We study visibly pushdown automata (VPA) models for expressing and evaluating queries, expressed using MSO formulas, on words with a nesting structure (like XML documents). We deļ...
We present a system that enables flexible and efficient phrase matching in XML documents. Since XML allows structured and unstructured information to be interleaved, phrase matchi...
Keyword search enables web users to easily access XML data without the need to learn a structured query language and to study possibly complex data schemas. Existing work has addr...
In an XML document a considerable fraction consists of markup, that is, begin and end-element tags describing the documentās tree structure. XML compression tools such as XMill ...
Abstract. Due to the growing interest in XML security, various access control schemes have been proposed recently. However, little eļ¬ort has been put forth to facilitate a unifor...