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» The EGTV Query Language
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ESWS
2007
Springer
15 years 11 months ago
SPARQLeR: Extended Sparql for Semantic Association Discovery
Complex relationships, frequently referred to as semantic associations, are the essence of the Semantic Web. Query and retrieval of semantic associations has been an important task...
Krys Kochut, Maciej Janik
185
Voted
PODS
1999
ACM
160views Database» more  PODS 1999»
15 years 9 months ago
Queries with Incomplete Answers over Semistructured Data
Semistructured data occur in situations where information lacks a homogeneous structure and is incomplete. Yet, up to now the incompleteness of information has not been re ected b...
Yaron Kanza, Werner Nutt, Yehoshua Sagiv
EMNLP
2010
15 years 2 months ago
Context Comparison of Bursty Events in Web Search and Online Media
In this paper, we conducted a systematic comparative analysis of language in different contexts of bursty topics, including web search, news media, blogging, and social bookmarkin...
Yunliang Jiang, Cindy Xide Lin, Qiaozhu Mei
SIGMOD
2006
ACM
127views Database» more  SIGMOD 2006»
16 years 5 months ago
Query evaluation using overlapping views: completeness and efficiency
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
Gang Gou, Maxim Kormilitsin, Rada Chirkova
ICDT
2010
ACM
180views Database» more  ICDT 2010»
16 years 2 months ago
Foundations of SPARQL Query Optimization
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
Michael Schmidt, Michael Meier, Georg Lausen