Web Search Using Summarization on Clustered Web Documents Retrieved by User Queries

摘要

Web search engines, such as Google, Bing, and Yahoo!, rank the set of documents S retrieved in response to a user query and represent each document D in S using a title and a snippet, which serves as an abstract of D. Snippets, however, are not as useful as they are designed for, i.e., assisting its users to quickly identify results of interest. These snippets are inadequate in providing distinct information and capture the main contents of the corresponding documents. Moreover, when the intended information need specified in a search query is ambiguous, it is very difficult, if not impossible, for a search engine to identify precisely the set of documents that satisfy the user's intended request without requiring additional information. Furthermore, a document title is not always a good indicator of the content of the corresponding document either. All of these design problems can be solved by our proposed query-based summarizer, called QSum. QSum generates a concise/comprehensive summary for each cluster of documents retrieved in response to a user query, which saves the user's time and effort in searching for specific information of interest by skipping the step to browse through the retrieved documents one by one. Experimental results show that QSum is effective and efficient in creating a high-quality summary for each cluster to enhance web search.