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Project Euler — Problem 187

December 23, 2010
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http://projecteuler.net/index.php?section=problems&id=187A composite is a number containing at least two prime factors. For example, 15 = 3 × 5; 9 = 3 × 3; 12 = 2 × 2 × 3.There are ten composites below thirty containing precisely two, not necessarily distinct, prime factors: 4, 6, 9, 10, 14, 15, 21, 22, 25, 26.Read...

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Project Euler — Problem 187

December 23, 2010
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http://projecteuler.net/index.php?section=problems&id=187A composite is a number containing at least two prime factors. For example, 15 = 3 × 5; 9 = 3 × 3; 12 = 2 × 2 × 3.There are ten composites below thirty containing precisely two, not necessarily distinct, prime factors: 4, 6, 9, 10, 14, 15, 21, 22, 25, 26.Read...

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Root finding

December 4, 2010
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Numerical root finding methods use iteration, producing a sequence of numbers that hopefully converge towards a limits which is a root. In this post, only focus four basic algorithm on root finding, and covers bisection method, fixed point method, Newton-Raphson method, and secant method.Read More: 1886 Words Totally

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Root finding

December 4, 2010
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Numerical root finding methods use iteration, producing a sequence of numbers that hopefully converge towards a limits which is a root. In this post, only focus four basic algorithm on root finding, and covers bisection method, fixed point method, Newton-Raphson method, and secant method.Read More: 1896 Words Totally

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bubble chart by using ggplot2

December 1, 2010
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bubble chart by using ggplot2

The visualization represented by Hans Rosling’s TED talk was very impressive. FlowingData provides a tutorial on making bubble chart in R. I try to create bubble chart by using ggplot2.With the dataset provided by FlowingData,The bubble chart was made by the following code.Read More: 548 Words Totally

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bubble chart by using ggplot2

December 1, 2010
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bubble chart by using ggplot2

The visualization represented by Hans Rosling’s TED talk was very impressive. FlowingData provides a tutorial on making bubble chart in R. I prefer ggplot2 for graphics.

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The avalanche of publications mentioning GO

November 30, 2010
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The avalanche of publications mentioning GO

Gene Ontology is the de facto standard for annotation of gene products. It has been widely used in biological data mining, and I believe it will play more central role in the future.Publications mentioning GO was collected and deposited in GO ftp, and can be accessed (ftp://ftp.geneontology.org/go/doc/).Read More: 454 Words Totally

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The avalanche of publications mentioning GO

November 30, 2010
By
The avalanche of publications mentioning GO

Gene Ontology is the de facto standard for annotation of gene products. It has been widely used in biological data mining, and I believe it will play more central role in the future.Publications mentioning GO was collected and deposited in GO ftp, and can be accessed (ftp://ftp.geneontology.org/go/doc/).Read More: 454 Words Totally

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GOSemSim redesign in terms of S4 classes

November 30, 2010
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I started to develop GOSemSim package two years ago when I was not quite familiar with R. I am very happy to see that someone use it and found it helpful.I try to learn S4 and redesign GOSemSim with S4 classes and methods in the pass two weeks, and the very first version was implemented. As I’m...

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GOSemSim redesign in terms of S4 classes

November 30, 2010
By

I started to develop GOSemSim package two years ago when I was not quite familiar with R. I am very happy to see that someone use it and found it helpful.I try to learn S4 and redesign GOSemSim with S4 classes and methods in the pass two weeks, and the very first version was implemented. As I’m not...

Read more »