@article{oai:nagoya.repo.nii.ac.jp:00007552, author = {Nishida, Naoki and Mizutani, Tomohiro and Sakai, Masahiko}, journal = {Proceedings of 6th International Workshop on Reduction Strategies in Rewriting and Programming, Seattle, 2006}, month = {}, note = {Unravelings, which transform conditional term rewriting systems (CTRSs) into unconditional term rewriting systems, are useful for analyzing properties of CTRSs. To compute reduction sequences of CTRSs, the restriction by a particular context-sensitive and membership condition is imposed on reductions of the unraveled CTRSs. The condition is determined by extra function symbols introduced due to the unravelings. In this paper, we propose a method to weaken the restriction, that is, to reduce the number of extra symbols. We first improve the unraveling for deterministic CTRSs, and then propose a transformation that folds to two successively used rewrite rules in the unraveled CTRSs, which satisfy a condition, to a rewrite rule that simulates reductions by the two rules.}, pages = {34--48}, title = {Transformation for Refining Unraveled Conditional Term Rewriting Systems}, year = {2007} }