3D plots in R with Plotly
Plotly presents a visually pleasing way to create 3D plots in R and Python.
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If you let them build it!
Presented our paper in Hawaii, the paper was nominated for best paper. The paper is about add-on content.
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Board Games and Miniature Painting
Alright, so far I have been posting about my research and teaching… Now that I have a job that I feel fairly confident about, I think I can actually blog with a bit more liberty. I have been a huge fan of boardgames since I laid my eyes on the “Milyoner” (Turkish knockoff of monopoly)….
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Understanding Neural Networks
A few months ago I made a presentation on Tensor Flow for MBA students. The challenge was to simplify the technical underpinnings of the technology sufficiently while preserving a semblance of what it was good for. One particular challenge was visualizing the technology. Showing python code and output was out of the question and at…
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Writing Better R Code
When I teach R, I always caution the audiences about the quirks of R programming. It is very typical for someone with a background in Java or Python to write code in R that will take forever to execute (like I used to do, and sometimes still do). I warn the students about loops and…
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Google TensorFlow
Google open sourced TensorFlow (TF), a distributed machine learning library, in November. The basic idea is that, you build your ML process into a graph and let TF handle the running and distribution of the work between cores. Be it cores in your CPU or GPU, TF has you covered. The dataflow graph works much…
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R Workshop Documentation (Updated)
I have been working on the upcoming R workshop for a few weeks now. Finally I am ready to publish part of the material in the spirit of open source, so that others can benefit from, and improve upon my material. I uploaded all the materials to my github repository. There are a few documents…
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World Map Visualizations Based on Data in R
I am working on a workshop for Business Analytics masters students. Part of the demos I intend to use are geographical visualizations. I am using rworldmap package to achieve these. Let us say you have geographical data in a data.frame such as country, with country identifiers stored in “ip_iso2” column in ISO2 format and the…
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AWS Educate For Teaching and Research
I was pleasantly surprised to find out that Arizona State University was a member of AWS educate, more so since my year of free trial ran out last month and I just payed my first bill for the Amazon instance I use for data collection. Amazon Web Services provides an easy to deploy, easy to…
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R and Messy Date Formats in Data
For one of my projects I am using Python scripts to scrape web pages. Unfortunately, the dates in the pages are not in a consistent format. Some are like Jun 19 2014, whereas others are 28-Mar-14, yet others are 2010-Sep-20. The trickiest ones are the ones like Jun-10. Thanks to plannapus in stack overflow I…
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Geolocation Matching Based on Latitudes and Longitudes in R
Today I was faced with an interesting challenge, finding time zones for users defined by latitude and longitude. Thanks to extensive package libraries of R, the solution was not hard at all.
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Marketing Research Methods in SAS
I am not much of a SAS person, I feel more comfortable in R. Yet there is one area where I feel SAS excels: experimental design, especially discrete choice experiments. Now to be honest, Aizaki 2012, also presents some basic guidelines in choice experiment design but the macros are nowhere near as elegant or as…
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Transactions on Replication Research, a Replication Journal for IS Field!
Through our discussions with the PhD students in the department, the lack of a replication journal has always been something we felt the lack of. Everybody agreed that scientific progress required replicability of results but, no one was able to spare the time to an endeavour which would surely go unrewarded. Now that there is…
