1832 search results - page 66 / 367 » Querying RDF Data Using A Multigraph-based Approach |
149
Voted
CORR
2011
Springer
14 years 9 months ago
2011
Springer
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
109
Voted
BNCOD
2001
15 years 4 months ago
2001
Abstract. Integrating, cleaning and analyzing data from heterogeneous sources is often complicated by the large amounts of data and its physical distribution which can result in po...
138
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DEXA
2009
Springer
15 years 9 months ago
2009
Springer
SPARQL is today the standard access language for Semantic Web data. In the recent years XML databases have also acquired industrial importance due to the widespread applicability o...
125
Voted
VLDB
1995
ACM
15 years 6 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
131
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FUN
2010
Springer
15 years 7 months ago
2010
Springer
The way memory hierarchy has evolved in recent decades has opened new challenges in the development of indexing structures in general and spatial access methods in particular. In t...