Nowadays all Internet users use a search engine daily, performing a billion searches. The success of keyword search stems from what it does not require namely, a specialized query language or knowledge of the underlying structure of the data. Lack of standardization has resulted in contradictory results from different evaluations, and the copious discrepancies mix-up what advantages are proffer...

Conventional keyword search engines are restricted to a given data model and cannot easily adapt to unstructured, semi-structured or structured data. In this paper, we propose an efficient and adaptive keyword search method, called EASE, for indexing and querying large collections of heterogeneous data. To achieve high efficiency in processing keyword queries, we first model unstructured, semi-...