Snoop: an expressive event specification language for active databases
Data & Knowledge Engineering
Maintaining knowledge about temporal intervals
Communications of the ACM
Design and evaluation of a wide-area event notification service
ACM Transactions on Computer Systems (TOCS)
An introduction to spatial database systems
The VLDB Journal — The International Journal on Very Large Data Bases - Spatial Database Systems
IEEE Transactions on Computers
The many faces of publish/subscribe
ACM Computing Surveys (CSUR)
An efficient spatial publish/subscribe system for intelligent location-based services
Proceedings of the 2nd international workshop on Distributed event-based systems
SINA: scalable incremental processing of continuous queries in spatio-temporal databases
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Event-based constraints for sensornet programming
Proceedings of the second international conference on Distributed event-based systems
Composite subscriptions in content-based publish/subscribe systems
Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware
A framework for event composition in distributed systems
Proceedings of the ACM/IFIP/USENIX 2003 International Conference on Middleware
Distributed Processing of Spatial Alarms: A Safe Region-Based Approach
ICDCS '09 Proceedings of the 2009 29th IEEE International Conference on Distributed Computing Systems
The SpaTeC composite event language for spatio-temporal reasoning in mobile systems
Proceedings of the Third ACM International Conference on Distributed Event-Based Systems
Effective and Efficient Event Dissemination for RFID Applications
The Computer Journal
Continuous constraint query evaluation for spatiotemporal streams
SSTD'07 Proceedings of the 10th international conference on Advances in spatial and temporal databases
Scalable processing of spatial alarms
HiPC'08 Proceedings of the 15th international conference on High performance computing
Spatial perspectives in event processing
From active data management to event-based systems and more
Bridging physical and virtual worlds: complex event processing for RFID data streams
EDBT'06 Proceedings of the 10th international conference on Advances in Database Technology
RFID-enabled shelf replenishment with backroom monitoring in retail stores
Decision Support Systems
Building a targeted mobile advertising system for location-based services
Decision Support Systems
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Many applications in the Internet of Things (IoT) depend on the occurrences of events with temporal and spatial constraints to determine the further actions. A major challenge encountered is how to specify and detect the spatio-temporal events. The paper adopts Pub/Sub middleware to help IoT applications to capture spatio-temporal events. Specifically, the paper presents a composite subscription language CPSL and builds the corresponding Pub/Sub middleware Grus. The subscriptions in CPSL can specify diverse temporal, spatial and logical relationships of events, in particular, can describe the moving events related to mobile objects, and Grus is responsible for detecting whether events are matched with subscriptions in a distributed way. In addition, Grus provides the optimization strategies for subscriptions involving unary spatial operators. The paper also evaluates Grus's matching performance and costs through simulation experiments. The experimental results show that Grus can achieve satisfying performance and acceptable overheads, and the optimization strategies can efficiently speed up the detection of spatial events.