Enabling Runtime Adaptation ofWorkflows to External Events in Enterprise Environments

Chakraborty, Dipanjan; Mankar, Vinod; Nanavati, Amit A.

doi:10.1109/icws.2007.85

Cited by 15 publications

(15 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tasks and role assignment constraints are shown in Table 2. Product and Rate decision engine FA/LB/BM t 3 Collecting data FA/LB/CL t 4 Analysing data of third-party 1 FA/LB/CL t 5 Analysing data of third-party 2 FA/LB/CL t 6 Analysing business rules FA/BM t 7 Underwriting UW/BM Assume that the following BoD and SoD constraints are imposed on the tasks, where r(ti) denotes the role assigned to task ti.…”

Section: Assembling Authorisation Modulesmentioning

confidence: 99%

See 1 more Smart Citation

Modelling Workflow Executions under Role-Based Authorisation Control

Duan

Chen

et al. 2011

2011 IEEE International Conference on Services Computing

View full text Add to dashboard Cite

Section: Assembling Authorisation Modulesmentioning

confidence: 99%

“…Business processes or workflows are often used to model enterprise applications [6]. A workflow consists of multiple activities or tasks with precedence constraints.…”

Section: Introductionmentioning

confidence: 99%

Modelling Workflow Executions under Role-Based Authorisation Control

Duan

Chen

et al. 2011

2011 IEEE International Conference on Services Computing

View full text Add to dashboard Cite

“…Business processes or workflows are often used to model enterprise applications [1] [2][3] [4]. A workflow consists of multiple activities or tasks with precedence constraints.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis and optimization for workflow authorization

Chang

Chaudhary

et al. 2017

Future Generation Computer Systems

View full text Add to dashboard Cite

Abstract-Many workflow management systems have been developed to enhance the performance of workflow executions. The authorization policies deployed in the system may restrict the task executions. The common authorization constraints include role constraints, Separation of Duty (SoD), Binding of Duty (BoD) and temporal constraints. This paper presents the methods to check the feasibility of these constraints, and also determines the time durations when the temporal constraints will not impose negative impact on performance. Further, this paper presents an optimal authorization method, which is optimal in the sense that it can minimize a workflow's delay caused by the temporal constraints. The authorization analysis methods are also extended to analyze the stochastic workflows, in which the tasks' execution times are not known exactly, but follow certain probability distributions. Simulation experiments have been conducted to verify the effectiveness of the proposed authorization methods. The experimental results show that comparing with the intuitive authorization method, the optimal authorization method can reduce the delay caused by the authorization constraints and consequently reduce the workflows' response time.

show abstract

“…When we design workflow management/scheduling strategies or plan resource capacities, it is often assumed that when a task is allocated to a resource, the resource will accept the task and start the execution once the processor becomes available [7][8] [9]. However, the authorization policies impose further constraints on task executions and therefore, may incur performance penalty and affect both application-and systemoriented performance.…”

Section: Introductionmentioning

confidence: 99%

Developing security-aware resource management strategies for workflows

Chaudhary

Jarvis

2014

Future Generation Computer Systems

View full text Add to dashboard Cite

Abstract-This paper investigates the resource allocation problem for a type of workflows in pervasive computing. These workflows are abstracted from the enterprise-level applications in the business or commerce area. The activities in these workflows require not only computing resources, but also human resources. Human involvement introduces additional security concerns. When we plan/allocate resource capacities, we often assume that when a task is allocated to a resource, the resource will accept the task and start the execution once the processor becomes available. However, the security policies impose further constraints on task executions, and therefore may affect both application-and system-oriented performance. Authorization is a important aspect in security. This paper investigates the issue of allocating resources for running workflows under the role-based authorization control, which is one of the most popular authorization mechanisms. By taking into account the authorization constraints, the resource allocation strategies are developed in this paper for both human resources and computing resources. In the allocation strategy for human resources, the optimization equation is constructed subject to the constraint of the budget available to hire human resources. Then the optimization equation is solved to obtain the number of human resources allocated to each authorization role. The allocation strategy for computing resources calculates not only the number of computing resources, but also the proportion of processing capacity in each resource allocated to serve the tasks assuming each role. The simulation experiments have been conducted to verify the effectiveness of the developed allocation strategies. The experimental results show that the allocation strategy developed in this paper outperforms the traditional allocation strategies, which do not consider authorization constraints, in terms of both average response time and resource utilization.

show abstract

Enabling Runtime Adaptation ofWorkflows to External Events in Enterprise Environments

Cited by 15 publications

References 16 publications

Modelling Workflow Executions under Role-Based Authorisation Control

Modelling Workflow Executions under Role-Based Authorisation Control

Performance analysis and optimization for workflow authorization

Developing security-aware resource management strategies for workflows

Contact Info

Product

Resources

About