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I am currently studying two-way DFA and I couldn't find and research anything on its real-life applications if there are any. I am very unsure where it could be used and any ideas would be great. tyia

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    $\begingroup$ What kind of answer are you looking for? As a computational model, they are exponentially more succinct than their 1-way counterparts, so they allow easy modelling. Also, techniques that were developed for them, e.g., crossing-sequences, have proven useful in other models, e.g. string-to-string transducers. Is this what you consider "real life"? $\endgroup$
    – Shaull
    Aug 2, 2023 at 6:28
  • $\begingroup$ Not directly related, but you can check multi-pass streaming algorithms. $\endgroup$ Aug 3, 2023 at 8:57

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