368 search results for "pCA"

A Visualization of World Cuisines

December 28, 2015
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A Visualization of World Cuisines

In a previous post, we had ‘mapped’ the culinary diversity in India through a visualization of food consumption patterns. Since then, one of the topics in my to-do list was a visualization of world cuisines. The primary question was similar to that asked of the Indian cuisine: Are cuisines of geographically and culturally closer regions

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6 Machine Learning Visualizations made in Python and R

December 22, 2015
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6 Machine Learning Visualizations made in Python and R

These 6 visualizations were created in Plotly between 2014 and 2016 and are in some way related to machine learning. They were created using Plotly’s free and open-source graphing libraries for Python and R. 1. machine learning classifier comparison Made in Python by Étienne Tétreault-Pinard View the interactive version 2. COUNRIES WHERE AI IS MOST RESEARCHED Made in Python by Sebastian Raschka View the interactive version 3. 3D K-MEANS CLUSTERING WITH CUSTOM HOVER TEXT

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Importance of exports and economic growth, cross-country time series

December 11, 2015
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Importance of exports and economic growth, cross-country time series

Exports and economic growth I was looking to show a more substantive piece of analysis using the World Development Indicators data, and at the same time show how to get started on fitting a mixed effects model with grouped time series data. The relationship between exports’ importance in an economy and economic growth forms a good start as it...

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Where are the cars?

December 5, 2015
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Where are the cars?

After I published an article on how to scrape advanced shooting data from stat.nba.com, a friend of mine contact me to see whether I may be able to scrape some data from zipcar or car2go’s API. So I looked into it and found it is quite straight forward to do. Here is an example to scrape data from car2go.​Car2go...

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The Data-Driven Weekly #1.2

November 17, 2015
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The Data-Driven Weekly #1.2

Last week witnessed a number of exciting announcements from the big data and machine learning space. What it shows is …Continue reading →

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Using htmlwidgets with knitr and Jekyll

November 15, 2015
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Using htmlwidgets with knitr and Jekyll

A few weeks ago I gave a talk at BARUG (and wrote a post) about blogging with the excellent knitr-jekyll repo. Yihui’s system is fantastic, but it does have one drawback: None of those fancy new htmlwidgets packages seem to work… A few people have run into this. I recently figured out...

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H2O World 2015

November 12, 2015
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H2O World 2015

by Joseph Rickert The second, annual H2O World conference finished up yesterday. More than 700 people from all over the US attended the three-day event that was held at the Computer History Museum in Mountain View, California; a venue that pretty much sits well within the blast radius of ground zero for Data Science in the Silicon Valley. This...

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Emoticons decoder for social media sentiment analysis in R

October 16, 2015
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Emoticons decoder for social media sentiment analysis in R

If you have ever retrieved data from Twitter, Facebook or Instagram with R, you might have noticed a strange phenomenon. While R seems to be able to display some emoticons properly, many other times it doesn’t, making any further analysis impossible unless you get rid of them. With a little hack, I decoded these emoticons and put them all...

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A New Method for Statistical Disclosure Limitation, I

October 15, 2015
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A New Method for Statistical Disclosure Limitation, I

The Statistical Disclosure Limitation (SDL) problem involves modifying a data set in such a manner that statistical analysis on the modified data is reasonably close to that performed on the original data, while preserving the privacy of individuals in the data set. For instance, we might have a medical data set on which we want … Continue reading...

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User-friendly scaling

October 8, 2015
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User-friendly scaling

Back in the mists of time, whilst programming early versions of Canoco, Cajo ter Braak decided to allow users to specify how species and site ordination scores were scaled relative to one another via a simple numeric coding system. This was fine for the DOS-based software that Canoco was at the time; you entered 2 when prompted and you...

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