结合相关类别信息的大规模文本层次分类研究

深层分类模型是一种解决大规模文本层次分类问题的有效范式。本文基于该范式提出一种改进型模型,首先将一种新方法用于单独评价搜索阶段的效果;然后利用类别和文档信息共同选择候选类别;最后基于类中心训练Rocchio分类器,同时利用相关类别的分类结果确定最终类别。在ODP数据集上的实验表明,相对于最新型的深层分类方法,该模型具有一定优势。

Research on large-scale text hierarchies combining relevant category information

The deep classification model is an effective paradigm for solving large-scale classification problems.An improved model was proposed based on the paradigm.First,a new method was used to evaluate the effectiveness of search stage independently.Second,the category and document information were collectively used to select category candidates.Finally,the classifier of Rocchio was trained based on the class centroid,and at the same time the information of related categories was used to determine the final categ...