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Lightweight Spatial Conjunctive Query Answering using Keywords
Published on Jul 08, 20132982 Views
With the advent of publicly available geospatial data, ontology-based data access (OBDA) over spatial data has gained increasing interest. Spatiorelational DBMSs are used to implement geographic infor
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Chapter list
Lightweight Spatial Conjunctive Query Answering using Keywords00:00
Motivation00:13
Aims and Challenges01:35
Spatial Relations I02:54
Spatial Relations II04:19
DL-LiteR(S) Syntax05:02
DL-LiteR(S) Semantics I06:34
DL-LiteR(S) Semantics II08:32
Spatial Conjunctive Queries09:23
SCQ are FO-Rewritable09:58
Query Evaluation Algorithm11:28
Meta-Model for SCQs13:42
Generation of SCQs14:26
Refinement of SCQs15:08
Scenario and Implementation16:27
Experimental Setup17:14
Results17:36
Conclusion and Outlook19:44