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SIGIR
2009
ACM
15 years 4 months ago
A relevance-based topic model for news event tracking
Event tracking is the task of discovering temporal patterns of popular events from text streams. Existing approaches for event tracking have two limitations: scalability and inabi...
Viet Ha-Thuc, Yelena Mejova, Christopher Harris, P...
POLICY
2007
Springer
15 years 3 months ago
Specifying and Enforcing High-Level Semantic Obligation Policies
Obligation Policies specify management actions that must be performed when a particular kind of event occurs and certain conditions are satisfied. Large scale distributed systems...
Zhen Liu, Anand Ranganathan, Anton Riabov
BDA
2007
14 years 11 months ago
Towards Action-Oriented Continuous Queries in Pervasive Systems
Pervasive information systems give an overview of what digital environments should look like in the future. From a data-centric point of view, traditional databases have to be use...
Yann Gripay, Frédérique Laforest, Je...
SIGMOD
2009
ACM
202views Database» more  SIGMOD 2009»
15 years 10 months ago
ZStream: a cost-based query processor for adaptively detecting composite events
Composite (or Complex) event processing (CEP) systems search sequences of incoming events for occurrences of userspecified event patterns. Recently, they have gained more attentio...
Yuan Mei, Samuel Madden
TMC
2010
104views more  TMC 2010»
14 years 8 months ago
On Nodal Encounter Patterns in Wireless LAN Traces
—In this paper we analyze multiple wireless LAN (WLAN) traces from university and corporate campuses. In particular, we consider an important event between mobile nodes in wirele...
Wei-jen Hsu, Ahmed Helmy