alleryStart learning →Logistic regression uses which hypothesis function?
Ah_θ(x) = θᵀx
Bh_θ(x) = 1 / (1 + exp(−θᵀx)) (the sigmoid)
Ch_θ(x) = max(0, θᵀx)
Dh_θ(x) = sign(θᵀx)
Answer & Solution
Correct answer: B. h_θ(x) = 1 / (1 + exp(−θᵀx)) (the sigmoid)
Logistic regression uses the sigmoid σ(z) = 1/(1+e^(-z)) to map θᵀx into (0,1), interpretable as P(y=1 | x).
ReLU and sign are not used for binary logistic regression.
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