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单词 skill score
释义
skill score

Statistics
  • A measurement of the skill of a forecast. The Priestley skill score, P, applies to value forecasts (such as forecasts of temperature). Let fi denote a forecast, and let oi denote the subsequent observed value, with denoting the mean of a set of n observed values. Then P is given byskill scoreThe Brier score was introduced in 1950 to assess the accuracy of probabilistic weather forecasts (e.g. ‘There is a probability pi of rain tomorrow’). Denoting the actual weather outcome by oi (equals 1 if the event occurs, and 0 if it does not) the Brier score, B, is given (for n forecasts) byskill scoreThe smaller the value of B, the more skilful the forecasting procedure. If Bs denotes the Brier score for a standard forecasting system, then S, given byskill scoreis called the Brier skill score.


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