gappy

1,795 reputation

827

bio	website	twitter.com/gappy3000
	location	New York, NY
	age
visits	member for	2 years, 10 months
	seen	Apr 30 at 11:37
stats	profile views	228

Interested primarily in econometric analysis of large data sets and in dimensionality reduction methods. Making a living with equity factor models and portfolio optimization. B.S./M.S. in Physics (University of Rome), M.S. Statistics, M.S./Ph.D. Management Science (Stanford).

	1,795 reputation	bio	website	twitter.com/gappy3000	visits	member for	2 years, 10 months
827 badges		location	New York, NY		seen	Apr 30 at 11:37

summary answers questions tags badges favorites bounties reputation activity

19 Answers

votes activity newest

48	The Two Cultures: statistics vs. machine learning?
45	Python as a statistics workbench
8	How does random forest generate the random forest
8	Clojure versus R: advantages and disadvantages for data analysis
8	Variable selection procedure for binary classification

1,795 Reputation

+80	The Two Cultures: statistics vs. machine learning?
-2	How does random forest generate the random forest
+10	James-Stein shrinkage 'in the wild'?
+5	Visualizing a million, PCA edition

19 Questions

votes activity newest

27	What are the breakthroughs in Statistics of the past 15 years?
16	Visualizing a million, PCA edition
13	What is the difference between PCA and asymptotic PCA?
12	Comparing the variance of paired observations
11	Essential papers on matrix decompositions

67 Tags

66 machine-learning × 5	8 algorithms
17 r × 6	8 random-forest
15 hypothesis-testing × 6	7 maximum-likelihood × 3
13 regression × 4	7 mathematical-statistics × 3
8 cart	7 multivariate-analysis × 2

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