基于标签语义注意力的多标签文本分类

自大数据蓬勃发展以来,多标签分类一直是令人关注的重要问题,在现实生活中有许多实际应用,如文本分类、图像识别、视频注释、多媒体信息检索等.传统的多标签文本分类算法将标签视为没有语义信息的符号,然而,在许多情况下,文本的标签是具有特定语义的,标签的语义信息和文档的内容信息是有对应关系的,为了建立两者之间的联系并加以利用,提出了一种基于标签语义注意力的多标签文本分类(LAbel Semantic Attention Multi-label Classification,简称LASA)方法,依赖于文档的文本和对应的标签,在文档和标签之间共享单词表示.对于文档嵌入,使用双向长短时记忆(bi-directional long short-term memory,简称Bi-LSTM)获取每个单词的隐表示,通过使用标签语义注意力机制获得文档中每个单词的权重,从而考虑到每个单词对当前标签的重要性.另外,标签在语义空间里往往是相互关联的,使用标签的语义信息同时也考虑了标签的相关性.在标准多标签文本分类的数据集上得到的实验结果表明,所提出的方法能够有效地捕获重要的单词,并且其性能优于当前先进的多标签文本分类算法.

Multi-label Text Classification Method Based on Label Semantic Information

Multi-label classification has been a practical and important problem since the boom of big data. There are many practical applications, such as text classification, image recognition, video annotation, multimedia information retrieval, etc. Traditional multi-label text classification algorithms regard labels as symbols without inherent semantics. However, in many cases these labels have specific semantics, and the semantic information of labels have corresponding relationship with the content information of the documents, in order to establish the connection between them and make use of them, We proposes a LAbel Semantic Attention Multi-label Classification(LASA) method based on label semantic attention. We rely on the texts and labels of the document to share the word representation between the texts and labels. For documents embedding, we use Bi-directional Long Short-term Memory (Bi-LSTM) to obtain the hidden representation of each word. The weight of each word in the document is obtained by using the semantic representation of the label, thus taking into account the importance of each word to the current label. In addition, labels are often related to each other in the semantic space, by using the semantic information of the labels, the correlation of the labels is considered to improve the classification performance of the model. The experimental results on the standard multi-label classification datasets show that th proposed method can effectively capture important words, and its performance is better than the existing state-of-the-art multi-label classification algorithms.