Articles by Joel Cadwell

The Mad Hatter Explains Support Vector Machines

May 9, 2016 | 0 Comments

"Hatter?" asked Alice, "Why are support vector machines so hard to understand?" Suddenly, before you can ask yourself why Alice is studying machine learning in the middle of the 19th century, the Hatter disappeared. "Where did he go?" thought Alice as ...
[Read more...]

The Mad Hatter Explains Support Vector Machines

May 9, 2016 | 0 Comments

"Hatter?" asked Alice, "Why are support vector machines so hard to understand?" Suddenly, before you can ask yourself why Alice is studying machine learning in the middle of the 19th century, the Hatter disappeared. "Where did he go?" thought Alice as ...
[Read more...]

Choice Modeling with Features Defined by Consumers and Not Researchers

March 25, 2016 | 0 Comments

Choice modeling begins with a researcher "deciding on what attributes or levels fully describe the good or service." This is consistent with the early neural networks in which features were precoded outside of the learning model. That is, choice modeling can be seen as learning the feature weights that recognize ... [Read more...]

A Data Science Solution to the Question "What is Data Science?"

January 8, 2016 | 0 Comments

As this flowchart from Wikipedia illustrates, data science is about collecting, cleaning, analyzing and reporting data. But is it data science or just or a "sexed up term" for Statistics (see embedded quote by Nate Silver)? It's difficult to separate the two at this level of generality, so perhaps we ... [Read more...]

Modeling How Consumers Simplify the Purchase Process by Copying Others

December 23, 2015 | 0 Comments

A Flower That Fits the Bill Marketing borrows the biological notion of coevolution to explain the progressive "fit" between products and consumers. While evolutionary time may seem a bit slow for product innovation and adoption, the same metaphor can be found in models of assimilation and accommodation from cultural and ... [Read more...]

BayesiaLab-Like Network Graphs for Free with R

December 18, 2015 | 0 Comments

My screen has been filled with ads from BayesiaLab since I downloaded their free book. Just as I began to have regrets, I received an email invitation to try out their demo datasets. I was especially interested in their perfume ratings data. In this mo... [Read more...]

BayesiaLab-Like Network Graphs for Free with R

December 18, 2015 | 0 Comments

My screen has been filled with ads from BayesiaLab since I downloaded their free book. Just as I began to have regrets, I received an email invitation to try out their demo datasets. I was especially interested in their perfume ratings data. In this monadic product test, each of 1,321 French ... [Read more...]
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