中文摘要：

新兴话题检测是社交网络研究的热点问题之一。在线社交网络特别是微博的开放性,给话题的流行和爆发提供了前所未有的便利条件。新兴话题是即将流行或爆发的话题,往往伴随着重大的事件或新闻的发生,会产生重大的社会影响,如何在早期识别此类话题,是新兴话题检测研究的主要内容。该文回顾了近年来在新兴话题检测方面的主要进展,分析了新兴话题检测领域面临的挑战,阐述了相关的概念、方法和理论,重点从内容突发特征和信息传播模型两个方面对影响新兴话题检测的方法进行了分析和讨论,并对新兴话题检测的前景做了展望。

英文摘要：

Emerging topic detection is one of the major research focus in Social Network Analysis. The openness of social networks, microblog in particular, provides unprecedented favorable conditions on which the topics might rage and outbreak. The emerging topics are often accompanied by big news or events, which are about to outbreak and have a significant social impact. How to identify these topics in the early stages is the major research content of the emerging topic detection. The main developments in the field of the emerging topic detection in the recent years are reviewed and the relevant concepts, methods and theory are elaborated. The methods of the emerging topic detection are analyzed and discussed form the perspective of the content bursty feature and information diffusion models. Finally we conclude the paper with an exploration of future research directions.