The IT Measurement Compendium
Estimating and Benchmarking Success with Functional Size Measurement
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Beschreibung
The first step towards success in a software project is to ensure a professional setup. This includes a metrics-based formal estimation process to ensure a solid foundation for project planning. Accurate estimates require quantitative measurements, ideally tool based. In addition, software project managers must also monitor and update these estimates during the project’s lifecycle to control progress and assess possible risks.
Based on their many years of practical experience as software managers and consultants, Manfred Bundschuh and Carol Dekkers present a framework of value to anyone involved with software project management. They present all five ISO/IEC-acknowledged Functional Sizing Methods, with variants, experiences, counting rules and case studies, and they use numerous practical examples to show how to use functional size measurement to produce realistic estimates.
Written in a highly practical style, including checklists, templates, and hands-on advice, and backed up with many pointers to both national and international metrics and standards organizations, this book is the ideal companion for the busy software project manager or quality assurance manager.
“As projects get more complicated, managers stop learning from their - perience. It is important to understand how that happens and how to change it…. Fallible estimates: In software development, initial estimates for a project shape the trajectory of decisions that a manager makes over its life. For ex- ple, estimates of the productivity of the team members influence decisions about the size of the team, which in turn affect the team’s actual output. The trouble is that initial estimates usually turn out to be wrong. ” (Sengupta, 2008) This book aims directly to increase the awareness among managers and practitioners that estimation is as important as the work to be done in so- ware and systems development. You can manage what you can measure! Readers will find in this book a collection of lessons learned from the worldwide “metrics community,” which we have documented and enhanced with our own experiences in the field of software measurement and estimating. Our goal is to support our readers to harvest the benefits of estimating and - prove their software development processes. We present the 5 ISO/I- acknowledged Functional Sizing Methods with variants, experiences, counting rules, and case studies – and most importantly, illustrate through practical - amples how to use functional size measurement to produce realistic estimates. The book is written in a practical manner, especially for the busy practitioner community. It is aimed to be used as a manual and an assistant for everyday work.
Explains ISO/IEC standards specific to software measurement and Functional Size Measurement (the 14143 series) Details the five most popular and ISO/IEC accepted Functional Size Measurement standards including: IFPUG, COSMIC, FiSMA, Mark II, and NESMA Presents various other software sizing methods including use case points, object points, and academic approaches Complete, with many real-world examples and hands-on checklists Based on the authors' many years of experience, two internationally renowned experts from Germany and the US Provides many pointers to Internet resources and international metrics organizations Includes supplementary material: sn.pub/extras
Autor*in
Manfred Bundschuh
Themen in »The IT Measurement Compendium«
Function Point Analysis Information Technology (IT) Object-Oriented Metrics Requirements Engineering Software Measurement benchmark control data warehouse development management organization project management quality assurance software stan
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"This is a most useful and practical book. It should be on every project manager's desk as a handy reference on all things dealing with software measurement, estimation, benchmarking, and process improvement. Easy to read, easy to understand, and easy to apply !"
Peter R. Hill, CEO, International Software Benchmarking Standards Group
"Carol Dekkers and Manfred Bundschuh have written an excellent book that should be added to the collections of all software managers and software metrics workers throughout the world.
Measurement and estimation of software projects has been extremely difficult for both technical and sociological reasons. The technical reasons include scores of poorly defined and incompatible metrics, gaps or "leakage" from historical data, and a rather sparse collection of accurate benchmarks that were available to the general software community.
The sociological reasons center around the adversarial relationships between followers of rival metrics and measurement practices. For many years the "lines of code" metrics users have been at odds with the "function point" metrics users. Several other forms of measurement such as Earned Value, Balanced Scorecards, and Goal-Question metrics also have supporters, and tend to ignore other forms of metrics.
In recent years the situation has become even more complex. As of 2008 there are at least 24 function point variants, five methods for counting lines of code, and perhaps 15 other forms of measurement such as Use Case Points, Story Points, object-oriented metrics, and others too numerous to cite.
Dekkers and Bundschuh navigate this tricky area with clarity and objectiveness. All of the major metrics variants are discussed and explained, and their pros and cons are noted.
The book also discusses the organizations that are trying to eliminate competition among the rival metrics camps, and achieve some kind of consensus on what needs to be measured and how to go about it. Although there is still antagonism among the various rivals, this new book by Dekkers and Bundschuh is likely to be useful in leading to common goals and mutual understanding of what the various metrics were trying to accomplish.
Prior to the publication of this book, there was no easy way for followers of various metrics to learn about the other possibilities. While there are many books that discuss IFPUG function points, COSMIC function points, Goal-Question metrics, Balanced Scorecards, and all the others, this is the first book to try and show all of the major metrics in one volume.
This new book is a worthy companion to older books such as Barry Boehm's Software Engineering Economics, Steve McConnell's Software Estimation, Richard Stutzke's Estimating Software-Intensive Systems, Roger Pressman's Software Engineering - A Practitioner's Approach, Steve Kan's Metrics and Models in Software Engineering, and my own books Estimating Software Costs and Applied Software Measurement. All of these books attempt to show the synergistic relationships among wide-ranging topics, as does this new book by Dekkers and Bundschuh."
Capers Jones, Chief Scientist Emeritus, Software Productivity Research LLC
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