An improved Chinese text multi-label classification method based on CNN

Abstract

Text multi-label classification technology can accurately and quickly classify text information into related categories or topics, and help people quickly locate the required content in massive information resources, which is of great significance in application. As the traditional classification algorithm is faced with the problems of low classification accuracy due to the low correlation of data labels, unbalanced label data and few short text feature words, this paper firstly performs hierarchical pre-processing on label data to transform multi-label classification into hierarchical text multi-classification. At the same time, an improved multi-label classification algorithm Multi-label Convolutional Neural Networks (ML-CNN) is proposed. Based on the TensorFlow framework, a CNN model is designed and different training models are constructed for each level of label classification. According to the number of classification levels, the output of the upper level label is stitched to the original input tail as the next level of input. Experiments on the description information of 500,000 Chinese products with labels, show that the improved algorithm will significantly improve the classification accuracy and the accuracy of each level can reach more than 88%, which proves the feasibility and effectiveness of the algorithm.

Multi-label classification algorithm for green certificate issued text based on blockchain technology

“…That is, after traversing the training set, the correlation between each label and each instance is found, and the vector i y corresponding to each green certificate issuing text label i y is obtained [9]. The value of the vector is 1 or 0, and when the value is 0, it means that they are not related; A value of 1 indicates that they are related [10].…”