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Keyword SearchIntegration on Demand
Traditionally, data integration is used to either build applications (whether Web-based or more traditional) that provide cross-source information access or to build ad hoc query interfaces for data exploration by relatively sophisticated users. However, a more recent focus has been to enable “average” (non-database-expert) users to pose ad hoc queries over structured, integrated data via a familiar interface: keyword search. However, keyword search in this model is a good deal more complex than in a typical information retrieval system or search engine: it does not merely match against single documents or objects. Intuitively, the set of keyword terms describes a set of concepts in which the user is interested. ...
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