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Web Reasoning and Rule Systems: 8th International by Roman Kontchakov, Marie-Laure Mugnier

By Roman Kontchakov, Marie-Laure Mugnier

This e-book constitutes the refereed lawsuits of the eighth foreign convention on internet Reasoning and Rule platforms, RR 2014, held in Athens, Greece in September 2014.
The nine complete papers, nine technical communications and five poster shows offered including three invited talks, three doctoral consortial papers have been rigorously reviewed and chosen from 33 submissions.
The convention covers quite a lot of the subsequent: semantic internet, rule and ontology languages, and comparable logics, reasoning, querying, looking and optimization, incompleteness, inconsistency and uncertainty, non-monotonic, logic, and closed-world reasoning for the net, dynamic info, circulate reasoning and complicated occasion processing, determination making, making plans, and clever brokers, computer studying, wisdom extraction and data retrieval, info administration, information integration and reasoning on the internet of knowledge, ontology-based information entry, procedure descriptions, purposes and stories.

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Extra resources for Web Reasoning and Rule Systems: 8th International Conference, RR 2014, Athens, Greece, September 15-17, 2014. Proceedings

Sample text

The root of this tree must be labelled g([a]). Observation 1. All of the edges in G(T k ) as sketched in Fig. 3 are essential for the entailment to hold: a substructure that lacks any of these edges could always be based on some different theory that does not entail a to be false. Therefore, we can assume that each atom of G(T k ) occurs as a label for a leaf node in the proof tree we consider. Observation 2. We can assume that every rule body in P, when viewed as a graph with variables as vertices and body atoms as edges, is connected and contains the variable in the head of the rule.

Another aspect that we ignored completely is the notion of problem reductions. Complexity theory uses many-to-one reductions to form larger complexity classes, but it is not clear which query languages can implement which kinds of reductions. Yet another possible extension would be to generalise the form of input problems we consider. While theories (as finite sets of terms) capture many problems, one could also consider more general formulations based on context-free grammars that describe problem instances.

This work was supported by the DFG in project DIAMOND (Emmy Noether grant KR 4381/1-1). References 1. : Foundations of Databases. Addison Wesley (1994) 2. : Expressiveness of restricted recursive queries. In: Proc. 21st Symposium on Theory of Computing Conference (STOC 1989), pp. 113–126. ACM (1989) 3. : Pushing the EL envelope. , Saffiotti, A. ) Proc. 19th Int. Joint Conf. on Artificial Intelligence (IJCAI 2005), pp. 364–369. Professional Book Center (2005) 4. : Expressive languages for path queries over graph-structured data.

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