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OSDI
2006
ACM
16 years 7 months ago
Fidelity and Yield in a Volcano Monitoring Sensor Network
We present a science-centric evaluation of a 19-day sensor network deployment at Reventador, an active volcano in Ecuador. Each of the 16 sensors continuously sampled seismic and ...
Geoffrey Werner-Allen, Konrad Lorincz, Jeff Johnso...
ICALP
2009
Springer
16 years 7 months ago
Rumor Spreading in Social Networks
Social networks are an interesting class of graphs likely to become of increasing importance in the future, not only theoretically, but also for its probable applications to ad hoc...
Flavio Chierichetti, Silvio Lattanzi, Alessandro P...
VLDB
2007
ACM
130views Database» more  VLDB 2007»
16 years 7 months ago
A Simple and Efficient Estimation Method for Stream Expression Cardinalities
Estimating the cardinality (i.e. number of distinct elements) of an arbitrary set expression defined over multiple distributed streams is one of the most fundamental queries of in...
Aiyou Chen, Jin Cao, Tian Bu
SIGMOD
2006
ACM
162views Database» more  SIGMOD 2006»
16 years 7 months ago
Efficient query processing in geographic web search engines
Geographic web search engines allow users to constrain and order search results in an intuitive manner by focusing a query on a particular geographic region. Geographic search tec...
Yen-Yu Chen, Torsten Suel, Alexander Markowetz
SIGMOD
2006
ACM
124views Database» more  SIGMOD 2006»
16 years 7 months ago
Redundancy and information leakage in fine-grained access control
The current SQL standard for access control is coarse grained, in that it grants access to all rows of a table or none. Fine-grained access control, which allows control of access...
Govind Kabra, Ravishankar Ramamurthy, S. Sudarshan