a novel kernel for text categorization

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	a novel kernel for text categorization
	Zhang Lujiang ; Hu Xiaohui
	2012
会议名称	2012 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2012
会议日期	May 25, 2012 - May 27, 2012
会议地点	Zhangjiajie, China
关键词	Algorithms Computer science Support vector machines
页码	186-190
中文摘要	In this paper we proposed a novel kernel for text categorization. This kernel is an inner product in the feature space generated by all word combinations of specified length. A word combination is a collection of different words co-occurring in the same sentence. The word combination of length k is weighted by the k-th root of the product of the inverse document frequencies (IDF) of its words. A computationally simple and efficient algorithm was proposed to calculate this kernel. We conducted experiments on the 20 Newsgroups dataset. This kernel achieves better performance than the classical word kernel and word-sequence kernel. We also assessed the impact of word combination length on performance. © 2012 IEEE.
英文摘要	In this paper we proposed a novel kernel for text categorization. This kernel is an inner product in the feature space generated by all word combinations of specified length. A word combination is a collection of different words co-occurring in the same sentence. The word combination of length k is weighted by the k-th root of the product of the inverse document frequencies (IDF) of its words. A computationally simple and efficient algorithm was proposed to calculate this kernel. We conducted experiments on the 20 Newsgroups dataset. This kernel achieves better performance than the classical word kernel and word-sequence kernel. We also assessed the impact of word combination length on performance. © 2012 IEEE.
收录类别	EI
会议主办者	IEEE Beijing Section; Hunan University of Humanities, Science and Technology; Tongji University; Xiamen University; Central South University
会议录	CSAE 2012 - Proceedings, 2012 IEEE International Conference on Computer Science and Automation Engineering
语种	英语
ISBN号	9781467300865
内容类型	会议论文
源URL	[http://ir.iscas.ac.cn/handle/311060/15762]
专题	软件研究所_软件所图书馆_会议论文
推荐引用方式 GB/T 7714	Zhang Lujiang,Hu Xiaohui. a novel kernel for text categorization[C]. 见:2012 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2012. Zhangjiajie, China. May 25, 2012 - May 27, 2012.