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| Role name | Definition/comment | Activities (as per Figure 4) |
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| Quality Assurance (QA) Manager | Responsible for leading a measurement and evaluation project (MEProject in Table 2) regarding the requester needs. Note this role is specified by three subroles as per Figure 5. | Note this role is responsible of the activities involved in three specific subroles as per Figure 5. |
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| Nonfunctional requirements manager | Responsible for the nonfunctional requirements project. This role should be played by a nonfunctional requirement engineer. | (i) Define non-functional requirements |
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| Measurement manager | Responsible for leading a measurement project. | (i) Design the measurement
(ii) Implement the measurement |
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| Evaluation manager | Responsible for leading an evaluation project. | (i) Design the evaluation
(ii) Implement the evaluation |
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| Evaluation requester | Responsible for requesting an evaluation. Note that this role can be accomplished by a human or an organization. | (i) Define nonfunctional requirements
(ii) Design the measurement
(iii) Design the evaluation |
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| Metrics expert | Responsible for identifying the appropriate metrics from a catalogue for each attribute of the requirements tree, based on the established information need. | (i) Design the measurement |
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| Data collector | Responsible for gathering measures of the attributes using the metrics specification. Note that the data collector role can be accomplished by either a human agent or an automatic agent. | (i) Implement the measurement |
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| Indicators expert | Responsible for identifying the most appropriate indicators from a catalogue and to define decision criteria for each attribute and calculable concept of the requirements tree based on the established information need. | (i) Design the evaluation |
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| Indicator calculator | Responsible for calculating the indicators values using the indicators specification. Note this role usually is accomplished by an automatic agent. | (i) Implement the evaluation |
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| Analysis Designer | Responsible for identifying the appropriate data analysis methods and techniques to be used regarding scales, scale types, and the project/business commitment in addition to visualization and documentation techniques. | (i) Analyze and Recommend |
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| Data analyzer | Responsible for conducting the data analysis based on the design of the analysis. Note this role can be accomplished by either a human agent or an automatic agent or both. | (i) Analyze and recommend |
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| Recommender | Responsible for conducting the recommendations based on the conclusion report and taking into account the business commitment. | (i) Analyze and recommend |
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| Results communicator | Responsible for communicating the evaluation results and recommendations to the evaluation requester. | (i) Analyze and recommend |
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