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A Robust Class of Data Languages and an Application to Learning

Benedikt Bollig ; Peter Habermehl ; Martin Leucker ; Benjamin Monmege.

We introduce session automata, an automata model to process data words, i.e., words over an infinite alphabet. Session automata support the notion of fresh data values, which are well suited for modeling protocols in which sessions using fresh values are of major interest, like in security protocols&nbsp;[&hellip;]

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On the Expressive Power of 2-Stack Visibly Pushdown Automata

Benedikt Bollig.

Visibly pushdown automata are input-driven pushdown automata that recognize some non-regular context-free languages while preserving the nice closure and decidability properties of finite automata. Visibly pushdown automata with multiple stacks have been considered recently by La Torre, Madhusudan,&nbsp;[&hellip;]

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