Aggregated Search

To support broad queries or ambiguous information needs, providing diverse search results to users has become increasingly necessary. Aggregated search attempts to achieve diversity by presenting search results from different information sources, so-called verticals (image, video, blog, news, etc), in addition to the standard web results, on one result page. This comes in contrast with the common search paradigm, where users are provided with a list of information sources, which they have to examine in turn to find relevant content. All major search engines are now performing some levels of aggregated search. This chapter provides an overview of the current developments in aggregated

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