[Shake-dev] Updated Release 3.5

[Jack Boatwright]

Bruce,

You say "When computing bias in grind, if the bias hits 
bias_(max|min)_bias, the bias is now set to zero, rather than the 
min/max. This is safer."

What do you mean by "safer?"  By setting the bias to zero, it appears 
that you are increasing the disagreement between the average GM data 
and the bias-adjusted GMPE.  Is it safer because you suspect there is 
a glitch in the data that ShakeMap missed?  I would argue that the 
present data stream (at least in northern California) is actually 
very glitch-free, and that you are exhibiting excessive GM data 
mistrust.

In addition, the PGV and PGA biases are strongly correlated, so that 
often a limited bias in one will be accompanied by a near-limit bias 
in the other, and your "safer" solution will more strongly split the 
biases for the two parameters.

		take care,          Jack

At 5:12 PM -0700 8/10/10, Bruce Worden wrote:
>Hi Folks,
>
>I've updated the release code with a number of bug fixes and enhancements.
>
>o iiscale, which was the subject of a previous update, now prints 
>the name of the operative GMICE with the scale; also, the Wald99 
>relation used a hard-wired set of PGM values that were not entirely 
>correct--the new version gives somewhat different PGM ranges for 
>each intensity value, and they are now consistent with the way 
>Wald99 works. I've also improved the documentation for iiscale in 
>the Software Guide.
>
>o Gabe Plank at UNR has found that "gm" from GraphicsMagick makes 
>better-looking text on Linux systems than does "convert" from 
>ImageMagick. I've updated genex and genex.conf to allow the use of 
>gm, and updated the Software Guide to reflect this option. Linux 
>users may wish to try this out.
>
>o When computing bias in grind, if the bias hits 
>bias_(max|min)_bias, the bias is now set to zero, rather than the 
>min/max. This is safer.
>
>o Fix timezone bug reported by Gabe Plank.
>
>o Removed -gsm as a default flag to mapping in shake.conf. GSM 
>folks, take notice.
>
>o Removed the various obsolete programs to retrieve CIIM data from 
>retrieve.conf. If you want to use CIIM data, add the correct program 
>"getdyfi" to retrieve.conf.
>
>o Other minor fixes and documentation updates.
>
>As always, please let me know if you run into any problems.
>
>Bruce
>
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