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Software Assessments, Benchmarks, and Best Practices By Capers Jones

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Sales Rank: #1604876 in Books
Published on: 2000-05-11
Released on: 2000-05-01
Original language: English
Number of items: 1
Dimensions: 9.06" h x 1.58" w x 7.32" l, 2.47 pounds
Binding: Paperback
688 pages

From the Inside Flap

During my writing, this book evolved considerably from the first plan. Originally I intended to divide the book into two major sections. The first section was to discuss a number of assessment and benchmark methods used in the United States and Europe. The second section was to present an overview of software productivity and quality benchmarks, and associated "best practices" derived from benchmark studies. The benchmarks and best practices in this book cover six major kinds of software project: (1) management information system (MIS) projects, (2) outsource projects, (3) systems and embedded software projects, (4) commercial software projects, (5) military software projects, and (6) personal software projects developed by end users.

However, as the writing commenced, the focus of the book began to change. It soon became clear that a complete discussion of benchmarks and best practices for each of the six kinds of software would be about twice as large as initially planned. I had planned to devote approximately 30 pages to the benchmark and best-practice information for each type of software. But to do justice to the available data, almost 60 pages were needed for five of the six forms of software. Furthermore, a discussion of how assessment and benchmark studies operate and their technical differences may be of interest to those of us in the assessment and benchmark business, but it is not necessarily of great interest to those outside the limited circle of benchmark consultants.

As a result, the discussion of assessment and benchmark methods was cut back, and the sections devoted to information gathered during assessments and benchmark studies was expanded. Instead of a book with two sections of roughly equal size, the book now has a briefer introductory section and greatly expanded discussions of each type of software and the issues that confront each type.

This book also emphasizes assessments and benchmark data from the United States. Although my colleagues and I have gathered data in more than 24 countries, the issues of international benchmarks are quite complex. The international variations in working years and working days, how overtime is treated, and European restrictions on some kinds of data collection made me decide to concentrate on U.S. data.

Readers should note that this is a book about assessments and benchmarks written by someone who is in the assessment and benchmark business. Because my company has been performing assessments and benchmarks since 1985, we have an obvious interest in the topic. However, this is not a marketing book, nor is it a book about how my company's assessments and benchmarks work. The topics of software assessments and benchmarks are important ones, and this book attempts to include the general principles under which all assessment and benchmark consulting groups operate.

In my view, and also in the view of my competitors, assessments and software benchmarks are important to the global economy. Software is the most labor-intensive product of the twentieth century, and the most error prone. Assessments, benchmarks, and empirical data are on the critical path to minimizing software project failures. Every software project manager, every software quality assurance specialist, and every software engineer should understand the basic concepts of software assessments and benchmarks. This is a view shared by all of the assessment and benchmark consulting groups.

The software industry has achieved a notorious reputation as being out of control in terms of schedule accuracy, cost accuracy, and quality control. A majority of large systems run late, exceed their budgets, and many are cancelled without ever reaching completion. Assessment and benchmarks followed by planned process improvement programs can aid in bringing software under management control. These are not "silver bullet" methods. Assessments, benchmarks, and process improvement programs require effort and can be expensive, but project failures are far more expensive.

This book discusses the kinds of complex software projects that benefit from assessments and benchmark studies. Small and simple projects are not the main focus of assessments and benchmarks. The proper focus of assessments, benchmarks, process improvements, and this book is on large and complex applications.

Chapter 1 provides an introduction to the topic of software assessments and benchmarks. This chapter discusses the kinds of data that should be collected. It also cautions against some common problems, such as depending on data without validating it, and using hazardous metrics such as lines of code. This chapter also discusses the need to keep client data protected, and suggests some coding methods that can be used to perform benchmarks without revealing proprietary client information.

Chapter 2 deals with the history of software process assessments and discusses some of the kinds of information that is gathered during software process assessments. Although more than a dozen forms of assessment exist, the form made popular by the Software Engineering Institute is the best known. Some recent and more specialized forms of assessment, such as those performed for the year 2000 problem, have also been widely used since about 1998.

Chapter 3 deals with the related topics of software benchmarks and software baselines. Benchmarks collect and compare quantitative data against industry norms. Baselines measure the rate at which a company can improve productivity and quality when compared with an initial starting point. Of course, sometimes productivity and quality can get worse instead of better.

Chapter 4 discusses 36 key factors that should be recorded during assessment and benchmark studies. If these 36 key factors are recorded, the data gathered by almost any benchmark and assessment consulting group, or by any company or government agency, could be compared meaningfully.

Chapter 5 addresses an important topic that is somewhat ambiguous in the software literature. When we speak of "best practices" what exactly do we mean? Chapter 5 discusses some criteria for including or excluding tools and technologies from best-practice status. It is suggested that any technology considered a potential best practice needs empirical results from at least ten companies and 50 projects.

Chapter 6 discusses an important follow-on activity to assessment and benchmark studies. Both assessments and benchmark studies are diagnostic in nature, rather than therapeutic. These studies can identify problems, but they cannot cure them. Therefore, a natural follow-on activity to either an assessment or a benchmark analysis, or both, would be to implement a process improvement program.

Chapter 7 deals with benchmarks and best practices for MIS projects. These are software applications that companies and government agencies build for their own internal use. MIS applications are often keyed to large corporate database access, and their main purpose is to convert raw data into useful information. Although MIS projects are often fairly high in productivity for small projects, large MIS projects tend to experience more than average failure rates. Quality at the large end is often poor too.

Chapter 8 deals with benchmarks and best practices for outsource software projects. The emphasis in this chapter is on projects under contract for MIS, rather than for military or systems software outsourcing. The major outsource vendors such as Andersen, Electronic Data Systems, and IBM concentrate on the MIS market because it is the largest market for their services. In general, outsource projects have higher productivity and quality levels than in-house MIS projects; however, litigation between clients and outsourcers does occur from time to time.

Chapter 9 deals with benchmarks and best practices for systems and embedded software, which are applications that control physical devices such as computers, telephone switching systems, aircraft flight controls, or automobile fuel injection systems. The close coupling of systems software to physical hardware devices has led to very sophisticated quality control methods. The systems software community has the best track record for large applications larger than 10,000 function points.

Chapter 10 deals with benchmarks and best practices for commercial software. Commercial software applications are intended for the mass market, and some of these applications are used by millions of customers on a global basis. The commercial and systems software domains overlap in the arena of operating systems because commercial products such as Windows 98 are both systems and commercial software. The commercial world needs to deal with special issues such as translation and nationalization of packages, piracy, and very extensive safeguards against viruses.

Chapter 11 deals with benchmarks and best practices for military software, with special emphasis on the U.S. armed services and the Department of Defense. The military software domain is fairly good at building large and complex applications, although military software productivity is lower than any other domain. The legacy of U.S. military standards has left the defense community with some very cumbersome practices. Plans and specifications in the military domain are approximately three times larger than equivalent civilian projects. The bulk is due primarily to military oversight requirements, rather than to the technical needs of the project.

Chapter 12 deals with benchmarks and best practices for end user software development. As the century ends, there are more than 12,000,000 U.S. office workers who know how to write computer programs if they wish to do so. By the middle of this century, the number of computer-literate workers in the United States will top 125,000,000. Indeed, there are some signs that computer literacy will actually pull ahead of conventional literacy in the sense of being able to read and write. End user applications are currently in a gray area outside the scope of normal assessments and benchmarks. More importantly, end user applications are also in a gray area in terms of intellectual property law. As end user applications become more and more numerous, it is important to set policies and guidelines for these ambiguous applications.

As this book is written, benchmarks based on function point metrics are dominant in the software world, except for military software, in which benchmarks based on lines of code still prevail. This book utilizes function point metrics and cautions against lines-of-code metrics for benchmarks involving multiple programming languages. Version 4.1 of the function point rules defined by the International Function Point Users Group is the standard metric used throughout.

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From the Back Cover

Billions of dollars are wasted each year on IT software projects that are developed and either released late or never used. In light of recent large-scale errors, the methods, tools, and practices used for software development have become the subject of significant study and analysis. One qualitative method for analysis is software assessment, which explores the methodologies used by businesses for software development. Another method of analysis is software benchmarking, which collects quantitative data on such topics as schedules and costs.

Renowned author Capers Jones draws on his extensive experience in economic analysis to present Software Assessments, Benchmarks, and Best Practices , a useful combination of qualitative and quantitative approaches to software development analysis. When assessment data and benchmarking data are analyzed jointly, it is possible to show how specific tools and practices impact the effectiveness of an organization's development efforts. The result is a clearer, bigger picture--a roadmap that allows an organization to identify areas for improvement in its development efforts.

With this book as your guide, you will learn:

To combine assessments and benchmarking for optimal software analysis
To identify best and worst practices for software development
To improve software quality and application effectiveness
To reduce costs of software maintenance by avoiding software errors

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About the Author

Capers Jones is a leading author and speaker on software productivity and measurement as well as the acknowledged expert on the economic impact of the year 2000 software problem. He is a frequent speaker at software engineering conferences. Formerly a senior researcher at IBM's Santa Teresa software laboratory and Assistant Director of Applied Technology at the ITT Programming Technology Center, Jones is Chairman and Founder of Software Productivity Research. He is also a member of IEEE Computer Society and the International Function Point Users Group (IFPUG).

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