PSD.9 - Represent Values and Trade-Offs
Type: DPF pattern body Status: Candidate
Primary working result: a decision-usable value account: attributed concerns and objectives, their consequence measures, protected conditions, admitted trade-offs, unresolved disagreements, and limits for one named comparison.
PSD.9:1 - Problem frame
Use this when a scorecard’s criteria came from a template, “importance” weights have no stated meaning, or the same benefit appears under several headings. Also use it when people agree that reliability, development, safety, or fairness matters but mean different consequences for different subjects.
Begin with one concern: important to whom, about which subject and situation, and why? Trace it to a consequence that could distinguish the live alternatives. Then state how that consequence will be represented and whether it may be traded against another. The gain is a comparison whose value assumptions can be understood and challenged.
The governed object is the value account for that comparison. An objective expresses what is wanted; a measure describes a characteristic; a preference orders consequences; a protected condition limits permissible trade-offs. They can be related without becoming the same thing. Neither an expressed preference nor a numerical weight supplies authority to waive a duty or another person’s rights.
Do not use this pattern when a current, qualified value account already answers the exact comparison question. Use the direct measurement practice for a missing measurement alone, the appropriate authority or domain practice for a condition’s current force, and C.11.DUA for a disputed requirement’s justification. Use the authorized choice owner for the later decision. This pattern does not determine universally correct values.
PSD.9:2 - Problem
Criteria can appear neutral while deciding the result. “Install more pumps” embeds an action in an objective. “Service quality” may count the same avoided outage again under reliability, satisfaction, and reputation. Equal weights may silently favor the concern represented by the largest number of criteria.
Numbers can conceal a second substitution. A budget amount, a probability, an ordinal judgement, and a protected condition become interchangeable entries in a spreadsheet. Normalizing each to zero–one does not establish comparable value. A mean of participants’ weights can erase a disagreement about who bears the consequence or what may be traded at all.
PSD.9:3 - Forces
| Force | Tension |
|---|---|
| Completeness and usability | Material values must remain visible, while an enormous hierarchy burdens elicitation and repeats consequences. |
| Measurement and meaning | Observable measures help comparison, while easily measured proxies can displace the actual concern. |
| Trade-offs and protection | Some sacrifices are legitimate within the question; others require a separate authority or are outside permissible compensation. |
| Individual and collective values | A common comparison is useful, while unlike participants need not share one value function. |
| Precision and honest incompleteness | Explicit scales and preference questions can clarify a choice, while unsupported weights create false precision. |
PSD.9:4 - Solution
Recover the values behind the decision, organize them around consequences, and declare only the measurement and trade-off structure that the receiving comparison can support. Keep unresolved preferences and protected conditions visible rather than completing a score by assumption.
PSD.9:4.1 - Recover whose concern changes the comparison
Name the subject, affected people or Systems, configuration, horizon, and receiving question. Use PSD.2’s participation and concern account where it supplies relevant attributed concerns, duties, interests, missing voices, or representation limits. That input is not already a value model or a mandate to aggregate preferences.
For each material concern, ask who expresses or bears it, what consequence matters, and under what conditions. Recover an actual assignment, local system-role classification, or authority relation only where the concern’s meaning or governing force depends on it. A title such as resident, manager, or expert does not establish representation or decision rights.
If a needed concern or binding condition is unavailable, use a qualified direct source or return the exact gap. Do not treat non-response as indifference. Distinguish participants’ current statements from the analyst’s proposed interpretation and from an established obligation.
PSD.9:4.2 - Distinguish ends, means, and repeated consequences
Ask “Why does this matter here?” to identify the consequence sought. Ask “How might it be achieved?” to expose possible means. “Provide training” may be one means; reliable performance in representative later Work may be the relevant end. The distinction is local to the question: a process experience can itself be valued when participants actually care about it.
Organize objectives only as far as the structure helps. For a small decision, a few attributed statements may be enough. A hierarchy or means–ends map is useful when several levels or overlaps would otherwise be lost.
Test apparent duplicates through their meaning and consequence path. Avoid counting one consequence twice under different names. But statistical correlation alone is not duplication: service loss and distribution of that loss can remain different values even when their observed measures covary. Conversely, statistical independence does not prove that a preference model may add the values.
Retain an objective only if it represents a material value, protected condition, or decision-changing distinction. When simplifying, state the lost distinction and check that it cannot reverse the intended comparison. Do not delete a concern merely because it is difficult to measure.
PSD.9:4.3 - Give each measure a usable meaning
For every consequential measure, state the characteristic, subject or participant tuple, scale and unit where applicable, direction of preference, horizon, source, and missingness rule. Distinguish a direct measure from a proxy and say what the proxy cannot establish.
Use C.16 for measurement and A.19 when a declared multi-characteristic space or reusable predicate is needed. A.19 supplies coordinate and scale meanings; it does not perform scoring, aggregation, comparison, or selection. A number missing its subject or scope is not repaired by placing it in a common column.
Keep raw consequence descriptions alongside any value transformation that the comparison uses. A performance scale and a value scale answer different questions. If an ordinal judgement is used, preserve its ordering without assuming equal intervals or averaging categories. If a numerical value function is used, state the consequence range, anchors, interpolation or shape, and the elicitation basis that makes the transformation meaningful.
PSD.9:4.4 - Separate conditions from compensable objectives
Identify which conditions are binding, which are aspirations, and which are uncertain claims requiring a competent result. Record the source and use of each condition. A participant’s request for a minimum service level is a value claim; a separately established legal or safety requirement has its own governing basis.
Do not compensate for a failed protected condition by adding benefits elsewhere. If its meaning, applicability, or authority is disputed, retain that dispute and ask for the exact interpretation rather than choosing a convenient threshold. A comparison may proceed on an explicitly narrower slice while the whole-decision conclusion remains blocked.
When the live question is whether the requirement itself should be retained or changed, use C.11.DUA §4.3 with the competent domain contribution. Identify the protected person or System and interest, unwanted outcome, governed quantity or activity, conditions and horizon. Distinguish background, attributable increment and total exposure where they affect the judgement. Examine the causal and measurement basis, uncertainty, threshold or precision choice, marginal protection, full burden and displaced protective work. Compare retention, tightening, revision, replacement or removal only where they are meaningful alternatives. A safety label does not supply that basis, and expense alone does not defeat a protective requirement.
Return the supported requirement recommendation and the reason or limit the recipient needs, together with its present force, amendment authority and feasible time window. The appraisal can finish even when amendment is unavailable; the currently binding condition still constrains action. State a resulting impasse when no acceptable alternative or timely amendment is feasible. A later correction does not restore an already lost opportunity. Use this return only for the disputed requirement; an adequate ordinary value account needs no new appraisal.
Some thresholds are preference choices rather than prohibitions: an aspiration level, budget preference, or tolerated inconvenience. Say which they are and whose judgement they express. A threshold crossing is not automatically a decision or permission to act.
PSD.9:4.5 - Elicit trade-offs over consequences, not criterion labels
Before assigning weights, ask which concrete consequence profiles the value holder prefers and why. For an additive value model, a weight concerns the value of an improvement over a stated consequence range, not the abstract importance of the criterion’s name. Changing that range can require elicitation again.
Test whether a proposed compensatory model fits the expressed preferences. If one consequence’s value depends on another, retain that interaction or use a suitable model. If a participant refuses the trade-off, do not encode refusal as an extreme but negotiable weight unless that faithfully represents the judgement.
Several forms can be useful: qualitative preference statements, a priority order, threshold rules, an additive or non-additive value model, or an outranking relation that can preserve incomparability. Choose the least burdensome form that preserves the decision-changing distinction. The domain Method supplies its elicitation and validity conditions; naming MCDA does not satisfy them.
Keep each materially different value account attributable. A common account requires an explicit and legitimately governed way to combine or reconcile the judgements. Voting, averaging, or a sponsor’s preference is not a default aggregation rule. Where several preference models remain compatible with the expressed judgements, retain that family rather than fitting one arbitrary point estimate.
PSD.9:4.6 - Return the account and its exact incompleteness
Return the attributed concerns and objectives; consequence meanings and measures; protected conditions and their sources; admitted trade-offs or preference relations; material interactions and dissent; unsupported transformations; and what would change the account. When a requirement’s merits were in question, include the bounded appraisal return and the limit imposed by its current force from §4.4.
PSD.11 may use it only for the named comparison. The account can support a partial order or leave a comparison unresolved. Missing preference information is not automatically missing empirical evidence: a further experiment may estimate consequences without deciding how they should be valued.
Recognition needs only a material ambiguity, duplication, or unexplained trade-off. Consequential reliance additionally needs qualified measurements, faithful elicitation, a justified aggregation Method when used, direct authority for binding conditions, and the applicable domain assurance. A readable value table satisfies none of those stronger claims by itself.
PSD.9:5 - Archetypal Grounding
PSD.9:5.1 - Two meanings of flood service
In the illustrative flood-pump engagement, a residents’ association emphasizes property protection, while a separately heard group of mobility-constrained residents emphasizes reachable assistance. The board is the later choice owner, not an assumed representative of every value judgement.
The analyst replaces a generic “service quality” score with this account:
| Concern | Consequence representation | Trade-off or qualification boundary |
|---|---|---|
| Reduce property loss. | A qualified loss estimate for the affected properties and flood conditions. | The estimate is not evidence of reachable assistance; its valuation and uncertainty remain explicit. |
| Keep assistance reachable. | Whether the defined assistance service can reach the named population under the relevant access conditions. | The expressed concern is retained. Any binding access or safety condition needs its direct competent basis; it is not inferred from participation. |
| Maintain pumping service. | Hours of unavailability for the specified pumping service over the season. | This operational measure does not cover all property or human consequences. |
| Limit resource use. | Resources required by each whole arrangement, including continuing obligations and transition. | A cost preference does not permit violation of a separately established protected condition. |
The analyst removes a second “reliability benefit” entry that merely repeats the same pumping-service hours. Reachable assistance stays separate even if failures often occur in the same storms. That is not duplicate value.
If the board adopts a trade-off between operating-service hours and budget units for a narrow analytical slice, the account names that value judgement, range, and limit. It does not present the slice as the residents’ common value function. If the association and the other group reject a common trade-off, the return carries separate accounts and a stated disagreement; another hydraulic simulation cannot resolve that disagreement.
PSD.9:5.2 - Development directions do not share a universal improvement score
For the ninety-day service-organization case, a qualified strategy result gives reliability priority over throughput for the current horizon. That premise helps frame the comparison but does not supply numerical weights or a causal effect estimate.
| Proposed holder-specific input | What the value account may use | What it must not infer |
|---|---|---|
| Human capability result for representative later Work. | The supported performance distinction and the person’s relevant protected conditions. | Course attendance, assessment performance, retention, and transfer are not one interchangeable development value. |
| Organization result for positions, interfaces, and continuing service. | Contribution and service consequences for the named arrangement. | A local team’s gain is not automatically a gain for the organization or another team. |
| AI/model evaluation for a named version and environment. | The qualified performance, resource, oversight, and failure distinctions. | A benchmark percentage is not a person’s capability measure or the whole service’s reliability. |
The adviser keeps those premises in their own meanings. A common service-level comparison is possible only after qualified domain results connect each direction to that same service and horizon. Without that connection, “human 4, organization 4, AI 4” is not a meaningful equal score. The return requests the missing consequence relation rather than normalizing the three numbers.
PSD.9:5.3 - Cheap non-use
Two qualified replacement parts have the same relevant consequences except for a directly comparable resource cost, and the authorized recipient’s cost preference is already explicit. Reuse that account. An objectives hierarchy and a fresh weighting workshop would add no value distinction.
PSD.9:5.4 - Retain a protective restriction or revise a redundant control
These constructed variants concern a service team’s proposed use of an external inference provider. In the first, a qualified configuration result shows that the proposed route exposes identifiable confidential incident records to provider staff who have no part in serving those clients. An available internal route meets the current service need within its support budget. The restriction prevents that disclosure; relaxing it for the faster external route would expose those clients without a corresponding needed service gain. The value account therefore supports retaining the restriction and excludes this external route for the current use. It does not infer that all provider configurations are unsuitable.
In the second variant, the configuration and access protection remain adequate. The disputed rule additionally requires three hours of manual transcription of an access log. Assume the competent review has established that the retained, inspectable electronic log covers the same events and that transcription adds no omitted event or distinct check. The same three hours would otherwise test a newly exposed, unreviewed access path to the same protected records. On these facts, retaining the extra transcription displaces more protective work without an identified protective gain. Recommend revising that requirement to use the qualified electronic record while keeping the actual access controls. If a missing event or an independent check is found, that premise changes the recommendation.
The rule owner cannot amend the transcription requirement before this decision. The recommendation is still complete, but it is not an exemption: present options must satisfy the rule or remain deferred. The lost testing opportunity remains a consequence of the present constraint. The contrasted results follow from the stipulated contribution and burden, not from the words security, digital or redundant.
PSD.9:6 - Bias-Annotation
Scope: value representation for one bounded comparison. Lenses: Onto/Epist separates concern, measure, preference, and obligation; Prag preserves decision relevance; Gov exposes representation and authority; Did makes trade-offs concrete.
Template bias imports irrelevant criteria. Proxy bias rewards what is easy to count. Splitting one objective into many criteria can change its apparent importance. Sponsor averaging can conceal who bears a loss. Counter these by returning to attributed consequences, inspecting overlaps, and retaining disagreement and missingness. Do not replace one template with a mandatory elaborate hierarchy.
PSD.9:7 - Conformance Checklist
- Values are attributed to the relevant subjects and receiving comparison, with representation limits intact.
- Objectives and possible means remain distinct at the grain that changes the decision.
- Repeated consequences are not counted twice; correlation alone does not justify deletion.
- Measures retain subject, scale, unit, horizon, evidence, proxy limits, and missingness.
- Binding conditions, aspirations, and unresolved authority questions are distinguished. A live merits question receives an appraisal of protective contribution and burden, with a supported recommendation and unchanged current force.
- Value transformations and weights have declared ranges and an elicitation basis.
- Interactions and refusals to compensate are preserved.
- Any collective aggregation has an explicit basis; incompatible accounts remain visible otherwise.
- The return states partiality, dissent, direct-source gaps, and exact reopen conditions.
- A value account is not a comparison result, authorization, or claim of effect.
PSD.9:8 - Common Anti-Patterns and How to Avoid Them
| Anti-pattern | Repair |
|---|---|
| “Everyone agrees safety is important, so give it twenty percent.” | Recover the actual condition, its source, and whether compensation is permitted. |
| “Equal weights are neutral.” | State the consequence ranges and inspect how criterion splitting changes the result. |
| “These two measures correlate, so one is redundant.” | Examine whether they represent the same valued consequence. |
| “Normalize everything to zero–one.” | Establish value meaning and admissible operations before any transformation. |
| “The workshop mean is the public preference.” | Preserve attribution and require an explicit aggregation basis. |
| “Collect more data to resolve the value dispute.” | Identify whether the missing input is evidence, preference, representation, or authority. |
PSD.9:9 - Consequences
The comparison becomes open about what it values and what it cannot exchange. Simplifying the account can reduce burden without losing material distinctions. Some decisions remain partially ordered or disputed; that is a truthful result, although it may be less convenient than a single score.
PSD.9:10 - Rationale
Value representation makes consequences decision-relevant without confusing description with preference or preference with permission. Concrete trade-off questions expose assumptions hidden by criterion labels. Preserving multiple admissible accounts lets later comparison show where a conclusion is shared and where it depends on a disputed judgement.
PSD.9:11 - SoTA-Echoing
| Practice question | Best-known line | Serious alternative or default | Defect overcome and pattern mutation | Source roles and limits | Reopen condition |
|---|---|---|---|---|---|
| How can objectives be concise without omitting what matters? | Inspect means–ends structure, relevance, overlaps, and sensitivity to simplification. | Retain an exhaustive descriptive hierarchy, or delete criteria by correlation alone. | Adapt: :4.2–:4.3 keep a small consequence-led account and test any lost distinction. More analyst attention is accepted where it prevents double counting; small clear cases remain short. | Marttunen et al.’s 2019 objectives-hierarchy study supplies the comparative methods and retrospective environmental cases. It supports disciplined simplification, not one optimal hierarchy or a statistical license to discard values. | Reopen when a removed distinction can reverse the comparison or a lighter structure preserves the same concerns. |
| Must incomplete preferences become one weighted score? | Match the preference model to the available judgements and preserve a family of compatible models when necessary. | Fit a single additive model or average participants’ weights for convenience. | Adapt: :4.4–:4.6 retain protected conditions, explicit compensation assumptions, and distinct value accounts. The accepted trade-off is a possibly less decisive result for less invented precision. | Greco, Słowiński, and Wallenius’s 2025 MCDA review compares preference information, models, and recommendation forms, including robust ordinal regression. It is a best-known-line candidate for model–information fit, not evidence of a universally correct value system. | Reopen if new elicitation narrows the compatible models or a domain obligation changes admissible compensation. |
| Can common coordinates perform the value judgement? | Declare meanings and scales separately from preference, comparison, and selection. | Treat a dashboard or normalized vector as the decision model. | Adopt: :4.3 uses A.19 only for the declared space or predicate and leaves value elicitation here. The distinction adds little effort to an existing table and prevents a false consumer result. | Current A.19, C.16, and the direct comparison patterns supply the relevant typing and operation boundaries. They do not elicit the engagement’s values or authorize a trade-off. | Reopen when the scale, predicate, consequence range, or receiving use changes. |
PSD.9:12 - Relations
PSD.2may supply the participation and concern account that changes the value question. That contribution is not already a weight set or a collective mandate.PSD.11consumes the value account only for the named comparison. The account does not silently scalarize or authorize its result.C.16governs measurements;A.19supplies a declared characteristic space or predicate when needed. Scoring, aggregation, comparison, and selection remain separate direct operations.- Direct ethics, law, safety, governance, finance, and holder practices supply the particular conditions and claims they own.
A.15.9helps obtain a missing qualified contribution without transferring that authority. - If a required value or source premise is absent, stale, or incompatible, use a qualified direct result or return its exact gap. A completed model, candidate list, or workshop does not fill it by adjacency.
PSD.9:End