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Lecture Notes in Computer Science
We introduce an automata model for data words, that is words that carry at each position a symbol from a finite alphabet and a value from an unbounded data domain. The model is (semantically) a restriction of data automata, introduced by Bojanczyk, et. al. in 2006, therefore it is called weak data automata. It is strictly less expressive than data automata and the expressive power is incomparable with register automata. The expressive power of weak data automata corresponds exactly todoi:10.1007/978-3-642-28332-1_30 fatcat:5pods2csn5e7zdr53mgtekqv6m