Warning thresholds and false alarms
Decision trees compare the cost of acting on a warning that proves false with the cost of failing to act, making the threshold choice explicit for the authority that sets it.
GRF · 灾害与危机治理
Decision analysis structures choices made under uncertainty and time pressure: options, consequences, probabilities and values. In crisis governance it frames warning thresholds, evacuation orders, resource allocation and the trade-offs that leaders face before the facts are clear.
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 disaster and crisis and 关键基础设施, 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.
Decision trees compare the cost of acting on a warning that proves false with the cost of failing to act, making the threshold choice explicit for the authority that sets it.
Forecast thresholds are linked to actions and responsibilities in advance, so that decisions in an event follow a protocol rather than improvisation.
Exercise scenarios record which decisions leaders took, on what information and when, so after-action reviews can examine reasoning as well as outcomes.
团队遵循该方法时会使用的界面:其指标、状态与决策。名称为示例,数值仅作示意。
Crisis governance · Decision analysis · Run R-0034
| Agencies with clear mandates | Beta | of agencies, stated | 专家判断征询 |
| Warnings issued on time | 对数正态 | of warnings, stated | 专家判断征询 |
| Exercises held | 对数正态 | exercises, stated | 专家判断征询 |
| After-action items closed | Beta | of items, stated | 专家判断征询 |
| 数据 | 角色 | 标签 |
|---|---|---|
| Warning logs and event records | Verification of past decisions | 观测 |
| Hazard forecasts and probabilities | Inputs to thresholds | 预测 |
| Cost and impact estimates | Consequences of options | 估算 |
| Exercise decision logs | Decision process evidence | 已报告 |
三类工具在你设定的覆盖率和遵从率下与基线并列比较,每类都有自己的滞后和采用速度;效应大小是教学用数值,应以证据替换。情景:关于未来的具名假设,不是预测。
控制措施
读数
| 年份 | 基线 | 监管 | 经济激励 | 信息与能力 |
|---|---|---|---|---|
| 0 | 100.0 | 99.5 | 98.8 | 99.1 |
| 1 | 102.0 | 101.2 | 100.1 | 99.8 |
| 2 | 104.0 | 102.5 | 101.1 | 99.9 |
| 3 | 106.1 | 103.5 | 101.6 | 100.0 |
| 4 | 108.2 | 103.7 | 101.8 | 100.7 |
| 5 | 110.4 | 103.2 | 101.7 | 102.1 |
| 6 | 112.6 | 102.0 | 101.6 | 103.9 |
| 7 | 114.9 | 100.4 | 101.6 | 105.9 |
| 8 | 117.2 | 99.2 | 102.1 | 108.0 |
| 9 | 119.5 | 98.6 | 102.9 | 110.1 |
| 10 | 121.9 | 98.9 | 104.2 | 112.3 |
| 11 | 124.3 | 99.7 | 105.7 | 114.5 |
| 12 | 126.8 | 101.1 | 107.4 | 116.8 |
| 13 | 129.4 | 102.7 | 109.4 | 119.2 |
| 14 | 131.9 | 104.5 | 111.4 | 121.6 |
| 15 | 134.6 | 106.5 | 113.5 | 124.0 |
| 16 | 137.3 | 108.5 | 115.7 | 126.5 |
| 17 | 140.0 | 110.7 | 118.0 | 129.0 |
| 18 | 142.8 | 112.9 | 120.4 | 131.6 |
| 19 | 145.7 | 115.1 | 122.8 | 134.2 |
| 20 | 148.6 | 117.4 | 125.2 | 136.9 |
The model runs on the teaching values set by the controls. To calibrate it for a place, read it against these admitted layers and series, which this page’s map can draw:
贯穿六大支柱,由 Nexus Consortium 牵头
| 核查 | 如何开展 |
|---|---|
| Options stated | Each analysis lists the options considered, including doing nothing |
| Values explicit | Trade-offs between lives, cost and disruption are stated, not hidden in weights |
| Hindsight separated | Reviews judge decisions on the information available at the time |
结果取决于征询得到的概率与偏好,而这些可能存在偏倚。深度不确定性可能使期望值比较产生误导。
一项文书从授权到评估所经历的步骤,每一步都标明负责运行的支柱,以及仍由当局作出的决定。这是带有明示说明性数值的教学模型,不是预测。
贯穿六大支柱,由 Nexus Consortium 牵头
政策制定者、外交官或发展机构所使用的文书、授权、行为方和问责安排,并注明设定它们的协定。结构遵循所列框架。所绘制的任何状态或进展均为说明性,并非记录。
The agreements that set mandates and commitments on decision analysis under uncertainty for disaster and crisis governance, from adoption to their current horizon.
报告 is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.
切勿发送个人数据、敏感基础设施细节或您无权分享的任何内容。贡献在使用前会经过审查;发送贡献不赋予署名权或编辑权,赞助也绝不能换取研究结论。
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