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Oct 12 at 11:17 comment added Antonios Sarikas @Antimony Can you explain why the 2nd and 3rd Figures are saddle points? They seem like maxima and minima, respectively.
S Feb 1, 2018 at 21:31 history suggested Andrea Bergonzo CC BY-SA 3.0
left and right imahes swapped
Feb 1, 2018 at 21:13 review Suggested edits
S Feb 1, 2018 at 21:31
Oct 20, 2017 at 0:28 comment added Kazuya Tomita @AliAbbasinasab I think Antimony explains well. Of course, getting stuck in a ordinary saddle point is hardly as you mention in your answer, but he just showed the possibility that the SGD might be caught. And to me, he just showed some unusual saddle points that SGD can't escape.
Jun 9, 2017 at 1:53 comment added Ali Abbasinasab Well, not exactly! For an answer in practice see: stats.stackexchange.com/a/284399/117305
May 15, 2017 at 16:15 history bounty ended Sorrow
May 12, 2017 at 1:12 history edited Antimony CC BY-SA 3.0
Added complex saddle regions
May 12, 2017 at 1:05 history answered Antimony CC BY-SA 3.0