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Some Remarks on the Paper "semQA: SPARQL with Idempotent Disjunction”

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3 Author(s)
Arenas, M. ; Dept. of Comput. Sci., Pontificia Univ. Catolica de Chile, Santiago, Chile ; Gutierrez, C. ; Pérez, J.

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.

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:23 ,  Issue: 4 )