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Ontology based context modeling and reasoning using OWL
tl;dr
We propose an OWL encoded context ontology (CONON) for modeling context in pervasive computing environments, and for supporting logic-based context reasoning. Expand
  • 1,254
  • 85
  • Open Access
A service-oriented middleware for building context-aware services
tl;dr
We propose a Service-Oriented Context-Aware Middleware (SOCAM) architecture for the building and rapid prototyping of context-aware services. Expand
  • 966
  • 57
  • Open Access
A middleware for building context-aware mobile services
tl;dr
We present a service-oriented context-aware middleware (SOCAM) architecture for the building and rapid prototyping of Context-aware mobile services in an intelligent vehicle environment. Expand
  • 424
  • 15
epSICAR: An Emerging Patterns based approach to sequential, interleaved and Concurrent Activity Recognition
tl;dr
We propose a novel Emerging Patterns based approach to Sequential, Interleaved and Concurrent Activity Recognition (epSICAR). Expand
  • 227
  • 14
  • Open Access
A timed workflow process model
tl;dr
This paper proposes a timed workflow process model through incorporating the time constraints, duration of activities, the duration of flow, and the activity distribution with respect to the multiple time axes into the conventional workflow processes. Expand
  • 117
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Toward an OSGi-based infrastructure for context-aware applications
tl;dr
A formal, ontology-based context model enables semantic context representation, reasoning, and knowledge sharing. Expand
  • 253
  • 8
  • Open Access
Object relevance weight pattern mining for activity recognition and segmentation
tl;dr
We develop a KeyExtract algorithm for activity recognition and two algorithms, MaxGap and MaxGain, for activity segmentation with linear time complexities. Expand
  • 117
  • 7
  • Open Access
Location Diversity: Enhanced Privacy Protection in Location Based Services
tl;dr
We present an attack model that maps each observed query to a linear equation involving semantic locations, and we show that a necessary condition to preserve privacy is the existence of infinite solutions in the resulting system of linear equations. Expand
  • 120
  • 7
  • Open Access
An Ontology-based Context Model in Intelligent Environments
tl;dr
We propose a formal context model based on ontology using OWL to address issues including semantic context representation, context reasoning and knowledge sharing, context classification, context dependency and quality of context. Expand
  • 79
  • 4
  • Open Access
An integrated color-spatial approach to content-based image retrieval
tl;dr
The use of color information for image retrieval has been used widely in many content-based retrieval system with some success. Expand
  • 205
  • 3
  • Open Access