Multi-criteria treatment choice
Options for treating a risk are scored against objectives such as safety, cost, service continuity and equity, with weights elicited from decision makers and the sensitivity of the ranking to those weights reported.
GCRI · مدیریت ریسک سامانهای
Decision analysis structures choices under uncertainty: it makes the options, objectives, uncertainties and trade-offs explicit so that a decision can be examined and defended. In ریسک سامانهای management it supports appetite setting, the choice of treatments and the selection of investments in resilience where consequences are uncertain and values conflict.
Decision analysis under uncertainty provides structured methods for choosing among options when outcomes are uncertain and objectives conflict. It makes trade-offs and value judgements explicit. In risk management and ریسک سامانهای and methods and modelling, decision analysis helps choose actions that perform acceptably across interconnected risks and uncertain futures. It clarifies when to act now and when to keep options open. The canonical description is on STEM Commons.
Options for treating a risk are scored against objectives such as safety, cost, service continuity and equity, with weights elicited from decision makers and the sensitivity of the ranking to those weights reported.
Sequential choices, such as whether to invest now or wait for information, are laid out with their probabilities and consequences, and the value of further information is estimated before commissioning it.
Strategies are tested across many plausible futures to find those that perform acceptably in most of them, and the conditions under which each strategy fails are identified.
The screen a team would use to follow this method: its measures, states and decisions. Names are examples and values are illustrative.
Systemic risk · Decision analysis for risk · Run R-0911
| Risks above appetite | عادی | risks, stated | استنباط کارشناسی |
| Key risk indicators in breach | عادی | KRIs, stated | استنباط کارشناسی |
| Controls tested effective | Lognormal | of controls, stated | استنباط کارشناسی |
| Interdependency links mapped | عادی | links, stated | استنباط کارشناسی |
Datasets and records used by decision analysis under uncertainty on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.
| داده | نقش | برچسب |
|---|---|---|
| Elicited objectives and weights from decision makers | Value model inputs | DECLARED |
| فهرست ریسک assessments | Likelihood and consequence inputs | برآوردشده |
| Scenario libraries | Futures for robustness testing | مدلسازیشده |
| Cost and performance records of past treatments | Option evaluation | مشاهدهشده |
مدل، مفروضات، دادهها و عدم قطعیت آن، به شکلی که دانشمند یا مهندس بررسی میکند. ساختارها از روشهای منتشرشده پیروی میکنند. مقادیر ترسیمشده تبیینیاند، نه یافته.
The model structure used for decision analysis for risk management, the assumptions it makes and how each is tested.
Ri = f(Hi, Ei, Vi, Ci)مخاطره، مواجهه، آسیبپذیری و ظرفیت مقابلهEAL = ∑k pk · Lkبر رویدادهای k با احتمال سالانهٔ pkxt+1 = A xt + B ut + εtA carries the couplings, u the shock, ε the error| فرض | چرا ساخته میشود | چگونه آزموده میشود |
|---|---|---|
| مخاطره و مواجهه در یک رویداد مستقلاند | انتگرال زیان را تحتکنترل نگه میدارد | مقایسه با برازش مفصل بر سوابق مشترک |
| جفتشدگیها نزدیک نقطهٔ کار خطیاند | اجازه میدهد شوکها از طریق A منتشر شوند | فراتر از دامنهٔ خطی آشفته کنید و مقایسه کنید |
| منحنیهای آسیبپذیری میان مکانها منتقل میشوند | منحنیهای محلی بهندرت در دسترساند | اعتبارسنجی در برابر زیانهای مشاهدهشده در جاهایی که وجود دارند |
Analyses are checked through sensitivity analysis, peer review and stakeholder scrutiny. Retrospective review compares decisions with outcomes.
| بررسی | How it is done |
|---|---|
| Sensitivity to weights | Rankings are recomputed across plausible weight ranges and changes in the preferred option are reported |
| Value of information | The expected value of reducing an uncertainty is estimated before commissioning further study |
| Requisite model review | Decision makers confirm that the model captures the objectives and options they consider relevant |
Results depend on elicited probabilities and preferences that may be biased. Deep uncertainty can make expected value comparisons misleading.
Process explorer · Process
10 steps·4 مرحله
فرایند
In IPCC AR6 Working Group II, climate risk results from interactions between hazards and a system’s exposure and vulnerability, and responses can add risk.
Outline of an external standard or method, from its public sources. It describes what the framework says, not a record of any run. It does not show that Nexus or any partner performs, certifies or approves a step. A gate is a step of the method, never a Nexus approval.
ریسک سامانهای Management stewards decision analysis under uncertainty for the Consortium and reviews how it is applied across platforms.
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