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CIKM
2010
Springer
15 years 5 months ago
A hierarchical approach to reachability query answering in very large graph databases
The cost of reachability query computation using traditional algorithms such as depth first search or transitive closure has been found to be prohibitive and unacceptable in mass...
Saikat K. Dey, Hasan M. Jamil
VLDB
2007
ACM
126views Database» more  VLDB 2007»
16 years 6 months ago
Querying Complex Structured Databases
Correctly generating a structured query (e.g., an XQuery or a SQL query) requires the user to have a full understanding of the database schema, which can be a daunting task. Alter...
Cong Yu, H. V. Jagadish
IROS
2008
IEEE
95views Robotics» more  IROS 2008»
16 years 25 days ago
Energy management for indoor hovering robots
— Flying has an advantage when compared to ground based locomotion, as it simplifies the task of overcoming obstacles and allows for rapid coverage of an area while also providi...
James F. Roberts, Jean-Christophe Zufferey, Dario ...
LCTRTS
2004
Springer
15 years 11 months ago
Finding effective compilation sequences
Most modern compilers operate by applying a fixed, program-independent sequence of optimizations to all programs. Compiler writers choose a single “compilation sequence”, or ...
L. Almagor, Keith D. Cooper, Alexander Grosul, Tim...
EDBT
2004
ACM
147views Database» more  EDBT 2004»
16 years 6 months ago
Projection Pushing Revisited
The join operation, which combines tuples from multiple relations, is the most fundamental and, typically, the most expensive operation in database queries. The standard approach t...
Benjamin J. McMahan, Guoqiang Pan, Patrick Porter,...