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Politics : Stockman Scott's Political Debate Porch -- Ignore unavailable to you. Want to Upgrade?


To: lurqer who wrote (28060)9/18/2003 2:31:04 PM
From: Jim Willie CB  Read Replies (1) | Respond to of 89467
 
who knows on SIGMAs ?
just for added info, my doctoral probability & statistics thesis was on multi-dimensional extreme value theory
extended a Russian's work, some guy named Gnedenko

in one dimension, extreme value statistics are the MINIMUM and the MAXIMUM
e.g. take a sample at a downtown office pavillion of men's heights
the tallest person's height and the shortest person's height are the MIN and MAX
these are extremes

e.g. take husband and wife heights
now you are on different ground since more than one reading
you can talk about the MIN and MAX of husbands
and the MIN and MAX of wives
but also the tallest combined height, and shortest combined height
husband height might be on the X-axis
wife height on the Y-axis
combined height is represented by projections onto the 45-degree angle direction

my work extended this whole scheme into multiple dimensions

it might sound abstruce and arcane, but it turned out to open up a new body of probability theory
3-4 other guys marched thru the path I laid out, and extended the work into nifty directions
all at Carnegie Mellon Univ
(where the homosexual meet the asexual -- I was a rare hetero)

"The Asymptotic Distribution of the Convex Hull from a Spherically Symmetric Random Sample"
CMU, 1980

so extreme value theory piques my interest always
I believe we have seen 15 extreme events since 1980
the common denominator is "post 1971" when Nixon defaulted on the gold-backed dollar

more extreme events coming each and every year
Fanny Mae implosion is tops on my eventual list
/ jinm