2720 search results for "GIS"

An update on visualizing Bayesian updating

August 17, 2012
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An update on visualizing Bayesian updating

A while ago I wrote this post with some R code to visualize the updating of a beta distribution as the outcome of Bernoulli trials are observed. The code provided a single plot of this process, with all the curves overlayed on top of one another. Then John Myles White (co-author of Machine Learning for

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plot.xts is wonderful

August 16, 2012
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plot.xts is wonderful

As mentioned in FOSS Trading post A New plot.xts yesterday “The Google Summer of Code (2012) project to extend xts has produced a very promising new plot.xts function. Michael Weylandt, the project's student, wrote R-SIG-Finance to request impressio...

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INLA: Bayes goes to Norway

August 15, 2012
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INLA: Bayes goes to Norway

INLA is not the Norwegian answer to ABBA; that would probably be a-ha. INLA is the answer to ‘Why do I have enough time to cook a three-course meal while running MCMC analyses?”. Integrated Nested Laplace Approximations (INLA) is based … Continue reading →

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What does a generalized linear model do?

August 15, 2012
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What does a generalized linear model do?

What does a generalized linear model do? R supplies a modeling function called glm() that fits generalized linear models (abbreviated as GLMs). A natural question is what does it do and what problem is it solving for you? We work some examples and place generalized linear models in context with other techniques.For predicting a categorical Related posts:

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Random and fixed effects in sensory profiling

August 14, 2012
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Random and fixed effects in sensory profiling

I am reading Introduction into mixed modelling by N.W. Galway. It is partly a repeat of things I know, but I expect to use mixed models quite a lot the coming time, so it is good to repeat these things.My problem with this book is a sensory exampl...

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The essence of a handwritten digit

August 13, 2012
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The essence of a handwritten digit

If you haven’t yet discovered the competitive machine learning site kaggle.com, please do so now. I’ll wait. Great – so, you checked it out, fell in love and have made it back. I recently downloaded the data for the getting started competition. It consists of 42000 labelled images (28×28) of hand written digits 0-9. The

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User Input using tcl/tk

August 13, 2012
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User Input using tcl/tk

I was inspired by Kay Cichini  recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector (of variable names)

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User Input using tcl/tk

August 13, 2012
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User Input using tcl/tk

I was inspired by Kay Cichini recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector...

Read more »

User Input using tcl/tk

August 13, 2012
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User Input using tcl/tk

I was inspired by Kay Cichini recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector...

Read more »

Zzzzzz….. – Quantified Self Toronto #14

August 12, 2012
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Zzzzzz….. – Quantified Self Toronto #14

Sleep is another one of those things like diet, where I feel if you asked anyone if they wanted to improve that area of their life most would say yes.I remember hearing a quote that sleep is like sex; no one is quite sure how much everyone else is getting, but they are pretty sure it is more than...

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