2170 search results for "Map"

Matching clustering solutions using the ‘Hungarian method’

November 19, 2012
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Matching clustering solutions using the ‘Hungarian method’

Some time ago I stumbled upon a problem connected with the labels of a clustering. The partition an instance belongs to, is mostly labeled through an integer ranging from 1 to K, where k is the number of clusters. The task at that time was to plot a map of the results from the clustering of spatial polygons...

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The Hour of Hell of Every Morning – Commute Analysis, April to October 2012

November 19, 2012
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The Hour of Hell of Every Morning – Commute Analysis, April to October 2012

IntroductionSo a little while ago I quit my job.Well, actually, that sounds really negative. I'm told that when you are discussing large changes in your life, like finding a new career, relationship, or brand of diet soda, it's important to frame things positively.So let me rephrase that - I've left job I previously held to pursue other directions. Why?...

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Genome annotation with NCBI2R

November 18, 2012
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It's very convenient manage data with R: you can import your dataset, you could find many packages which respond to your needs, then you could plot your results. However it could be very bothersome retrieve the data from online databases. … Continue reading →

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Datacentric product development and the rebirth of engineering

November 17, 2012
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Datacentric product development and the rebirth of engineering

An old irony in New York is the ubiquity of the ‘gourmet deli’. It is hard to find a deli …Continue reading »

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The Race to the F1 2012 Drivers’ Championship – Initial Sketches

November 16, 2012
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The Race to the F1 2012 Drivers’ Championship – Initial Sketches

In part inspired by the chart described in The electoral map sans the map, I thought I’d start mulling over a quick sketch showing the race to the 2012 Formula One Drivers’ Championship. The chart needs to show tension somehow, so in this first really quick and simple rough sketch, you really do have to

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Bottom-up creation of data-driven capabilities: automate your work

November 15, 2012
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My previous post on how to transform an organization into a more data-driven version of itself made a pretty big assumption that often doesn’t hold true. I assumed that people in the organization wanted their company or agency to become more data-driven. I think almost everyone says they want that if asked. I even think

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How to choose your next holidays destination – Uniform distribution on a sphere

November 14, 2012
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How to choose your next holidays destination – Uniform distribution on a sphere

If you want to choose randomly your next holidays destination, you are likely to process in a way which is certainly biased. Especially if you choose randomly the latitude and the longitude. A bit like they do in this lovely advertising (For those of y...

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Big Data ETL and Big Data Analysis

November 14, 2012
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Big Data ETL and Big Data Analysis

I was at Strata New York 2012 last month. Great conference! Thanks O'Reilly media for assembling the industry leaders and running it well.I understand it was too crowded for some of my out-of-town friends. Stepping out to the streets of mid-town Manhat...

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On Box-Cox transform in regression models

November 13, 2012
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On Box-Cox transform in regression models

A few days ago, a former student of mine, David, contacted me about Box-Cox tests in linear models. It made me look more carefully at the test, and I do not understand what is computed, to be honest. Let us start with something simple, like a linea...

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Trees with the rpart package

November 13, 2012
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Trees with the rpart package

What are trees? Trees (also called decision trees, recursive partitioning) are a simple yet powerful tool in predictive statistics. The idea is to split the covariable space into many partitions and to fit a constant model of the response variable in each partition. In case of regression, the mean...

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