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Process attribute rating and sensitivity analysis in process assessment
Author(s) -
Jung HoWon
Publication year - 2012
Publication title -
journal of software: evolution and process
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 29
eISSN - 2047-7481
pISSN - 2047-7473
DOI - 10.1002/smr.545
Subject(s) - weighting , sensitivity (control systems) , process (computing) , computer science , reliability engineering , set (abstract data type) , data mining , engineering , medicine , electronic engineering , radiology , programming language , operating system
SUMMARY The capability level of a process assessed on the basis of International Standard ISO/IEC 15504 is determined by utilizing process attributes ratings (PAs). PA rating as a composite indicator is determined by the extent to which outcomes or the implemented practices are achieved. However, the ISO/IEC 15504 standards do not provide recommendations as to assessment methods, including the following: (i) which of the outcomes or practices implemented are evaluated as an intermediate step in rating the PA; and (ii) how a set of their achievements is aggregated into the PA rating. This study addresses a simple additive weighting method based on the performance value and weights of practices implemented as well as its rationale, in order to facilitate consistent and repeatable PA ratings. Then, sensitivity analysis is conducted to evaluate how much a change in the weight or performance value of an implemented practice will affect and alter the current PA rating. Our sensitivity analysis can be employed in cases in which an assessor must explain his/her ratings to assessment team members, as well as the organizational unit assessed. Six examples are provided to illustrate the applications of our sensitivity analyses. Copyright © 2011 John Wiley & Sons, Ltd.