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Jul 21, 2018 at 10:00 vote accept Phil-ZXX
Jun 7, 2017 at 2:51 answer added Alex C timeline score: 3
Jun 7, 2017 at 1:30 comment added SRKX @AlexC again, please... Let's put this in an answer.
Jun 4, 2017 at 20:26 comment added Alex C A good paper for the Factor (or what you call PCA) approach is Journal of Financial Economics 62 (2001) 293–325, Extracting factors from heteroskedastic asset returns, by Christopher S. Jones
Jun 4, 2017 at 19:56 history asked Phil-ZXX CC BY-SA 3.0