I had my "aha moment" here when you multiplied the grad by the delta to calculate the directional derivative and then the resulting term resembled the second term of the multi-variate Taylor series. Thank you very much.
@123XTSK
Жыл бұрын
Well visualized coherent presentation of a seemingly easy but really difficult topic for intuitive comprehension.
@Falconoo7383
3 жыл бұрын
great work...
@matthewjames7513
2 жыл бұрын
Thanks for the video! You mention around 5:27 that: 'our hessian will be positive definite whenever our problem is convex'. Why is this the case?
@csikjarudi
Жыл бұрын
Convex problem means it can be approximated locally by a convex quadratic function. The quadratic function being convex is equivalent to the hessian being positive definite.
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