A Context-aware and workflow-based framework for pervasive environments

Download

index.pdf

Date

2014

Author

Avenoğlu, Bilgin

Metadata

Show full item record

Item Usage Stats

197
views

155
downloads

In this thesis study, a framework offering people help and guidance for organizing their daily activities is proposed. This framework allows users to model their daily activities in the form of workflows. Due to the dynamic nature of pervasive environments, workflows are enabled to be adaptable at runtime according to context information collected in pervasive environments. A workflow engine is used for modeling and management of workflows and a separate rule engine with Complex Event Processing (CEP) capability is incorporated into the framework for both enhancing workflow adaptation and execution and for rule-based context reasoning. The adaptation model in the framework allows modeling activities in a hierarchical manner, from high level abstract activities to more detailed ones. Event-driven Architecture (EDA) is utilized for loosely coupled interaction between the workflow engine and the rule engine, allowing these engines, other context sources and user-level applications to exchange data among each other. Since workflow engines are sufficiently complex, EDA allows incorporation of context information into the workflow models without modifying the workflow language. A higher automation level than the level supported by workflows is proposed by processing events in pervasive environments using CEP. A prototype implementation is developed and the framework is evaluated with some real life examples and experimental tests demonstrating its applicability.

Subject Keywords

Ubiquitous computing., Context-aware computing., Event processing (Computer science)., Workflow management systems.

URI

http://etd.lib.metu.edu.tr/upload/12617098/index.pdf
https://hdl.handle.net/11511/23495

Collections

Graduate School of Informatics, Thesis

Suggestions

OpenMETU
Core

A context-aware and workflow-based framework for pervasive environments Avenoglu, Bilgin; Eren, Pekin Erhan (2019-01-01) Using currently available infrastructure in pervasive environments it is possible to provide intelligent mechanisms that offer people help and guidance for organizing their daily activities. In this study, a framework providing such capabilities is proposed. This framework allows users to model their daily activities in the form of workflows, which are adaptable at run-time according to context information collected in pervasive environments. A workflow engine is used for modelling and management of workflo...
A method for decentralized business process modeling Türetken, Oktay; Demirörs, Onur; Department of Information Systems (2007) This thesis study proposes a method for organizations to perform business process modeling in a decentralized and concurrent manner. The Plural method is based on the idea that organizations’ processes can be modeled by individuals actually performing the processes. Instead of having a central and devoted group of people to understand, analyze, model and improve processes, individuals are held responsible to model and improve their own processes concurrently. These individual models are then integrated to f...
A unifying grid approach for solving potential flows applicable to structured and unstructured grid configurations Cete, A. Ruhsen; Yuekselen, M. Adil; Kaynak, Uenver (Elsevier BV, 2008-01-01) In this study, an efficient numerical method is proposed for unifying the structured and unstructured grid approaches for solving the potential flows. The new method, named as the "alternating cell directions implicit - ACDI", solves for the structured and unstructured grid configurations equally well. The new method in effect applies a line implicit method similar to the Line Gauss Seidel scheme for complex unstructured grids including mixed type quadrilateral and triangle cells. To this end, designated al...
A survey on OR and mathematical methods applied on gene-environment networks Weber, Gerhard Wilhelm; Kropat, Erik; Öztürk, Başak; Gorgulu, Zafer-Korcan (Springer Science and Business Media LLC, 2009-09-01) In this paper, we survey the recent advances and mathematical foundations of gene-environment networks. We explain their interdisciplinary implications with special regard to human and life sciences as well as financial sciences. Special attention is paid to applications in Operational Research and environmental protection. Originally developed in the context of modeling and prediction of gene-expression patterns, gene-environment networks have proved to provide a conceptual framework for the modeling of dy...
A Mobile sensing framework for audience emotion analysis Kepucka, Eldjon; Temizel, Alptekin; Department of Information Systems (2014) The main objective of this thesis is to develop a multi-modal framework which facilitates simple data collection using mobile sensing on smartphones from an audience, for the duration of an experimental study. Current solutions primarily rely on custom mobile sensing platforms which are expensive to develop and complicated to apply. While there are a number of mobile sensing platforms developed for smartphones targeting different domains, such as transportation and air pollution they are not designed to be ...

Citation Formats

B. Avenoğlu, “A Context-aware and workflow-based framework for pervasive environments,” Ph.D. - Doctoral Program, Middle East Technical University, 2014.