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Temporal Information Retrieval is an emerging research area in the field of Information Retrieval. Due to the immense amount of data in the WWW, and because the contents of documents are strongly time-dependent, it is very tough for the user to retrieve the relevant documents. Traditional Information Retrieval approaches based on topic similarity alone is not sufficient for the search in temporal document collections. The time dimension available in the documents should be incorporated with document ranking for efficient retrieval. This survey gives an introduction to Temporal Information Retrieval and explores the different time-aware retrieval methods and temporal ranking methods for specific types of time-sensitive queries.
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