Comments on: time series http://oklo.org/2007/05/01/time-series/ characterizing planetary systems Wed, 18 Apr 2012 18:53:22 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: greg http://oklo.org/2007/05/01/time-series/comment-page-1/#comment-2282 greg Wed, 02 May 2007 13:21:48 +0000 http://oklo.org/?p=200#comment-2282 fivemack, you got it! I wanted to pick (1) something totally unrelated to astronomy that (2) had weird structure in order to show that a multi-Keplerian model can fit just about anything. Don't put any money on that prediction. best, Greg fivemack,

you got it! I wanted to pick (1) something totally unrelated to astronomy that (2) had weird structure in order to show that a multi-Keplerian model can fit just about anything.

Don’t put any money on that prediction.

best,
Greg

]]> By: Eric F Diaz http://oklo.org/2007/05/01/time-series/comment-page-1/#comment-2280 Eric F Diaz Wed, 02 May 2007 11:35:15 +0000 http://oklo.org/?p=200#comment-2280 The data stream looks vaguely familiar, but I can't quite remember to which system it belongs. That is truly unbelievable how the "crazy" six-planet Keplerian system does a fine job of fitting the data. Maybe, I should try "crazy" more often in my fits. Just kidding. LOL The data stream looks vaguely familiar, but I can’t quite remember to which system it belongs. That is truly unbelievable how the “crazy” six-planet Keplerian system does a fine job of fitting the data. Maybe, I should try “crazy” more often in my fits. Just kidding. LOL

]]> By: fivemack http://oklo.org/2007/05/01/time-series/comment-page-1/#comment-2278 fivemack Wed, 02 May 2007 10:13:13 +0000 http://oklo.org/?p=200#comment-2278 From the range of values, that looks like the stock market VIX index, and indeed the charts seem to match. http://finance.yahoo.com/q/bc?s=%5EVIX&t=5y&l=on&z=m&q=l&c= I suppose that Keplerian models aren't very good at matching the secular exponential trend underlying value rather than derivative indices. Please don't go off and turn into a quantitive analyst; extrasolar planets are much more exciting. From the range of values, that looks like the stock market VIX index, and indeed the charts seem to match.

http://finance.yahoo.com/q/bc?s=%5EVIX&t=5y&l=on&z=m&q=l&c=

I suppose that Keplerian models aren’t very good at matching the secular exponential trend underlying value rather than derivative indices.

Please don’t go off and turn into a quantitive analyst; extrasolar planets are much more exciting.

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