Blog Archives

stone flakes III

June 22, 2014
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stone flakes III

Stone flakes are waste products from the tool making process in the stone age. This is the second post, first post was clustering, second linking to hominid type. The data also contains a more or less continuous age variable, which gives possibili...

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Stone flakes II

June 16, 2014
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Stone flakes II

Continuing from last week, the aim is now to classify the stone flakes based on their various properties. Three methods are used. LDA is an obvious standard. A classification tree is both simple and visually appealing. Random forest as a complex method...

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stone flakes

June 6, 2014
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stone flakes

I browsed through UC Irvine Machine Learning Repository! the other day and noticed a nice data set regarding stone flakes produced by our ancestors, the prehistoric men. To quote the dataset owners:'The data set concerns the earliest history ...

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Autocorrelation in project Tycho’s measles data

June 1, 2014
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Autocorrelation in project Tycho’s measles data

Project Tycho includes data from all weekly notifiable disease reports for the United States dating back to 1888. These data are freely available to anybody interested.I have looked at Ptoject Tycho's measles data before, general look, incidence,...

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Significant birthdays in the weekend

May 25, 2014
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I am a listener to BBC's podcast More or Less. In the program Tim Harford looks at data with both humour and determination to find what the numbers mean. Last week he handled a listener question. Does everybody get a significant birthday (20, 30 years ...

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European MEP data, part 3

May 18, 2014
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European MEP data, part 3

As final post on European MEPs voting I wanted to look at the individual MEP. The variables examined are how often present and how often present but not voted. The latter might be a marker of sign in and slope off. The analysis chosen is a hierarchical Bayesian analysis, which should push individual's outcomes towards the population...

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European MEP Data, Part 2

May 11, 2014
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European MEP Data, Part 2

Following last week's short examination, I now wanted to drill down a bit more in the voting behaviour as given in data from votewatch.eu on voting of MEPs.Votewatch's Data describe how often MEPs voted what in the European Parliament. For each MEP the number of votes, percentages Yes, No, Abstain, number of elections and...

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European MEP Data

May 4, 2014
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European MEP Data

Pretty soon we will be having European Elections. I cannot tell when exactly, that depends on country. Over here the elections get a some attention, which is how I ran into data from votewatch.eu on voting of MEPs. That was just too interesting, so I made some plots.Data Data describe how often MEPs voted what in the...

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Project Tycho, Correlation between states

April 27, 2014
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Project Tycho, Correlation between states

In this fourth post on Measles data I want to have a look at correlation between states. As described before, the data is from Project Tycho, which contains data from all weekly notifiable disease reports for the United States dating back to 1888...

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High incidence in Measles Data in Project Tycho

April 21, 2014
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High incidence in Measles Data in Project Tycho

In this third post on Measles data I want to have a look at some high incidence occasions. As described before, the data is from Project Tycho, which contains data from all weekly notifiable disease reports for the United States dating back to 1888. These data are freely available to anybody...

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