Summary: Filtering of XML Documents1
Dip. Matematica e Informatica,
Via delle Scienze 206, 33100 Udine, Italy.
DSIC, Universidad Polit´ecnica de Valencia,
Camino de Vera s/n, Apdo. 22012, 46071 Valencia, Spain.
Abstract-- In this paper, we present a simple, easy-to-use,
rewriting-like methodology for filtering information in an XML
document. Essentially, we define a specification language which
allows one to extract relevant data (positive filtering) as well as to
exclude useless and misleading contents (negative filtering) from
a set of XML documents according to some given criteria. We
believe that our methodology achieves the right tradeoff between
expressive power and simplicity of use, and thus it may be also
fruitfully employed by those users who typically prefer to avoid