Volume 13, Número 2

Cover for Volume.13, No.2

Cover for Volume.13, No.3

Cover for Volume.13, No.4

Preface to Volume 13

We also continue to publish work from many different disciplines and, particularly welcome, see that many of our articles represent collaborations between authors coming from different disciplines. Such broad representation and collaboration is the lifeblood of a transdiscipline. It is all too easy for a journal to gravitate towards a particular perspective on research. It is heartening to see ...

13 Volume Editors

The W3C SPARQL working group is defining the new SPARQL 1.1query language. The current working draft of SPARQL 1.1 focuses mainly on thedescription of the language. In this paper, we provide a formalization of the syntaxand semantics of the SPARQL 1.1 federation extension, an important fragment ofthe language that has not yet received much attention. Besides, we propose opti-<lb...