时态信息检索研究综述

[Purpose] This study aims to summarize the research status of temporal information retrieval (T-IR) and to provide theoretical basis for the study of the relevant scholars to better grasp the T-IR problems. [Coverage] We reviewd Chinese and English literatures on the extracting temporal information from document, identifying temporal information in queries and termporal ranking model from the the filed of Temporal Information Retrieval. [Methods] Based on method of literature survey and methods of inducting and summarizing, a survey of the existing literature on temporal information retrieval was presented from the following four aspects: extracting temporal information from document, identifying temporal information in queries and temporal ranking model. [Results] Latest advances and limitations of the research on the temporal information retrieval were gained. [Limitation] This paper didn’t review the document crawling, document index and corresponding application of Temporal information retrieval. [Conclusion] The problems and challenges existing in temporal information retrieval are as follows: little related work existing in China while most of related work existing in foreign countries the lack of methods of data collection and data indexing reflecting dynamic characteristics of real network; Ignorance of the important role of the entity and event represent time information when identify the focus time of document; lack of the predicting intent for non-periodic queries and the improvement of reproducibility of temporal information retrieval model experiment to be needed.