An automaton over data words that captures EMSO logic
CONCUR'11 Proceedings of the 22nd international conference on Concurrency theory
Foundations of XML based on logic and automata: a snapshot
FoIKS'12 Proceedings of the 7th international conference on Foundations of Information and Knowledge Systems
Regular expressions for data words
LPAR'12 Proceedings of the 18th international conference on Logic for Programming, Artificial Intelligence, and Reasoning
Querying graph databases with XPath
Proceedings of the 16th International Conference on Database Theory
On XPath with transitive axes and data tests
Proceedings of the 32nd symposium on Principles of database systems
Reasoning about Data Repetitions with Counter Systems
LICS '13 Proceedings of the 2013 28th Annual ACM/IEEE Symposium on Logic in Computer Science
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We define a new kind of automata recognizing properties of data words or data trees and prove that the automata capture all queries definable in Regular XPath. We show that the automata-theoretic approach may be applied to answer decidability and expressibility questions for XPath. Finally, we use the newly introduced automata as a common framework to classify existing automata on data words and trees, including data automata, register automata and alternating register automata.