5154 search results - page 836 / 1031 » Modelling online education |
190
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...
141
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
We consider the problem of maximizing a nonnegative (possibly non-monotone) submodular set function with or without constraints. Feige et al. [9] showed a 2/5-approximation for th...
176
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
: We consider a class of point processes, which we call sub-Poisson; these are point processes that can be directionallyconvexly (dcx) dominated by some Poisson point process. The ...
174
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CORR
2008
Springer
15 years 6 months ago
2008
Springer
Abstract. Sponsored search involves running an auction among advertisers who bid in order to have their ad shown next to search results for specific keywords. The most popular auct...
176
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CORR
2008
Springer
15 years 6 months ago
2008
Springer
Provenance is information about the origin, derivation, ownership, or history of an object. It has recently been studied extensively in scientific databases and other settings due...