Author:Berglund, Martin; Bester, W; van der Merwe, BDate:Oct 2018Whereas Perl-compatible regular expression matchers typically exhibit some variation of leftmost-greedy semantics, those conforming to the posix standard are prescribed leftmost-longest semantics. However, the posix standard leaves some room ...Read more
Author:Berglund, Martin; Drewes, F; Van der Merwe, BDate:Aug 2018Modern regular expression matching software features many extensions, some general while some are very narrowly specified. Here we consider the generalization of adding a class of operators which can be described by, e.g. finite-state ...Read more
Author:Berglund, Martin; Drewes, F; Van der Merwe, BDate:Apr 2018The output size problem, for a string-to-tree transducer, is to determine the asymptotic behavior of the function describing the maximum size of output trees, with respect to the length of input strings. We show that the problem to determine, ...Read more