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Gradient Descent Can Take Exponential Time to Escape Saddle Points.
Simon S. Du
Chi Jin
Jason D. Lee
Michael I. Jordan
Barnabás Póczos
Aarti Singh
Published in:
CoRR (2017)
Keyphrases
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saddle points
scale space
critical points
saddle point
objective function
multiscale
image processing
feature space
edge detection