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|Title: ||Investigating the contribution of analysis patterns to the process and products of object modeling|
|Other Titles: ||Yan jiu fen xi mo shi dui wu jian jian mo guo cheng he jie guo de zuo yong|
|Authors: ||Leung, Sik Ka (梁錫嘉)|
|Department: ||Department of Information Systems|
|Degree: ||Doctor of Philosophy|
|Issue Date: ||2007|
|Publisher: ||City University of Hong Kong|
|Subjects: ||Object-oriented methods (Computer science)|
|Notes: ||CityU Call Number: QA76.9.O35 L48 2007|
xii, 148 leaves : ill. 30 cm.
Thesis (Ph.D.)--City University of Hong Kong, 2007.
Includes bibliographical references (leaves 98-109)
|Abstract: ||Numerous controls and testing at design level have been introduced to guarantee the
success of a software project; however, the major reasons behind software project
failures and reworks are attributed to inaccurate or incomplete information requirements
gathered during the system analysis phase. Overall quality of requirements captured in
the early phases of system development contributes significantly to the project success.
Object models are considered as important artifacts that represent requirements resulting
from object-oriented analysis (OOA).
Although several guidelines are available for object modeling, developing quality object
models has always been considered a challenging task. This research aims to investigate
the role of analysis patterns in providing assistance to novice analysts for improved
performance and quality of object modeling. The research approach considers both the
technical and the behavioral aspects of object modeling. For the technical aspect, an
analysis patterns module is built as an extension to an open source CASE tool. This
extension is used to assist system analysts by offering guidance in using analysis patterns
while creating object models. For the behavioral aspect, the research model presented by
Batra et al. (1990) is used as the guiding framework for studying the relationship
between pattern-based object modeling and the overall analysts’ performance.
Laboratory experiments with two groups were conducted to investigate the contribution
of the object-oriented analysis patterns (OOAP) to the quality of ensuing object models.
The performance of novice analysts in completing the modeling task was also compared.
Questionnaires were used to collect the data regarding the perception of the participants on the modeling approach from the two experimental groups. Finally, follow-up
interviews were conducted to triangulate those earlier findings and also to provide an indepth
understanding of object modeling process using analysis patterns.
The quality of object models created by the participants was analyzed using the
conceptual quality framework proposed by Lindland et al. (1994). The results indicate
that novice analysts with the help of OOAP performed faster and produced better overall
quality object models. The differences were significant in both the semantic and
pragmatic quality of object models. There was no significant difference in the perception
of participants belonging to the treatment and control groups; this indicates that using
OOAP does not cause any hindrance to the modeling process. The data collected from
the interview provide further insights into the benefits of OOAP in identifying missing
classes, associations and aggregations.
The results from this research have important research and practical contributions to both
teaching and industry. The superior semantic quality confirms the role of analysis
patterns in identifying missing elements and invalid relationship multiplicities. Thus,
incorporating pattern-based support into CASE tools can be valuable in helping novice
analysts in the development of more complete and valid object models. Further, this
study provides clues about common errors committed by novice systems analysts in
business object modeling. The results, therefore, can also be employed to address
difficulties in teaching and learning object modeling.
Keywords: Analysis Patterns, CASE Tool Support, Conceptual Modeling, Objectoriented
Analysis, Quality of object models|
|Online Catalog Link: ||http://lib.cityu.edu.hk/record=b2268753|
|Appears in Collections:||IS - Doctor of Philosophy |
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