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中文摘要：
【目的】统计近5年相关会议集收录的论文，分析信息检索的研究热点与发展趋势。【文献范围】检索2012年-2016年ACL、ACMMM、ICML、KDD、SIGIR等5个信息检索领域的相关会议集收录的论文。【方法】使用爬虫软件获取5个相关会议收录的论文的摘要和关键词，并利用分词工具对其处理，进行统计分析和文献研究。【结果】发现目前信息检索中移动搜索是主流；检索模型不断优化；注重过滤和推荐；与人工智能关系密切，用户隐私以及医疗健康也是信息检索重点关注的内容。【局限】仅采集论文的摘要和关键词数据，未进行全文内容以及引文的分析。【结论】反映目前信息检索的大致发展状况，为其他学者开展新的研究提供借鉴和参考。
英文摘要：
[Objeetive] This paper reviews conference papers on information retrieval, aiming to identify the research hotspots and development trends in this field. [Coverage] Papers published by ACL, ACMMM, ICML, KDD, and SIGIR from 2012 to 2016. [Methods] We first collected these papers＇ abstracts and keywords to process them with word segmentation package. Then, we analyzed these data with statistic tests. [Results] We found that mobile search was the most popular topic and the information retrieval models had been optimized. Filtering and recommending received more attention from the researchers. Information retrieval studies established close ties with artificial intelligence. User＇s privacy protection and health information retrieval were also popular. [Limitations] Only collected the abstracts and keywords. More research is needed to study the full texts and citations. [Conclusions] This paper presents the latest developments of information retrieval research.
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