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网络环境下中文情感倾向的分类方法 被引量:6
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作者 金聪 金平 《语言文字应用》 CSSCI 北大核心 2008年第2期139-144,共6页
论文从中英文语言差异的角度出发,针对语义倾向方法在中文应用中暴露出来的问题,提出了具体的应用于中文的改进算法。在实验中,运用基金测试文档进行实测以验证改进算法的有效性。实验表明,改进后语义倾向方法在应用于网络环境下中文文... 论文从中英文语言差异的角度出发,针对语义倾向方法在中文应用中暴露出来的问题,提出了具体的应用于中文的改进算法。在实验中,运用基金测试文档进行实测以验证改进算法的有效性。实验表明,改进后语义倾向方法在应用于网络环境下中文文本情感倾向分类中具有理想的性能,并具有不需要大量训练样本、对领域知识有较弱的依赖性等特点,展示出良好的应用前景。 展开更多
关键词 中文情感分类 评价文本分类 语义分析方法 语义倾向
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Accurate performance estimators for information retrieval based on span bound of support vector machines
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作者 于水 叶允明 马范援 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第1期113-117,共5页
Support vector machines have met with significant success in the information retrieval field, especially in handling text classification tasks. Although various performance estimators for SVMs have been proposed, thes... Support vector machines have met with significant success in the information retrieval field, especially in handling text classification tasks. Although various performance estimators for SVMs have been proposed, these only focus on accuracy which is based on the leave-one-out cross validation procedure. Information-retrieval-related performance measures are always neglected in a kernel learning methodology. In this paper, we have proposed a set of information-retrieval-oriented performance estimators for SVMs, which are based on the span bound of the leave-one-out procedure. Experiments have proven that our proposed estimators are both effective and stable. 展开更多
关键词 information retrieval performance estimator span bound support vector machines
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