A Robust Parser for the Web Query Language Xcerpt (2009)
Oettingenstraße D– München, Clemens Ley, Betreuer Prof, Dr. François Bry
This project thesis investigates error handling for the Web Query Language Xcerpt (cf.
El movimiento, juego y deporte son cada vez más reconocidos como herramientas eficaces y eficientes en las áreas de la educación (tanto formal como informal), la integración de diferentes grupos...
Table of Contents Foundations of Rule-Based Query Answering........................ 1 (2008)
François Bry, Norbert Eisinger, Thomas Eiter, Tim Furche, Georg Gottlob, Clemens Ley, ...
Chaining with Memory in Xcerpt (2008)
Benedikt Linse, Norbert Eisinger, Clemens Ley, Tim Furche, François Bry
Moving from single-rule Xcerpt programs as described in previous deliverables to full Xcerpt programs requires to address the issue of efficient rule chaining. In this deliverable, we first survey...
RDFLog: It’s like Datalog for RDF (2008)
François Bry, Tim Furche, Clemens Ley, Benedikt Linse, Bruno Marnette
Abstract. RDF data is set apart from relational or XML data by its support of rich existential information in the form of blank nodes. Where in SQL databases null values are scoped over a single...
Foundations of rule-based query answering (2007)
François Bry, Norbert Eisinger, Thomas Eiter, Tim Furche, Georg Gottlob, Clemens Ley, ...
Abstract. This survey article introduces into the essential concepts and methods underlying rule-based query languages. It covers four complementary areas: declarative semantics based on adaptations...
Xcerpt 1.0 Prototype and Beyond (2007)
Uwe Aßmann, Sacha Berger, François Bry, Hatice Serap Durmaz, Tim Furche, Clemens Ley, ...
Web query languages promise convenient and efficient access to Web data such as XML, RDF, or Topic Maps. Xcerpt is one such Web query language with strong emphasis on novel high-level constructs for...