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This is a more general statiscal question, not specific to R: As I move through my masters curriculum in statistics, I am becoming more and more attuned to issues of model fit and diagnostics (graphical methods, AIC, BIC, deviance, etc.) As my regression professor always likes to say, only draw substantive conclusions from valid models. Yet in published articles in my field (medicine), I rarely see any explicit description of whether, and if...

In fact to commit the change before dealing with worst-case performance is a good idea because here we have 2 different issues. But the main idea of this RFC is an attempt to show the better approach to to these kinds of transformations and to suggest to use this approach in the future. At the same time, I'm trying to explain that this patch is not the performance one because the

We are having echo problems with 1 in 6 calls on our Asterisk system. It's a one sided echo, users hear their own voice delayed about half a second and slightly attuneated. Without the echo canceller in Asterisk enabled echo problems occur on 1 in 3 calls and is much worse. We have a trouble ticket open with SBC and have thus far failed to find a cause (they do not believe that it is being caused by hybrid imbalances however). I would like to know any advi...

You may want to rethink your whole approach here: 1. Pie charts are usually a poor choice of graph, there are better choices. 2. Adding percentages to a pie chart is a way of admitting that the pie chart is not doing the job. 3. If you want people to compare percentages, then a table is what is needed. 4. A pie chart with percentages added is essentially a colorful but poorly layed out table.

...t suitable to answer some questions that a pie chart can answer (is the value approximately less than a fourth of the total? Is it less than half?). For some of these questions, even dot-charts require a value label, or the user doing mental calculations to guess approximations. I think I am quite attuned to getting approximate fractions from a pie-chart in shorter time, than on a linear scale like the dot-chart. A modification in a pie chart that draws overlapping areas with a common start point at the top of the circle, can make is more informative than a dot-chart. Something like: * Start draw...

Ok, no one has said it yet so I will. http://37signals.com/svn/archives2/bezos_expeditions_invests_in_37signals.php?102#comments How is this going to affect Rails? Or is it? -- Posted via http://www.ruby-forum.com/.

Hi, I have been trying to improve the coding of some of my puppet recipes and had some trouble so wrote this: http://blog.wl0.org/2011/05/thoughts-about-extlookup-in-puppet/ Comments on the web seem to indicate that extlookup() solves "all problems" but I don''t really see that and hence have proposed a possible way to keep the data closer together and make the extlookup()