XQL and Proximal Nodes
Ricardo Baeza-Yates and Gonzalo Navarro
Despite that several models to structure text documents and to query on this
structure have been proposed in the past, a standard has emerged only relatively
recently with the introduction of XML and its proposed query language XQL, on
which we focus in this paper. Although there exist some implementations of
XQL, efficiency of the query engine is still a problem. We show in this paper
that an already existing model, {em Proximal Nodes}, which was defined with the
goal of efficiency in mind, can be used as an efficient query engine behind an
XQL front-end.