Abstract
We consider entailment problems involving powerful constraint languages such as guarded existential rules, in which additional semantic restrictions are put on a set of distinguished relations. We consider restricting a relation to be transitive, restricting a relation to be the transitive closure of another relation, and restricting a relation to be a linear order. We give some natural generalizations of guardedness that allow inference to be decidable in each case, and isolate the complexity of the corresponding decision problems. Finally we show that slight changes in our conditions lead to undecidability.
| Original language | English |
|---|---|
| Pages (from-to) | 893-899 |
| Number of pages | 7 |
| Journal | IJCAI International Joint Conference on Artificial Intelligence |
| Volume | 2016-January |
| Publication status | Published - 1 Jan 2016 |
| Externally published | Yes |
| Event | 25th International Joint Conference on Artificial Intelligence, IJCAI 2016 - New York, United States Duration: 9 Jul 2016 → 15 Jul 2016 |