View source for Representativeness & Specification

{{ #isin: Technical Best Practices }}

{{Section overview hint}}

= Representativeness & Specification =

{{Objective
| content = To (a) ensure that Product data and Model(s) are representative of, and accurately specified for, Product Domain as far as is reasonably practical; and (b) guard against unintentional Product and Model behaviour and Outcomes as far as is reasonably practical. 
}}

<div class="noautonum">__TOC__</div>



== 13.1. Product Definition(s)  == 

{{Objective
| content = To (a) ensure the pragmatic formulation and accurate specification of Product Definition(s); (b) minimise Model simplifications, assumptions and ambiguities; and (c) ensure adequate vigil of the non-reducible ones throughout the Product Lifecycle.}}

{| class="wikitable"
! Item nr.
! Item Name and Page
! Control
! Aim
|-
|13.1.1.
| [[R&S Product  Definition(s) Assessment]]
| {{#lst:R&S Product  Definition(s) Assessment|control}}
| {{#lst:R&S Product  Definition(s) Assessment|aim}}
|-
|13.1.2.
| [[Product Assumptions ]]
| {{#lst:Product Assumptions |control}}
| {{#lst:Product Assumptions |aim}}
|-
|13.1.3.
| [[Product Simplifications ]]
| {{#lst:Product Simplifications |control}}
| {{#lst:Product Simplifications |aim}}
|-
|13.1.4.
| [[Product Limits ]]
| {{#lst:Product Limits |control}}
| {{#lst:Product Limits |aim}}
|-
|13.1.5.
| [[R&S Problem Definition Review]]
| {{#lst:R&S Problem Definition Review|control}}
| {{#lst:R&S Problem Definition Review|aim}}
|-
|}

== 13.2. Exploration  == 

{{Objective
| content = To (a) ensure that Model dataset(s) correspond to the Product Definition in sufficient detail, completeness and without material unambiguity; and (b) to identify associated risks in order to ensure an adequate vigil throughout the Product Lifecycle. }}

{| class="wikitable"
! Item nr.
! Item Name and Page
! Control
! Aim
|-
|13.2.1.
| [[Data Subjectivity ]]
| {{#lst:Data Subjectivity |control}}
| {{#lst:Data Subjectivity |aim}}
|-
|13.2.2.
| [[Heterogeneous Variable Simplification ]]
| {{#lst:Heterogeneous Variable Simplification |control}}
| {{#lst:Heterogeneous Variable Simplification |aim}}
|-
|13.2.3.
| [[Hidden Variables ]]
| {{#lst:Hidden Variables |control}}
| {{#lst:Hidden Variables |aim}}
|-
|13.2.4.
| [[Selection Function ]]
| {{#lst:Selection Function |control}}
| {{#lst:Selection Function |aim}}
|-
|13.2.5.
| [[Feature Constraints]]
| {{#lst:Feature Constraints|control}}
| {{#lst:Feature Constraints|aim}}
|-
|}

== 13.3. Development  == 

{{Objective
| content = To (a) ensure that Model design is sufficiently specified to represent Product Domain(s) and the Product Definition(s) as much as is reasonably practical; and (b) minimise the risks of (i) adverse effects from the Model's optimisation leading to unintended loopholes and local optima, and (ii) mis-balancing competing optimisation requirements in Model design and development.                }}

{| class="wikitable"
! Item nr.
! Item Name and Page
! Control
! Aim
|-
|13.3.1.
| [[Target Subjectivity ]]
| {{#lst:Target Subjectivity |control}}
| {{#lst:Target Subjectivity |aim}}
|-
|13.3.2.
| [[Target Proxies]]
| {{#lst:Target Proxies|control}}
| {{#lst:Target Proxies|aim}}
|-
|13.3.3.
| [[Target Proxy vs. True Target of Interest Contrasting]]
| {{#lst:Target Proxy vs. True Target of Interest Contrasting|control}}
| {{#lst:Target Proxy vs. True Target of Interest Contrasting|aim}}
|-
|13.3.4.
| [[Heterogeneous Target Variable Simplification ]]
| {{#lst:Heterogeneous Target Variable Simplification |control}}
| {{#lst:Heterogeneous Target Variable Simplification |aim}}
|-
|13.3.5.
| [[Cost Function Specification & Optimisation ]]
| {{#lst:Cost Function Specification & Optimisation |control}}
| {{#lst:Cost Function Specification & Optimisation |aim}}
|-
|13.3.6.
| [[Importance Weighting ]]
| {{#lst:Importance Weighting |control}}
| {{#lst:Importance Weighting |aim}}
|-
|13.3.7.
| [[Asymmetric Error Weights ]]
| {{#lst:Asymmetric Error Weights |control}}
| {{#lst:Asymmetric Error Weights |aim}}
|-
|13.3.8.
| [[Feature Weighting ]]
| {{#lst:Feature Weighting |control}}
| {{#lst:Feature Weighting |aim}}
|-
|13.3.9.
| [[Output Interpretation(s)]]
| {{#lst:Output Interpretation(s)|control}}
| {{#lst:Output Interpretation(s)|aim}}
|-
|13.3.10.
| [[Time-dependent Data Modeling]]
| {{#lst:Time-dependent Data Modeling|control}}
| {{#lst:Time-dependent Data Modeling|aim}}
|-
|}

== 13.4. Production  == 

{{Objective
| content = To ensure that the Implementation of the Product and Model(s) align with and represent Product Definition(s) and Product Domain(s).  }}

{| class="wikitable"
! Item nr.
! Item Name and Page
! Control
! Aim
|-
|13.4.1.
| [[Asymmetric Error Costs]]
| {{#lst:Asymmetric Error Costs|control}}
| {{#lst:Asymmetric Error Costs|aim}}
|-
|13.4.2.
| [[Output Interpretation(s) - Production ]]
| {{#lst:Output Interpretation(s) - Production |control}}
| {{#lst:Output Interpretation(s) - Production |aim}}
|-
|}