Using DEMATEL to Analyze the Quality Characteristics of Mobile Applications

Wen-Ming Han, Cheng-Hsien Hsu & Cheng-Yu Yeh

Takming University of Science and Technology, Taiwan

Reporter : Cheng-Yu Yeh1/17

FIEMS 2014

Abstract

• This study applied DEMATEL to analyze Mobile APP quality characteristics from the perspectives of Developers and Users.

• According to the results, users regard security as the most important quality characteristic, while functional suitability, usability and reliability are regarded as the most important quality characteristics by developers.

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Overview

• Mobile App is the software on smartphones, tablets and other mobile devices.

• ABI Research(2013). The Mobile App Market will be Worth $27 Billion USD($168 Billion RMB) in 2013 as Tablet Revenue Grows.

• Despite many mobile Apps are creative, the negligence of the key factor, namely product quality, has led to usage problems and negative reviews.

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Introduction

The purposes of this study are the following :

1) To explore the Mobile App software product quality characteristics to clearly grasp the facts about Mobile App quality and provide mobile App developers with a clear quality vision for planned control.

2) To explore the cognitive differences regarding quality characteristics from the perspectives of developers and users.

The developers can find out whether their products meet the quality expectation of the users, and carry out the proper control and quality improvement plan under limited resources.

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Previous Works

• Behshid. B., Mohsen. K., Mohammad. K. A., (2009)• Customizing ISO 9126 quality model for evaluation of B2B applications

• International Organization for Standardization, ISO/IEC 25010. (2011)• Systems and software engineering — Systems and software Quality

Requirements and Evaluation. (SQuaRE) — System and software quality.

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What is software quality?

http://www.cse.dcu.ie/essiscope/sm2/charact.html6/17

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Quality

7

• Q = P/E

• Q：Quality of Products / Services

• P：Provide the feature of the Products / Services（Performance）

• E：Fit the needs of customer expectations

Quality Software Management

(Gerald M. Weinberg, 2006)

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ISO 25010 Quality Model

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DEMATEL Analysis Method

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Result

The direct and indirect effects of the Quality

Characteristics under user'sperspective.

Quality Characteristics D R D+R D-R

Functional Suitability 14.583 15.573 30.156 -0.990

Reliability 14.143 14.799 28.943 -0.656

Usability 14.301 15.144 29.445 -0.843

Performance efficiency 14.011 13.764 27.775 0.246

Portability 14.072 14.186 28.258 -0.114

Maintainability 14.325 13.282 27.607 1.043

Compatibility 14.512 13.612 28.124 0.900

Security 15.282 14.868 30.150 0.414

AVG 28.807 0

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Result

The Causal diagram under user's perspective.

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Result

The direct and indirect effects of the Quality Characteristics

under developer'sperspective.

Quality Characteristics D R D+R D-R

Functional Suitability 8.926 8.498 17.424 0.428

Reliability 8.810 7.969 16.779 0.841

Usability 8.770 8.346 17.116 0.424

Performance efficiency 8.000 7.799 15.798 0.201

Portability 6.777 8.130 14.907 -1.353

Maintainability 7.424 8.648 16.072 -1.224

Compatibility 7.321 7.553 14.874 -0.233

Security 8.486 7.570 16.055 0.916

AVG 16.128 0

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Result

The Causal diagram under developer's

perspective.

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Conclusion

•Functional Suitability, Usability and Reliability are quality characteristics perceived as important by both the developer and the user. •Portability is the only quality characteristic that the user and the developer commonly agree. •Both the developer and the user regard Performance efficiencyand Security can affect other quality characteristics

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Comments

•Combine ISO/IEC 25010 system/software product quality architecture to support the use of non-hierarchical structure software product quality model.

•Analyze the Mobile APP product user quality elements by case study to verify the completeness of the proposed research method in this study.

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Thanks for Your Listening

Q & A

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