Maintaining knowledge about temporal intervals
Communications of the ACM
Composing Cardinal Direction Relations
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
Similarity of Cardinal Directions
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
Cardinal directions between spatial objects: the pairwise-consistency problem
Information Sciences—Informatics and Computer Science: An International Journal
Reasoning with cardinal directions: an efficient algorithm
AAAI'08 Proceedings of the 23rd national conference on Artificial intelligence - Volume 1
A new tractable subclass of the rectangle algebra
IJCAI'99 Proceedings of the 16th international joint conference on Artifical intelligence - Volume 1
Consistency checking of basic cardinal constraints over connected regions
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
On internal cardinal direction relations
COSIT'05 Proceedings of the 2005 international conference on Spatial Information Theory
ICAISC'12 Proceedings of the 11th international conference on Artificial Intelligence and Soft Computing - Volume Part II
| Hi-index | 0.00 |
The Cardinal Direction Calculus (CDC) is one of the most popular qualitative technique for spatial reasoning. The extended CDC (XCDC) can be successfully used for representation and reasoning about the spatio-temporal aspects of complex events. This paper discusses the problem of composing spatial relations in this formalism within systems using natural language input. We present the usage of the classic composition algorithm for both external and internal direction relations that can be driven from sentences in a natural language. Also some other solutions are introduced to improve the precision of the information processed by a system.