Requirements Prioritisation for Incremental and Iterative Development

Requirements Prioritisation for Incremental and Iterative Development

D. Greer (Queens University Belfast, UK)
Copyright: © 2005 |Pages: 19
DOI: 10.4018/978-1-59140-506-1.ch007
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Abstract

The problems associated with requirements prioritisation for an incremental and iterative software process are described. Existing approaches to prioritisation are then reviewed, including the Analytic Hierarchy Process, which involves making comparisons between requirements and SERUM, a method that uses absolute estimations of costs, benefits, and risks to inform the prioritisation process. In addition to these, the use of heuristic approaches is identified as a useful way to find an optimal solution to the problem given the complex range of inputs involved. In particular genetic algorithms are considered promising. An implementation of this, the EVOLVE method, is described using a case study. EVOLVE aims to optimally assign requirements to releases, taking into account: (i) effort measures for each requirement and effort constraints for each increment; (ii) risk measures for each requirement and risk limits for each increment; (iii) precedence constraints between requirements (where one requirement must always be in an earlier or the same increment as another); (iv) coupling constraints between requirements (where two or more must be in the same increment); and (v) resource constraints (where two or more requirements may not be in the same increment due to using some limited resource). The method also handles uncertainty in the effort inputs, which are supplied as distributions and simulated using Monte Carlo simulation before carrying out the genetic algorithm operations. In addition to handling uncertainty, EVOLVE offers several advantages over existing methods since it handles a large range of factors. The overall implementation of the method allows the inputs to be changed at each iteration, and so better fits reality where requirements are changing all the time.

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Table of Contents
Foreword
Bashar Nuseibeh
Acknowledgments
Jose Luis Mate, Andres Silva
Chapter 1
Päivi Parviainen, Maarit Tihinen, Marco Lormanms, Rini van Solingen
This chapter introduces requirements engineering for sociotechnical systems. Requirements engineering for sociotechnical systems is a complex... Sample PDF
Requirements Engineering: Dealing with the Complexity of Sociotechnical Systems Development
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Chapter 2
Eman Nasr
In this chapter we are particularly interested in requirements engineering of software where the software is part of a complex engineered system;... Sample PDF
Challenges in Requirements Engineering for Embedded Systems
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Chapter 3
Chad Coulin, Didar Zowghi
This chapter examines requirements elicitation for complex systems from a theoretical and practical perspective. System stakeholders, requirements... Sample PDF
Requirements Elicitation for Complex Systems: Theory and Practice
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Chapter 4
Javier Andrade Garda, Juan Ares Casa, Rafael García Vázquez, Santiago Rodríguez Yáñez
This chapter focuses on software engineering conceptual modeling, its current weaknesses, and the alternatives to overcome them. It is clear that... Sample PDF
Conceptual Modeling in Requirements Engineering: Weaknesses and Alternatives
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Chapter 5
Angélica de Antonio, Ricardo Imbert
The concept of Agent is being used with different meanings and purposes in two separate fields of software engineering, namely Requirements... Sample PDF
Combining Requirements Engineering and Agents
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Chapter 6
Pete Sawyer
The interest in Software Process Improvement (SPI) in the early 1990s stimulated tentative work on parallel models for Requirements Engineering (RE)... Sample PDF
Maturing Requirements Engineering Process Maturity Models
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Chapter 7
D. Greer
The problems associated with requirements prioritisation for an incremental and iterative software process are described. Existing approaches to... Sample PDF
Requirements Prioritisation for Incremental and Iterative Development
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Chapter 8
Juan Pablo Carvallo, Xavier Franch, Carme Quer
This chapter proposes the use of quality models to describe the quality of requirements management tools. We present the COSTUME (COmposite SofTware... Sample PDF
A Quality Model for Requirements Management Tools
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Chapter 9
Panayiotis Periorellis
Information Systems in general carry or have embedded in their structure, elements that stem from the organization’s strategic, tactical, and... Sample PDF
Composing Systems of Systems: Requirements for the Integration of Autonomous Computer Systems
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Chapter 10
Barbara Paech, Christian Denger, Daniel Kerkow, Antje von Knethen
Over the last few years the functionality and complexity of technical products has increased dramatically. This is reflected in the complexity of... Sample PDF
Requirements Engineering for Technical Products: Integrating Specification, Validation and Change Management
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Chapter 11
Ines Grützner, Barbara Paech
Technology-enabled learning using the Web and the computer and courseware, in particular, is becoming more and more important as an addition... Sample PDF
Requirements Engineering for Courseware Development
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Chapter 12
Stefan Dietze
This chapter discusses typical collaborative requirements definition processes as they are performed in open source software development (OSSD)... Sample PDF
Collaborative Requirements Definition Processes in Open Source Software Development
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Chapter 13
Jaap Gordijn
Value webs are cooperating, networked enterprises and end-consumers that create, distribute, and consume things of economic value. The task of... Sample PDF
Requirements Engineering for Value Webs
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Chapter 14
J. L. Garrido, M. Gea, M. L. Rodríguez
Technology is increasing the possibilities for working in groups and even changing the way in which traditionally this has been performed. This... Sample PDF
Requirements Engineering in Cooperative Systems
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Chapter 15
Sara Jones, Neil Maiden
This chapter describes RESCUE (Requirements Engineering with Scenarios for a User-centred Environment), a method for specifying requirements for... Sample PDF
RESCUE: An Integrated Method for Specifying Requirements for Complex Sociotechnical Systems
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Chapter 16
Inger Dybdahl Sørby, Line Melby, Gry Seland
This chapter presents two different techniques for elicitation and analysis of requirements for a mobile electronic patient record (EPR) to be used... Sample PDF
Using Scenarios and Drama Improvisation for Identifying and Analysing Requirements for Mobile Electronic Patient Records
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Chapter 17
Daniel Kerkow, Jörg Dörr, Barbara Paech, Thomas Olsson, Tom Koenig
This chapter describes how non-functional requirements (NFR) can be elicited and documented in the context of sociotechnical systems. An approach is... Sample PDF
Elicitation and Documentation of Non-Functional Requirements for Sociotechnical Systems
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Chapter 18
Raymond McCall, Ivan Mistrik
This chapter explains how natural language processing (NLP) and participatory design can aid in identifying system requirements. It argues that... Sample PDF
Capture of Software Requirements and Rationale through Collaborative Software Development
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Chapter 19
Jon G. Hall, Lucia Rapanotti
This chapter introduces Problem Frames as a framework for the analysis of sociotechnical problems. It summarizes the Problem Frames approach, its... Sample PDF
Problem Frames for Sociotechnical Systems
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Chapter 20
Stefan Cronholm, Göran Goldkuhl
In this chapter we challenge the view of perceiving information systems as systems for storing, retrieving, and organizing large amounts of data. We... Sample PDF
Communication Analysis as Perspective and Method for Requirements Engineering
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