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WSDM
2012
ACM
12 years 2 months ago
2012
ACM
We study the problem of correlating micro-blogging activity with stock-market events, defined as changes in the price and traded volume of stocks. Specifically, we collect messa...
SIGCSE
2009
ACM
14 years 8 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...
KDD
2009
ACM
14 years 8 months ago
2009
ACM
Classification is a core task in knowledge discovery and data mining, and there has been substantial research effort in developing sophisticated classification models. In a parall...
PODS
2009
ACM
14 years 8 months ago
2009
ACM
Querying uncertain data has emerged as an important problem in data management due to the imprecise nature of many measurement data. In this paper we study answering range queries...
STOC
2002
ACM
14 years 7 months ago
2002
ACM
We present improved algorithms for maintaining transitive closure and all-pairs shortest paths/distances in a digraph under deletion of edges. For the problem of transitive closur...