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Calculus
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Partial derivatives
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358.
Hessian Matrix Definition
medium
The Hessian matrix of a scalar function f is defined as what?
A
The matrix whose diagonal contains squared partial derivatives and off-diagonal contains cross-correlations
B
The matrix of second-order partial derivatives: Hᵢⱼ = ∂²f/∂xᵢ∂xⱼ
C
The matrix whose columns are the gradient vectors computed at multiple training points
D
The matrix of first-order partial derivatives stacked as row vectors for each variable
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