Quali sono i presupposti adeguati della regressione logistica multinomiale? E quali sono i test migliori per soddisfare questi presupposti utilizzando SPSS 18?
Questa domanda fa seguito a stats.stackexchange.com/q/233658 Il modello di regressione logistica per le classi {0, 1} è P(y=1|x)=exp(wTx)1+exp(wTx)P(y=0|x)=11+exp(wTx)P(y=1|x)=exp(wTx)1+exp(wTx)P(y=0|x)=11+exp(wTx) \mathbb{P} (y = 1 \;|\; x) = \frac{\exp(w^T x)}{1 + \exp(w^T x)} \\ \mathbb{P} (y = 0 \;|\; x) = \frac{1}{1 + \exp(w^T x)} Chiaramente queste probabilità si sommano a 1. Impostando …
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