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CIKM
2008
Springer
15 years 8 months ago
Answering general time sensitive queries
Time is an important dimension of relevance for a large number of searches, such as over blogs and news archives. So far, research on searching over such collections has largely f...
Wisam Dakka, Luis Gravano, Panagiotis G. Ipeirotis
GIS
2007
ACM
16 years 7 months ago
Partition-based lazy updates for continuous queries over moving objects
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
Yu-Ling Hsueh, Roger Zimmermann, Haojun Wang, Wei-...
VLDB
2007
ACM
141views Database» more  VLDB 2007»
16 years 7 months ago
Query Processing over Incomplete Autonomous Databases
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
Garrett Wolf, Hemal Khatri, Bhaumik Chokshi, Jianc...
SIGMOD
2009
ACM
138views Database» more  SIGMOD 2009»
16 years 7 months ago
PRIMA: archiving and querying historical data with evolving schemas
Schema evolution poses serious challenges in historical data management. Traditionally historical data have been archived either by (i) migrating them into the current schema vers...
Hyun J. Moon, Carlo Curino, MyungWon Ham, Carlo Za...
SIGMOD
2007
ACM
186views Database» more  SIGMOD 2007»
16 years 6 months ago
Fg-index: towards verification-free query processing on graph databases
Graphs are prevalently used to model the relationships between objects in various domains. With the increasing usage of graph databases, it has become more and more demanding to e...
James Cheng, Yiping Ke, Wilfred Ng, An Lu