A Rationale-based Model for Architecture Design Reasoning

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10.3. Reasoning about change impact with AREL Figure 10.4: Payment Messaging Design: Security message design. In Figure 10.5(a), requirement R2 3 5 specifies that the system has to handle multiple bank connections and requirement R4 1 3 specifies that payment messages must be properly acknowledged. These requirements cannot be compromised or changed and so their prior probabilities are set to 1 (or 100%) 3 . Similarly, requirements 2 5 1 and R2 5 2 specify no loss and no duplicate processing is allowed, their prior probabilities are set to 1. Requirements R2 3 1 specifies that the daily transaction is 8000 high-value payment messages per day, this can change over time and its prior probability is set to 0.6. 3 The probability can be represented by a number between 0 to 1 or its equivalent in percentage point between 0% to 100% 179
10.3. Reasoning about change impact with AREL Decision AR10 depends on four requirements (i.e. R2 3 1, R2 3 4, R2 3 5 and R4 1 3 ). From the conditional probability table (CPT), R4 1 3 is more influential to AR10 than the other three requirements because when it becomes volatile, the probability that AR10 is valid drops to 0.2. (i.e. P (AR10 = V |R2 3 1 = S, R2 3 4 = S, R2 3 5 = S, R4 1 3 = V ) = 0.2) The influence is due mainly to whether acknowledgement message should be processed asynchronously or not. (a) (b) Figure 10.5: A BBN Representation with prior probabilities/CPTs of a Payment Message Design: (a) Asynchronous Message Processing (b) Security AR14 depends on requirements R2 5 1, R2 5 2 and design C4 2 4. However, C4 2 4 180
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A Rationale-based Model for Archite
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maintenance. These techniques can h
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Declaration This thesis contains no
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2.2.6 DoD Architecture Framework .
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5.4.6 Risk assessment in architectu
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8.2 The architecture rationalisatio
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12.2 Contributions . . . . . . . .
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6.10 ≪AR≫ and ≪AAR≫ Stereot
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11.13A Process to Synchronise Chang
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5.13 Design Rationale Helps Evaluat
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that architecture design is highly
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1.2. Research motivations and resea
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1.2. Research motivations and resea
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1.4. Structure of the thesis the ch
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Part I Problem Analysis 10
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2.1. Industry practice of design ra
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2.2. Architecture frameworks and de
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Chapter 3 Related work in design ra
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3.2. Why do we need design rational
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3.2. Why do we need design rational
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3.3. Existing methods for capturing
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3.4. Other related studies 3.3.7 Qu
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3.4. Other related studies evolutio
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3.5. How well design rationale meth
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3.5. How well design rationale meth
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Chapter 4 Research methodology and
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4.1. Software engineering research
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4.2. The chosen research and valida
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Part II Architecture Design Rationa
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on a regular basis. Their inputs ha
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5.1. Architecture rationale in the
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5.2. Survey methodology data collec
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5.3. Survey findings experience). I
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5.3. Survey findings Table 5.1: Fre
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5.3. Survey findings Business Goals
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5.3. Survey findings 5.3.5 Document
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5.3. Survey findings Table 5.8 summ
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5.3. Survey findings We used Spearm
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5.3. Survey findings previous desig
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5.4. Discussion of findings Since t
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5.4. Discussion of findings or cons
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5.5. Limitations and use design rat
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Part III The Representation and App
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6.1. A conceptual model for design
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6.2. Architecture Rationale and Ele
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6.2. Architecture Rationale and Ele
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6.3. Architecture elements Figure 6
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6.4. Architecture rationale Figure
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6.4. Architecture rationale • ris
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6.4. Architecture rationale depicts
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6.5. The extended AREL To prevent c
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6.6. A UML representation of AREL a
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6.6. A UML representation of AREL a
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6.7. AREL usability AE by ≪AEsupe
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6.8. Summary The AREL model is exte
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7.1. The EFT system reasoning, a co
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7.1. The EFT system The processing
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7.1. The EFT system not chosen beca
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7.1. The EFT system Figure 7.5: Int
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7.1. The EFT system sequence checki
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7.1. The EFT system Figure 7.7: Dec
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7.1. The EFT system Therefore, in a
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7.1. The EFT system Figure 7.10: De
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7.2. An empirical study to validate
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Page 147 and 148: 7.2. An empirical study to validate
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Page 151 and 152: 7.3. Summary The case study is spec
Page 153 and 154: 8.1. Background Based on these assu
Page 155 and 156: 8.2. The architecture rationalisati
Page 163 and 164: 8.3. Other applications of ARM As d
Page 165 and 166: 8.3. Other applications of ARM Figu
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Page 169 and 170: Chapter 9 Architecture rationale an
Page 171 and 172: 9.1. Background 9.1 Background In t
Page 173 and 174: 9.2. Traceability of architecture r
Page 175 and 176: 9.4. AREL and eAREL traceability ap
Page 185 and 186: Chapter 10 Architecture decision de
Page 187 and 188: 10.1. Background 10.1.2 Introductio
Page 189 and 190: 10.2. Building a BBN to represent a
Page 197: 10.3. Reasoning about change impact
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Page 209 and 210: 10.5. Summary design object may cau
Page 211 and 212: 11.1. Capturing architecture design
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Page 215 and 216: 11.2. Checking AREL models Figure 1
Page 217 and 218: 11.3. Tracing AREL models Figure 11
Page 219 and 220: 11.4. Analysing AREL with BBN • S
Page 221 and 222: 11.5. Limitations Figure 11.13: A P
Page 223 and 224: Chapter 12 Conclusions 12.1 Summary
Page 225 and 226: 12.2. Contributions reasoning metho
Page 227 and 228: 12.2. Contributions implementations
Page 229 and 230: 12.3. Future work architecture deci
Page 231 and 232: 12.3. Future work to examine the co
Page 233 and 234: BIBLIOGRAPHY [10] B. W. Boehm, Soft
Page 235 and 236: BIBLIOGRAPHY [37] A. Eden and R. Ka
Page 237 and 238: BIBLIOGRAPHY [62] J. D. Herbsleb an
Page 239 and 240: BIBLIOGRAPHY [89] N. Lassing, D. Ri
Page 241 and 242: BIBLIOGRAPHY [115] D. L. Parnas,
Page 243 and 244: BIBLIOGRAPHY [142] Z. Simsek and J.
Page 245 and 246: BIBLIOGRAPHY [167] W. F. Tichy, N.
Page 247 and 248: Appendix A AREL Tool User Manual 1
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4.1 AREL Check Model When the Check
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4.2 AREL Model Tracing AREL model t
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Figure 9 - result of downward trace
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To initiate the graph’s creation,
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onto the diagram 14 Assign values t
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Useful Definitions The following ar
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) Some projects only c) Not at all
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19. I revisit architecture design d
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Complaint Procedure If you have any
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Privacy Protection Only investigato
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B. Exploring design reasoning. 1. W
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3. Why does the system use asynchro
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C. General Comments on AREL Modelli
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IEEE Computer Society Press. A. Tan
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A Rationale-based Model for Architecture Design Reasoning

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