My approch is simple.
Find infinite loop -> annote by "===>" Then unification is exected by search the sub list including the anotation using on-tree macro Evgenii Moiseenko: > > Jason, > > Thank you, I will look into the paper you've cited. > > среда, 21 марта 2018 г., 18:50:41 UTC+3 пользователь Jason Hemann написал: >> >> Evgenii, >> >> I'm also interested also to hear more about Hirotaka's approach. But I >> think *if* that sort of situation came up, one way to handle it suggested >> by Djelloul, Dao, and Früworth in "Theory of Finite or Infinite Trees >> Revisited" is to add a finite() constraint. With that additional >> constraint, one can get back the expected behavior of unification over >> finite trees when desired. >> >> Best, >> >> JBH >> >> >> >> On Wed, Mar 21, 2018 at 8:01 AM, Evgenii Moiseenko <evg.moi...@gmail.com> >> wrote: >> >>> Hi ! >>> >>> Am I right, that your extension of MiniKanren to handle recursive terms >>> are in spirit of Unification over Rational Trees theory ? >>> >>> BTW, Is Unification over Rational Trees subsumes ordinary unification >>> over finite trees (i.e. with occurs check) ? >>> >>> Is there cases when `occurs check` are needed in order to obtain >>> `expected` results ? >>> >>> пятница, 9 марта 2018 г., 21:58:33 UTC+3 пользователь Niitsuma Hirotaka >>> написал: >>> >>>> Thak you for very useful references and codes. >>>> I try to compare. >>>> >>>> >>>> I recently ran across these slides, which talks about dealing with >>>>> left-recursive grammars without recursive unification: >>>>> https://staff.fnwi.uva.nl/c.u.grelck/nl-fp-talks/kourzanov.pdf >>>>> >>>>> Is it possible to compare your approach, and describe the pros and >>>>> cons? How well does your approach run "backwards" and "sideways"? >>>>> >>>>> On Tuesday, March 6, 2018 at 9:59:51 PM UTC-5, Niitsuma Hirotaka wrote: >>>>>> >>>>>> >Do you have a preprint available or something? >>>>>> >>>>>> http://www.suri.cs.okayama-u.ac.jp/~niitsuma/cfgkanren.pdf >>>>>> <http://www.google.com/url?q=http%3A%2F%2Fwww.suri.cs.okayama-u.ac.jp%2F~niitsuma%2Fcfgkanren.pdf&sa=D&sntz=1&usg=AFQjCNEv93tEaW5K3oKkNxT5h8eZ0Syc9A> >>>>>> >>>>>> >>>>>> >>>>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "minikanren" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to minikanren+...@googlegroups.com. >>> To post to this group, send email to minik...@googlegroups.com. >>> Visit this group at https://groups.google.com/group/minikanren. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> JBH >> > -- You received this message because you are subscribed to the Google Groups "minikanren" group. To unsubscribe from this group and stop receiving emails from it, send an email to minikanren+unsubscr...@googlegroups.com. To post to this group, send email to minikanren@googlegroups.com. Visit this group at https://groups.google.com/group/minikanren. For more options, visit https://groups.google.com/d/optout.
