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Lead time accuracy is evaluated using again the BIAS, MSE, MAE or BIASor MAE:
Lead time accuracy in bias (mean error) LEAD_BIAS
Lead time accuracy in Mean Square Error LEAD_MSE
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Lead time accuracy in Mean absolute error LEAD_MAE
Lead time accuracy in bias (mean error) LEAD_BIAS
where is the lead time accuracy at time , J is the number of forecasts considered, is the reference value at time and is the estimated value at time .
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