Beyond independent relevance: methods and evaluation metrics for subtopic retrieval
Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
Understanding temporal query dynamics
Proceedings of the fourth ACM international conference on Web search and data mining
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Real-time news and social media quickly reflect large-scale phenomena and events. As users become exposed to this information, time plays a central role in prompting both information authorship and seeking activities. The objective of this research is to develop a retrieval system which can anticipate a user's likely temporal intent(s), considering recent or ongoing real-world events. Such a system should not only provide recent news when relevant, but also higher rank non-timestamped or even older documents which are temporally pertinent as they cover aspects related to recent event topics. Key challenges to be addressed in this work include: a suitable source and method for event detection and tracking, an intent-aware ranking approach and an evaluation methodology.