Title :
Some Remarks on the Paper "semQA: SPARQL with Idempotent Disjunction”
Author :
Arenas, Marcelo ; Gutierrez, Claudio ; Pérez, Jorge
Author_Institution :
Dept. of Comput. Sci., Pontificia Univ. Catolica de Chile, Santiago, Chile
fDate :
4/1/2011 12:00:00 AM
Abstract :
In the paper, “semQA: SPARQL with Idempotent Disjunction”, the authors study the RDF query language SPARQL. In particular, they claim that some of the results presented in are not correct. In this note, we refute the claims made in, and actually show that some of the formal results of are incorrect.
Keywords :
computational complexity; query languages; RDF query language; SPARQL query language; idempotent disjunction; resource description language; RDF; SPARQL; combined complexity.; evaluation problem; query language;
Journal_Title :
Knowledge and Data Engineering, IEEE Transactions on
DOI :
10.1109/TKDE.2010.139
