document: GalaTex : a conformant implementation of the XQuery full-text language We describe GalaTex , the first complete implementation of XQuery Full-Text , a W3C specification that extends XPath 2.0 and XQuery 1.0 with full-text search . XQuery Full-Text provides composable full-text search primitives such as keyword search , Boolean queries , and keyword-distance predicates . GalaTex is intended to serve as a reference implementation for XQuery Full-Text and as a platform for addressing new research problems such as scoring full-text query results , optimizing XML queries over both structure and text , and evaluating top-k queries on scored results . GalaTex is an all-XQuery implementation initially focused on completeness and conformance rather than on efficiency . We describe its implementation on top of Galax , a complete XQuery implementation .
doc_bio_tags: O O O O O O O B O O O O O O O O O O O B O O O O O O O O O O B O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O