hard20 pts · first answer countsmodel-evaluationregression-metricsforecasting
Quantile loss of one forecast
A P90 (quantile 0.9) forecast is 80 units and the actual demand is 100. With pinball loss L = q × (y − ŷ) when y > ŷ, else (1 − q) × (ŷ − y), what is the loss?
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