<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["fr", "en"].<end_of_turn>
<start_of_turn>user
Définir ce que signifie « prédiction » au sens mathématique<end_of_turn>
<start_of_turn>model
In many situations, a set of inputs X (predictors) is readily available, but the output Y cannot be easily obtained. In this setting, since the error term averages to zero, we can predict Y using:
Y = f(X), where ˆf represents our estimate for f, and Yˆ represents the resulting prediction for Y. 
In this setting, ˆf is often treated as a black box, in the sense that one is not typically concerned with the exact form of ˆf, provided that it yields accurate predictions for Y.
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