Generalised linear models in pricing
Claim frequency and severity are related to risk factors with exposure offsets, so each factor’s effect and uncertainty can be reviewed.
GRA · アクチュアリーと定量的リスク
空間金融資本がハザード、エクスポージャー、移行と出会う場所
Probability and statistics provide the language of quantitative risk: distributions, estimation, dependence, testing and uncertainty. On this platform they underpin loss modelling, credibility, mortality and validation, and show how much confidence each estimate deserves.
Probability and statistics provide the mathematical framework for describing uncertainty and learning from data. They underpin estimation, testing and prediction in every risk discipline. In insurance and catastrophe, methods and modelling and capital markets and investment, statistical methods quantify the likelihood and uncertainty of losses across interconnected システム. They make the evidence behind risk decisions explicit and reproducible. The canonical description is on STEM コモンズ.
Claim frequency and severity are related to risk factors with exposure offsets, so each factor’s effect and uncertainty can be reviewed.
Prior assumptions from industry data are updated with own experience, giving posterior estimates that show how far the data moved the prior.
Fitted distributions are tested with formal statistics and quantile plots, with attention to fit in the tail where it matters most.
この手法を追跡するためにチームが使う画面:その指標、状態、決定。名前は例であり、値はイメージです。
Actuarial and quantitative risk · Probability and statistics · Run R-1415
generalised Pareto fit
| Shape ξ | 0.10 | 0.01 | 0.43 | heavy tail if above zero |
| Scale σ | 1.6 | 0.9 | 7.1 | units of the variable |
| Exceedances | 132 | declustered |
Datasets and records used by probability and statistics on this platform, with the role each plays and the label its values carry. Sources are listed in 出典の登録簿.
| データ | 役割 | ラベル |
|---|---|---|
| Claims and exposure records | Model fitting | 報告値 |
| Industry benchmarks | Priors | 推定 |
| Mortality data | Life models | 公表統計 |
フットプリント内のポートフォリオが、年間で、また保険会社や貸し手が価格付けに用いる 100 年に 1 度と 250 年に 1 度の水準で、どれだけの損失を見込むかを示します。あらゆる カタストロフィ・モデル が使う同じ三つの構成要素に基づきます。教育用モデルであり、例示的な値を明記しています。予測ではありません。
管理策
読み取り値
| 再現期間(年) | 強度(強度指数) | 損失(価値に対する %) |
|---|---|---|
| 1 | 0.09 | 0.00 |
| 2 | 1.27 | 0.00 |
| 4 | 1.91 | 0.00 |
| 7 | 2.47 | 0.00 |
| 13 | 3.00 | 0.00 |
| 24 | 3.51 | 0.00 |
| 44 | 4.02 | 0.00 |
| 82 | 4.53 | 23.55 |
| 154 | 5.03 | 26.44 |
| 287 | 5.53 | 28.87 |
| 536 | 6.03 | 30.88 |
| 1,000 | 6.53 | 32.53 |
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:
6 本の柱を通じて、Nexus Consortium が主導
Results are checked through diagnostics, cross-validation and sensitivity to assumptions. Independent replication confirms findings.
| 確認 | 実施方法 |
|---|---|
| Out-of-sample validation | Models are tested on data not used for fitting |
| Residual diagnostics | Residuals are inspected for structure |
| Assumption sensitivity | Distributional assumptions are varied and effects reported |
Inference depends on assumptions about independence, distribution and sampling that may not hold. Small or biased samples limit reliability.
リスク責任者、監督当局、財務省が求めるエクスポージャー、損失、シナリオ、資本のビューと、それらが報告の根拠とする枠組み。構造は監督実務とアクチュアリー実務に従います。値は例示であり、価格、格付け、助言では決してありません。
How losses from probability and statistics for actuarial and quantitative risk grow with severity, gross and net of reinsurance, against capital.
| 再現期間 | 年間確率 | 総損失 | 純損失 | 純額、資本 = 100 |
|---|---|---|---|---|
| 10 年に 1 度 | 0.10 | 14 | 10 | 10 |
| 50 年に 1 度 | 0.02 | 33 | 21 | 21 |
| 100 年に 1 度 | 0.01 | 46 | 27 | 27 |
| 250 年に 1 度 | 0.004 | 68 | 39 | 39 |
| 年間平均損失 | 3.1 | 2.2 | 2.2 |
システム科学とモデリング stewards probability and statistics for the Consortium and reviews how it is applied across platforms.
報告書 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.
個人データ、重要インフラの機微な詳細、共有する権利のないものは決して送らないでください。寄稿は利用前にレビューされます。送付によって著作者としての権利や編集上の権利が生じることはなく、スポンサーシップで調査結果を買うことは決してできません。
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