Representing and Managing the Context of a Situation

Krishnamoorthy, Shivsubramani; Bhargava, Preeti; Mah, Matthew; Agrawala, Ashok K.

doi:10.1093/comjnl/bxs037

Cited by 11 publications

(9 citation statements)

References 9 publications

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“…The complete details of RoCoMO are beyond the scope of this paper. For a detailed explanation of how a situation can be visualized, please refer to [13].…”

Section: Primitivesmentioning

confidence: 99%

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An ontological context model for representing a situation and the design of an intelligent context-aware middleware

Bhargava

Krishnamoorthy

Agrawala

2012

Proceedings of the 2012 ACM Conference on Ubiquitous Computing

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A major challenge of context models is to balance simplicity, generality, usability and extensibility. It is also important that the model be practical and implementable. In pursuit of this goal, this paper proposes a context model, Rover Context Model (RoCoM), structured around four primitives that can be used to represent and model any situation and activity: entities, events, relationships, and activities. It introduces the notion of templates of context for each primitive and describes, albeit briefly, the RoCoM Ontology (RoCoMO). It also describes the design and architecture of an abstract, generic and intelligent context-aware middleware called Rover II. We propose this framework as a solution to address the context problem as a whole, and be usable in many domains. We also illustrate its application with the aid of a context-aware public safety application that is deployed in the UMD campus.

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“…The complete details of RoCoMO are beyond the scope of this paper. For a detailed explanation of how a situation can be visualized, please refer to [13].…”

Section: Primitivesmentioning

confidence: 99%

“…Our framework uses a paradigm for handling context information that includes user specific context combined with common context. The next version -Rover II [13] is in its early stages of development. The context model mentioned in the previous section forms the crux of Rover II.…”

Section: Rover II Architecturementioning

confidence: 99%

An ontological context model for representing a situation and the design of an intelligent context-aware middleware

Bhargava

Krishnamoorthy

Agrawala

2012

Proceedings of the 2012 ACM Conference on Ubiquitous Computing

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“…Our framework uses a paradigm for handling context information that includes user specific context combined with common context. The next version -Rover-II [12] is in its early development stage. The context model mentioned in the previous section forms the crux of Rover-II…”

Section: Rover-iimentioning

confidence: 99%

Context-aware, technology enabled social contribution for public safety using M-Urgency

Krishnamoorthy

Agrawala

2012

Proceedings of the 14th International Conference on Human-Computer Interaction With Mobile Devices and Services

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M-Urgency is a public safety system that (1) redefines how emergency calls are made to a Public Safety Answering Point (PSAP) like the 911 system and (2) is designed to be contextaware of the situation in which it is used. M-Urgency enables mobile users to stream live audio and video from their devices to local PSAP along with the audio stream, the real time location and the relevant context information, enabling appropriate and prompt service. This paper presents a new feature, incorporated in M-Urgency, that enables social contribution whereby users in the vicinity of an emergency event can help operation conducted by the emergency personnel through verbal/visual information useful to them or by providing assistance. Our experiments show a very positive response from the participant to the capabilities of our system. In this paper, we also discuss the social implications such as privacy and security for this system.

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“…In our previous work [1], we have addressed the first aforementioned capability of a proactive context-aware system -modeling and predicting user behavior, as part of the Rover II context-aware middleware [2,6]. In this paper, we address the second key capability required by a context-aware system to act proactively -acting autonomously without an explicit user request.…”

Section: Introductionmentioning

confidence: 99%

Enabling Proactivity in Context-aware Middleware Systems by means of a Planning Framework based on HTN Planning

Bhargava¹,

Agrawala²

2015

Proceedings of the 12th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services

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Today's context-aware systems tend to be reactive or 'pull' based-the user requests or queries for some information and the system responds with the requested information. However, none of the systems anticipate the user's intent and behavior, or take into account his current events and activities to pro-actively 'push' relevant information to the user. On the other hand, Proactive context-aware systems can predict and anticipate user intent and behavior, and act proactively on the users' behalf without explicit requests from them. Two fundamental capabilities of such systems are: prediction and autonomy. In this paper, we address the second capability required by a context-aware system to act proactively i.e. acting autonomously without an explicit user request. To address it, we present a new paradigm for enabling proactivity in context-aware middleware systems by means of a Planning Framework based on HTN planning. We present the design of a Planning Framework within the infrastructure of our intelligent context-aware middleware called Rover II. We also implement this framework and evaluate its utility with several use cases. We also highlight the benefits of using such a framework in dynamic ubiquitous systems.

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Representing and Managing the Context of a Situation

Cited by 11 publications

References 9 publications

An ontological context model for representing a situation and the design of an intelligent context-aware middleware

An ontological context model for representing a situation and the design of an intelligent context-aware middleware

Context-aware, technology enabled social contribution for public safety using M-Urgency

Enabling Proactivity in Context-aware Middleware Systems by means of a Planning Framework based on HTN Planning

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