Information retrieval is the science concerned with the effective and efficient retrieval of documents starting from their semantic content. It is employed to f

This two volume set LNCS 9827 and LNCS 9828 constitutes the refereed proceedings of the 27th International Conference on Database and Expert Systems Application

Web search has significantly evolved in recent years. For many years, web search engines such as Google and Yahoo! were only providing search service over text

A comprehensive summary of the research in aggregated search. It also surveys different evaluation methodologies for aggregated search and discusses prior user

Documents usually have a content and a structure. The content refers to the text of the document, whereas the structure refers to how a document is logically or