Conceptual Association of Functional Size Measurement Methods

Demirörs, Onur
Gencel, Cigdem
Functional size determines how much functionality software provides by measuring the aggregate amount of its cohesive execution sequences. Alan Albrecht first introduced the concept in 1979. Since he originally described the function point analysis (FPA) method, researchers and practitioners have developed variations of functional size metrics and methods. The authors discuss the conceptual similarities and differences between functional size measurement methods and introduce a model for unification.


A Functional software measurement approach bridging the gap between problem and solution domains
Ungan, Erdir; Demirörs, Onur; Department of Information Systems (2013)
There are various software size measurement methods that are used in various stages of a software project lifecycle. Although functional size measurement methods and lines of code measurements are widely practiced, none of these methods explicitly position themselves in problem or solution domain. This results in unreliable measurement results as abstraction levels of the measured artifacts vary greatly. Unreliable measurement results hinder usage of size data in effort estimation and benchmarking studies. ...
An Error prevention model for cosmic functional size measurement method
Salmanoğlu, Murat; Demirörs, Onur; Department of Information Systems (2012)
Estimation and measurement of the size of software is crucial for project management activities. Functional size measurement is one of the most frequently used methods to measure size of software and COSMIC is one of the popular methods for functional size measurement. Although precise size measurement is critical, the results may differ because of the errors made in the measurement process. The erroneous measurement results cause lack of confidence for the methods as well as reliability problems for effort...
A Software functionality model for functional size measurement
Özkan, Barış; Demirörs, Onur; Department of Information Systems (2012)
Functional size is among the few software size measures for which well-structured and standardized methods exists for its measurement. Although Functional Size Measurement(FSM) methods have gone a long way, one ongoing criticism on FSM methods is the discrepancies in the measurement results of the same software obtained by different measures. In this thesis study the sources of discrepancies that involve the functional properties of measurands and constructs of the FSM method models are investigated in two ...
An Ontology based approach to requirements reuse problem in software product lines
Karataş, Elif Kamer; Birtürk, Ayşenur; Department of Computer Engineering (2012)
With new paradigms in software engineering such as Software Product Lines, scope of reuse is enlarged from implementation upto design, requirements, test-cases, etc. In this thesis an ontology-based approach is proposed as a solution to systematic requirement reuse problem in software product lines, and the approach is supported with a reuse automation tool. A case study is performed on the projects of an industrial software product line using hereby proposed solution and then based on the evaluated metrics...
An Agile business process software development methodology
Çulha, Davut; Doğru, Ali Hikmet; Department of Computer Engineering (2014)
An agile business process software development methodology is proposed, developed and tested in this research. To speed up the business process software development practices in the organization and to address the requirements more efficiently, an agile approach was adapted. Two new processes were developed using the new methodology. The improvement was assessed by utilizing nine older developments: A formula was developed in this research that estimates the development efforts for old business process soft...
Citation Formats
O. Demirörs and C. Gencel, “Conceptual Association of Functional Size Measurement Methods,” IEEE SOFTWARE, pp. 71–78, 2009, Accessed: 00, 2020. [Online]. Available: