIT Artificial Intelligence Laboratory, 2001.
[5] Tang, B., Shepherd, M., Milios, E. and M.I. Heywood, “Comparing and Combining Dimension Reduction
Techniques for Efficient Text Clustering”, International Workshop on Feature Selection for Data Mining Interfacing Machine Learning and Statistics in conjunction with 2005 SIAM International Conference on
Data Mining, 2005.
[6] R. Cooley, “Classification of News Stories Using Support Vector Machines”, International Joint
Conferences on Artificial Intelligence, IJCAI Workshop Text Mining, 1999.
[7] Fars News Agency, “http://www.farsnews.com”, Accessed on August 2008.
[8] Islamic Republic News Agency, “http://www.irna.com”, Accessed on August 2008.
[9] Mehr News Agency, “http://www.mehrnews.com”, Accessed on August 2008.
[10] Iran Students News Agency, “http://www.sharifnews.com”, Accessed on August 2008.
[11] Iran Sport News Network, “http://www.iransport.net”. Accessed on August 2008.
9