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arXiv 0901.0358cs.IR
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半结构化文档分类的加权朴素贝叶斯模型

Weighted Naive Bayes Model for Semi-Structured Document Categorization

Pierre-François Marteau, Gilbas Ménier, Eugen Popovici

摘要:

本文的目标是半结构化数据的监督分类。一个正式的模型的基础上baidu分类的开发,同时解决的文档结构的分类任务的集成。我们定义了我们所谓的结构上下文发生的非结构化数据,我们推导出一个递归公式,其中参数被用来衡量结构元素相对于其他的贡献。这个形式化模型的一个简化版本实现进行文本文档分类实验。第一个结果表明,对于一个特设的加权策略,词出现的结构背景有一个显着的影响,分类结果相比,一个简单的多项式朴素贝叶斯分类器的性能。所提出的实现竞争的路透社-21578数据与SVM分类器相关联或不与结构组件的分裂。这些结果鼓励探索学习可接受的加权策略,特别是提升策略。

英文摘要:

The aim of this paper is the supervised classification of semi-structured data. A formal model based on bayesian classification is developed while addressing the integration of the document structure into classification tasks. We define what we call the structural context of occurrence for unstructured data, and we derive a recursive formulation in which parameters are used to weight the contribution of structural element relatively to the others. A simplified version of this formal model is implemented to carry out textual documents classification experiments. First results show, for a adhoc weighting strategy, that the structural context of word occurrences has a significant impact on classification results comparing to the performance of a simple multinomial naive Bayes classifier. The proposed implementation competes on the Reuters-21578 data with the SVM classifier associated or not with the splitting of structural components. These results encourage exploring the learning of acceptable weighting strategies for this model, in particular boosting strategies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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