A content search method for security topics in microblog based on deep reinforcement learning

Abstract

Traditional methods treat the search problem as a process of selecting and ranking sequential documents. The methods have been proved effective and are widely used in the web search domain. However, due to the complexity and particularity of microblog text contents, the classical methods are rarely used microblog searches for specific topics. Focusing on the issue of searching for specific topics in microblog content, we present a microblog search method for security topics based on deep reinforcement learning by modeling the microblog search for specific topics as a continuous-state Markov decision process. We also design a novel deep Q network to evaluate the relevance of microblog content based on the target topic. We adopt reinforcement learning to solve the microblog search problem using an intelligent strategy and evaluate content relevance through deep learning. Experiments conducted on a real-world dataset show that our approach outperforms the selected baseline methods.