Paper Info
Title
Modelling and analyzing the authorization and execution of video workflows
Abstract
It is becoming common practice to migrate signal-based video workflows to IT-based Video workflows. Video workflows have some inherent features, including: 1) necessary human involvements in video workflows introduce security and authorization concerns; 2) the frequent change of video workflow contexts requires a flexible approach to acquiring performance data; 3) the content-centric nature of video workflows, which is in contrast to the business-centric of business workflows, requires the support of scheduled activities. This paper takes the above issues into account, proposing a novel mechanism for modeling video workflow executions in cluster-based resource pools under Role-Based Authorization Control (RBAC) schemes. The Color Timed Petri-Net (CTPN) formalism is applied to construct the models. Various types of authorization constraint are modeled in this paper, and scheduled activities are also supported in the model. There is a clear interface between workflow execution and workflow authorization modules. The constructed models are then simulated and analyzed to obtain performance data, including authorization overhead, system- and application-oriented performance. Based on the model analysis, this paper further proposes the methods to improve performance in the presence of authorization policies. This work can be used to plan system capacity subject to the authorization control, and can also be used to tune performance by changing the scheduling strategy and resource capacity when it is not possible to adjust the authorization policies.
Year
DOI
Venue
2011
10.1109/HiPC.2011.6152727
HiPC
Keywords
Field
DocType
business-centric,video signal processing,signal-based video workflow,pattern clustering,video workflow content-centric nature,video workflows,authorization concern,petri nets,role-based authorization control,workflow execution,system-application-oriented performance,cluster-based resource pool,rbac,authorization control,color timed petri net formalism,workflow,workflow authorization module,authorization overhead,scheduling strategy,performance data,authorisation,resource capacity,workflow management software,business workflows,authorization constraint,business workflow,modeling,it-based video workflows,authorization,it-based video workflow,authorization policy,color
Petri net,Pattern clustering,Scheduling (computing),Computer science,Authorization,Role-based access control,System capacity,Workflow,Distributed computing
Conference
ISBN
Citations 
PageRank 
978-1-4577-1949-3
0
0.34
References 
Authors
9
8
Name
Order
Citations
PageRank
Ligang He154256.73
Chenlin Huang2488.83
Kenli Li354058.66
Hao Chen421137.88
Jianhua Sun519225.27
Bo Gao6365.68
Kewei Duan7152.37
Stephen A. Jarvis8107387.04