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CCS
2011
ACM
12 years 5 months ago
2011
ACM
A significant and growing class of location-based mobile applications aggregate position data from individual devices at a server and compute aggregate statistics over these posi...
CORR
2012
Springer
12 years 1 months ago
2012
Springer
We present a new type of monotone submodular functions: multi-peak submodular functions. Roughly speaking, given a family of sets F, we construct a monotone submodular function f ...
CSCW
2012
ACM
12 years 1 months ago
2012
ACM
Although many off-line organizations give their employees training, mentorship, a cohort and other socialization experiences that improve their retention and productivity, online ...
KDD
2012
ACM
11 years 8 months ago
2012
ACM
The communities of a social network are sets of vertices with more connections inside the set than outside. We theoretically demonstrate that two commonly observed properties of s...
SIGCSE
2009
ACM
14 years 6 months ago
2009
ACM
This paper describes the integration of the Alice 3D virtual worlds environment into a diverse set of subjects in middle school, including the development of tutorials, example wo...