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Mark L. Stone
  • Springfield, VA
  • United States
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  • Vincent Granville
 

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Latest Activity

Mark L. Stone replied to Vincent Granville's discussion Idea to track the Malaysia Airlines plane that disappeared
"Vincent, your proposal seems to be predicated on the assumption that all radar data is being shared 1) among governments, and perhaps 2) with the public.  Perhaps some government has radar data which it is not sharing for whatever reason, to…"
Mar 16, 2014
Mark L. Stone replied to Vincent Granville's discussion New Book: R for Business Analytics in the group New Books and Journals
""The author firmly believes Isaac Asimov was a better writer in spreading science than any textbook or journal author." Well, it's too bad then that Isaac Asimov didn't write the book."
Mar 7, 2014
Mark L. Stone commented on Vincent Granville's blog post The curse of big data
"Quite apart form whether variance or standard deviation is sensitive to outliers, there are very specific calculations which require it, and if they do, it should be calculated in a numerically stable manner. Whoever wrote that variance computation…"
Dec 21, 2013
Mark L. Stone commented on Vincent Granville's blog post The curse of big data
"Following up on Mirko's comment, has the numerically unstable computation of sample variance in Hadoop/Mahout by E(X)^2-E(X^2) been replaced by a numerically stable computation yet?  Numerically stable one-pass methods for computing the…"
Dec 21, 2013
Mark L. Stone replied to Vincent Granville's discussion Job interview question: what is wrong with this picture?
"I will just address this one statement "Saturn is about 1 billion miles away from Earth (at its closest), far bigger than Earth, and never visible with the naked eye" and not address its relation to the original question at hand (Saturn…"
Aug 4, 2013

Profile Information

My Website or LinkedIn Profile (URL):
http://marklstone.com
Field of Expertise:
Business Analytics, Predictive Modeling, Data Mining, Operations Research, Quant, Statistical Programming, Statistical Consulting
Years of Experience in Analytical Role:
30
Professional Status:
Consultant
Interests:
Finding a New Position, Networking, New Venture

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