Information Retrieval in Context

The situations in which we search form a context: a complex set of variables describing our intentions, our personal characteristics, the data and systems available for searching, and our physical, social and organizational environments. Different contexts can mean that we want search systems to behave differently or to offer different responses. Creating search systems and search interfaces to be contextually sensitive raises many research challenges: what aspects of a searcher’s context are useful to know about, how can we model context for use by retrieval systems and how do we evaluate search systems in context? In this chapter we will look at why differences in context can affect how we want search systems to operate and ways that we can use contextual information to help search systems behave more intelligently to our changing context. We will examine some new types of system that use different types of user context to learn about users, to adapt their response to different users or to help us make better search decisions.

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