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SIAMIS
2011
14 years 7 days ago
On the Illumination Invariance of the Level Lines under Directed Light: Application to Change Detection
We analyze the illumination invariance of the level lines of an image. We show that if the scene surface has Lambertian reflectance and the light is directed, then a necessary and...
Pierre Weiss, Alexandre Fournier, Laure Blanc-F&ea...
SIGIR
2011
ACM
14 years 6 days ago
The economics in interactive information retrieval
Searching is inherently an interactive process usually requiring numerous iterations of querying and assessing in order to find the desired amount of relevant information. Essent...
Leif Azzopardi
SIGMOD
2011
ACM
299views Database» more  SIGMOD 2011»
14 years 6 days ago
Processing theta-joins using MapReduce
Joins are essential for many data analysis tasks, but are not supported directly by the MapReduce paradigm. While there has been progress on equi-joins, implementation of join alg...
Alper Okcan, Mirek Riedewald
SIGMOD
2011
ACM
220views Database» more  SIGMOD 2011»
14 years 6 days ago
Zephyr: live migration in shared nothing databases for elastic cloud platforms
Multitenant data infrastructures for large cloud platforms hosting hundreds of thousands of applications face the challenge of serving applications characterized by small data foo...
Aaron J. Elmore, Sudipto Das, Divyakant Agrawal, A...
AAAI
2011
13 years 9 months ago
Composite Social Network for Predicting Mobile Apps Installation
We have carefully instrumented a large portion of the population living in a university graduate dormitory by giving participants Android smart phones running our sensing software...
Wei Pan, Nadav Aharony, Alex Pentland