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Annex A
Conformity of the Process Assessment Model
Introduction
For ease of reference, the requirements from Clause 6.3 of ISO/IEC 15504-2 are embedded verbatim in the text. The Process Assessment Model is constructed to be an elaboration of the Automotive SPICE Process Reference Model that in turn is derived from ISO/IEC 12207 AMD 1 and 2, and a subset of the measurement framework from ISO/IEC 15504-2 that is elaborated in ISO/IEC 15504-5.
Requirements for Process Assessment Models (from ISO/IEC 15504-2)
Introduction
In order to assure that assessment results are translatable into an ISO/IEC 15504 process profile in a repeatable and reliable manner, Process Assessment Models shall adhere to certain requirements. A Process Assessment Model shall contain a definition of its purpose, scope and elements; its mapping to the Measurement Framework and specified Process Reference Model(s); and a mechanism for consistent expression of results. A Process Assessment Model is considered suitable for the purpose of assessing process capability by conforming to 6.3.2, 6.3.3, and 6.3.4. [ISO/IEC 15504-2, 6.3.1]
The purpose of this Process Assessment Model is to support assessment of process capability in the automotive domain in accordance with the requirements of ISO/IEC 15504-2.
Process Assessment Model scope
6.3.2.1 A Process Assessment Model shall relate to at least one process from the specified Process Reference Model(s).
6.3.2.2 A Process Assessment Model shall address, for a given process, all, or a continuous subset, of the levels (starting at level 1) of the Measurement Framework for
process capability for each of the processes within its scope.
NOTE It would be permissible for a model, for example, to address solely level 1, or to address levels 1, 2 and 3, but it would not be permissible to address levels 2 and 3 without level 1.
6.3.2.3 A Process Assessment Model shall declare its scope of coverage in the terms of:
a) the selected Process Reference Model(s);
b) the selected processes taken from the Process Reference Model(s);
c) the capability levels selected from the Measurement Framework.
[ISO/IEC 15504-2, 6.3.2]
The Process Assessment Model is based upon the Automotive SPICE Process Reference Model that is itself derived from ISO/IEC 12207 AMD 1 and AMD 2. A statement of compliance of the Automotive SPICE Process Reference Model is provided in the Automotive SPICE Process reference Model document. In the process dimension of the Process Assessment Model, the model provides coverage of all the processes in the Automotive SPICE Process Reference Model. In the capability dimension of this Process Assessment Model, the model addresses all of the capability levels defined in the Measurement Framework in ISO/IEC 15504-2.
Process Assessment Model elements and indicators
A Process Assessment Model shall be based on a set of indicators that explicitly addresses the purposes and outcomes, as defined in the selected Process Reference Model, of all the processes within the scope of the Process Assessment Model; and that demonstrates the achievement of the process attributes within the capability level scope of the Process Assessment Model. The indicators focus attention on the implementation of the processes in the scope of the model. [ISO/IEC 15504-2, 6.3.3]
The Process Assessment Model provides a two-dimensional view of process capability for the processes in the Process Reference Model, through the inclusion of assessment indicators as shown in Figure 3. The Assessment Indicators used are:
-
base practices and work products; and-
generic practices and generic resourcesas shown in Figure 3. They support the judgment of the performance and capability of an implemented process.
Mapping Process Assessment Models to Process Reference Models
A Process Assessment Model shall provide an explicit mapping from the relevant elements of the model to the processes of the selected Process Reference Model and to the relevant process attributes of the Measurement Framework.
The mapping shall be complete, clear and unambiguous. The mapping of the indicators within the Process Assessment Model shall be to:
a) the purposes and outcomes of the processes in the specified Process Reference Model;
b) the process attributes (including all of the results of achievements listed for each process attribute) in the Measurement Framework.
This enables Process Assessment Models that are structurally different to be related to the same Process Reference Model. [ISO/IEC 15504-2, 6.3.4]
Each of the Processes in this Process Assessment Model is identical in scope to the Process defined in the Process Reference Model. Each Base Practice and Work Product is cross-referenced to the Process Outcomes it addresses. All Work Products relate as Outputs to the Process as a whole. Each of the Process Attributes in this Process Assessment Model is identical to the Process Attribute defined in the Measurement Framework in ISO/IEC 15504-2. The Generic Practices address the characteristics from each Process Attribute. The Generic Resources relate to the Process Attribute as a whole.
Table A.1 lists the mappings of the GPs to the achievements associated with each Process Attribute.
Table A.1 - Mapping of Generic Practices
| GP | Practice Name | Maps To |
| PA 1.1: Process performance attribute | ||
| GP 1.1.1 | Achieve the process outcomes. | PA.1.1.a |
| PA 2.1: Performance management attribute | ||
| GP 2.1.1 | Identify the objectives for the performance of the process. | PA.2.1.a |
| GP 2.1.2 | Plan and monitor the performance of the process to fulfill the identified objectives. | PA.2.1.b |
| GP 2.1.3 | Control the performance of the process. | PA.2.1.c |
| GP 2.1.4 | Define responsibilities and authorities for performing the process. | PA.2.1.d |
| GP 2.1.5 | Identify and make available resources to perform the process according to plan. | PA.2.1.e |
| GP 2.1.6 | Manage the interfaces between involved parties. | PA.2.1.f |
| PA 2.2: Work product management attribute | ||
| GP 2.2.1 | Define the requirements for the work products. | PA.2.2.a |
| GP 2.2.2 | Define the requirements for documentation and control of the work products. | PA.2.2.b |
| GP 2.2.3 | Identify, document and control the work products.; | PA.2.2.c |
| GP 2.2.4 | Review and adjust work products to meet the defined requirements | PA.2.2.d |
| PA 3.1: Process definition attribute | ||
| GP 3.1.1 | Define the standard process that will support the deployment of the defined process. | PA.3.1.a |
| GP 3.1.2 | Determine the sequence and interaction between processes so that they work as an integrated system of processes. | PA.3.1.b |
| GP 3.1.3 | Identify the roles and competencies for performing the process. | PA.3.1.c |
| GP 3.1.4 | Identify the required infrastructure and work environment for performing the process. | PA.3.1.d |
| GP 3.1.5 | Determine suitable methods to monitor the effectiveness and suitability of the process. | PA.3.1.e |
| PA 3.2: Process deployment attribute | ||
| GP 3.2.1 | Deploy a defined process that satisfies the context specific requirements of the use of the standard process. | PA.3.2.a |
| GP 3.2.2 | Assign and communicate roles, responsibilities and authorities for performing the defined process. | PA.3.2.b |
| GP 3.2.3 | Ensure necessary competencies for performing the defined process. | PA.3.2.c |
| GP.3.2.4 | Provide resources and information to support the performance of the defined process. | PA.3.2.d |
| GP 3.2.5 | Provide process infrastructure to support the performance of the defined process. | PA.3.2.e |
| GP 3.2.6 | Collect and analyze data about performance of the process to demonstrate its suitability and effectiveness. | PA.3.2.f |
| PA 4.1 Process measurement attribute | ||
| GP 4.1.1 | Identify process information needs, in relation with business goals. | PA.4.1.a |
| GP.4.1.2 | Derive process measurement objectives from process information needs. | PA.4.1.b |
| GP 4.1.3 | Establish quantitative objectives for the performance of the defined process, according to the alignment of the process with the business goals. | PA.4.1.c |
| GP 4.1.4 | Identify product and process measures that support the achievement of the quantitative objectives for process performance. | PA.4.1.d |
| GP 4.1.5 | Collect product and process measurement results through performing the defined process. | PA.4.1.e |
| GP 4.1.6 | Use the results of the defined measurement to monitor and verify the achievement of the process performance objectives. | PA.4.1.f |
| PA 4.2 Process control attribute | ||
| GP 4.2.1 | Determine analysis and control techniques, appropriate to control the process performance. | PA.4.2.a |
| GP 4.2.2 | Define parameters suitable to control the process performance. | PA.4.2.b |
| GP 4.2.3 | Analyze process and product measurement results to identify variations in process performance. | PA.4.2.c |
| GP 4.2.4 | Identify and implement corrective actions to address assignable causes. | PA.4.2.d |
| GP.4.2.5 | Re-establish control limits following corrective action. | PA.4.2.e |
| PA 5.1 Process innovation attribute | ||
| GP 5.1.1 | Define the process improvement objectives for the process that support the relevant business goals. | PA.5.1.a |
| GP 5.1.2 | Analyse measurement data of the process to identify real and potential variations in the process performance. | PA.5.1.b |
| GP 5.1.3 | Identify improvement opportunities of the process based on innovation and best practices. | PA.5.1.c |
| GP.5.1.4 | Derive improvement opportunities from new technologies and process concepts. | PA.5.1.d |
| GP 5.1.5 | Define an implementation strategy based on long-term improvement vision and objectives. | PA.5.1.e |
| PA 5.2 Process optimization attribute | ||
| GP 5.2.1 | Assess the impact of each proposed change against the objectives of the defined and standard process. | PA.5.2.a |
| GP 5.2.2 | Manage the implementation of agreed changes according to the implementation strategy. | PA.5.2.b |
| GP 5.2.3 | Evaluate the effectiveness of process change on the basis of actual performance against process objectives and business goals. | PA.5.2.c |
Expression of assessment results
A Process Assessment Model shall provide
a formal and verifiable mechanism for
representing the results of an assessment as a set of process attribute
ratings for each
process selected from the specified Process Reference Model(s).
NOTE The expression of results may involve a direct translation of Process
Assessment
Model ratings into a process profile as defined in this international
standard, or the conversion
of the data collected during the assessment (with the possible inclusion of
additional
information) through further judgment on the part of the assessor.
[ISO/IEC 15504-2, 6.3.5]
The processes in this Process Assessment Model are identical to those defined in
the Automotive SPICE Process Reference Model. The Process Attributes and the
Process Attributes Rating in this Process Assessment Model are identical to
those defined in the Measurement Framework in ISO/IEC 15504-2. As a consequence,
results of Assessments based upon this Process Assessment Model are expressed
directly as a set of process attribute ratings for each process within the scope
of the assessment. No form of translation or conversion is required.
