Search words, quoted phrases, and exact IDs across the current corpus.
By default, all meaningful words must match the same source passage, in its text or titles. Matching ignores letter case. Ordinary word queries skip common English function words such as the, and and or; quotes keep a phrase, and uppercase operators control matching.
| Example | What it does |
|---|---|
controlled variation | Requires both meaningful words; their order may differ. |
"controlled variation" | Requires adjacent words in that order. |
SYSE.24:4 | Prioritizes the exact named section. Pattern IDs also work. |
engineering OR management | Matches either alternative. Write OR and AND in uppercase. |
engineering AND (research OR management) | Requires engineering together with either grouped alternative. |
engineering -management | Excludes passages that match management. |
title:"controlled variation"body:"controlled variation" | Restricts the phrase to section/publication titles, or to source text. A field prefix applies to the following term or phrase. |
"controlled variation"~1 | Allows one intervening word in the phrase. |
"controlled vari"* | Requires adjacent words, with the last word as a prefix. |
engineering^2 OR management | Gives engineering matches more ranking weight. |
The Publication, Suite and Type filters narrow the same query. Results are source passages, not generated answers. Search does not translate, expand synonyms or automatically correct spelling. For a task expressed in another language, try English terms and read the context. Press / to focus the search field.
PSDA.3 - Construct Complementary Situation and Option Models Type: Method pattern body Status: Stable Primary working result: a multi-model decision account: the smallest useful set of situation and option models, the questions each answers, their…
In PSDA.3 - Construct Complementary Situation and Option Models
In this illustrative continuation of the flood-pump inquiry, the board needs a pre-season decision-support return about permanent pumps, mobile capacity, maintenance, staffing, and access. The current formulations distinguish capacity shortage, deployment reliability, unequal…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:10 - Rationale Complementarity is a relation between useful contributions to a question, not a model count. Purpose-led selection and explicit loss preserve different interpretations while making technical claims inspectable. Separate assurance keeps a…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:4 - Solution Build a question-led set of complementary models. For each, state its subject, intended use, assumptions, evidence, and what it omits. Compare only the overlapping claims whose meanings can be aligned, retain material differences, and…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:9 - Consequences The recipient sees which model can answer which question and where the combined account stops. Contradictions can guide inquiry instead of being hidden by one score. The cost is explicit assumptions and correspondence work; limit that…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:3 - Forces Force Tension Discrimination Each model should change a claim, alternative, or inquiry priority, while exploratory models may first reveal what question matters. Plurality Material perspectives deserve distinct expression, while collecting…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:2 - Problem A capacity calculation cannot show whose service standard should govern. A rich picture can reveal attributed concerns without estimating a failure probability. A scenario can expose a vulnerable condition without predicting how often it…
In PSDA.3 - Construct Complementary Situation and Option Models
… losses separately from confidence in the model or its producer. Technical sophistication, modeler reputation, or participant confidence is treated as sufficient credibility. Adapt: PSDA.3:4.3–4.6 and the flood-pump case retain applicability, evidence…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:5.3 - Cheap non-use A technician needs one conversion under an already-qualified formula, with agreed units and no material uncertainty about applicability. Use that calculation directly. A rich picture, scenario set, and second model would add no…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:6 - Bias-Annotation Scope: models supporting bounded problem-structuring and decision-support questions. Lenses: Onto/Epist separates subject, model, expression, and evidence; Prag selects useful discrimination; Arch exposes model connections; Gov…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:7 - Conformance Checklist The account serves a named subject, question, receiving use, configuration, and horizon. Needed formulation and scope inputs are current and compatible, or their exact gaps are returned. Each model supplies a distinct useful…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:4.7 - What changes in practice Instead of asking which model is “the right one”, the practitioner asks which claims need a model, what each selected model contributes, and which difference would change the next move. Models can remain usefully plural…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:12 - Relations PSDA.1 supplies formulations only where their differences guide model discrimination. PSDA.2 supplies the scope and reopen basis for the same subject and decision. Missing needed values require qualified direct sources or an exact gap.…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:1 - Problem frame Use this when one diagram, spreadsheet, simulation, or agreed story is being asked to explain a contested situation, represent everyone’s concerns, predict consequences, and identify the best intervention. Also use it when several…
In PSDA.3 - Construct Complementary Situation and Option Models
PSDA.3:5.2 - Development advice across two holders An adviser compares a training direction for two service teams. A skills map suggests similar learning needs, but each team’s queue model uses its own demand and staffing evidence. The combined account keeps…