data science

Cyclist in the rain. Blog about python scraping data from wunderground rainfall data.

Analysis of Weather data using Pandas, Python, and Seaborn

The most recent post on this site was an analysis of how often people cycling to work actually get rained on in different cities around the world. You can check it out here. The analysis was completed using data from the Wunderground weather website, Python, specifically the Pandas and Seaborn libraries. In this post, I will …

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Summarising, Aggregating, and Grouping data in Python Pandas

Pandas – Python Data Analysis Library I’ve recently started using Python’s excellent Pandas library as a data analysis tool, and, while finding the transition from R’s excellent data.table library frustrating at times, I’m finding my way around and finding most things work quite well. One aspect that I’ve recently been exploring is the task of …

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Scraping Dublin City Bikes Data Using Python

FAST TRACK: There is some python code that allows you to scrape bike availability from bike schemes at the bottom of this post… SLOW TRACK: As a recent aside, I was interested in collecting Dublin Bikes usage data over a long time period for data visualisation and exploration purposes. The Dublinbikes scheme was launched in …

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Multiple heatmaps

Self-Organising Maps for Customer Segmentation using R

Self-Organising Maps Self-Organising Maps (SOMs) are an unsupervised data visualisation technique that can be used to visualise high-dimensional data sets in lower (typically 2) dimensional representations. In this post, we examine the use of R to create a SOM for customer segmentation. The figures shown here used use the 2011 Irish Census information for the …

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Data Science Videos from Dublin WebSummit 2013

The Web Summit, Europes largest technology-industry conference was held in Dublin this week. An annual event since 2010, the Web Summit attracted over ten thousand visitors from over 90 countries. The Web Summit puts Ireland on the international startup and internet scene. With speakers like Elon Musk (founder of Paypal, SpaceX, and Tesla) and representatives from …

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