3 papers
cs.DB2022
Saturation-based Boolean conjunctive query answering and rewriting for the guarded quantification fragments
Sen Zheng, Renate A. Schmidt
Query answering is an important problem in AI, database and knowledge representation. In this paper, we develop saturation-based Boolean conjunctive query answering and rewriting p…
cs.LO2020
Querying Guarded Fragments via Resolution
Sen Zheng, Renate A. Schmidt
Answering Boolean conjunctive queries over the guarded fragment is decidable, however, as yet no practical decision procedure exists. Meanwhile, ordered resolution, as a practicall…
cs.LO2020
Deciding the Loosely Guarded Fragment and Querying Its Horn Fragment Using Resolution
Sen Zheng, Renate A. Schmidt
We consider the following query answering problem: Given a Boolean conjunctive query and a theory in the Horn loosely guarded fragment, the aim is to determine whether the query is…