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Author: Lonnie Chrisman

Lonnie Chrisman

Lonnie Chrisman

Lonnie Chrisman is Lumina's Chief Technical Officer, where he heads engineering and development of Analytica. He has a PhD in Artificial Intelligence and Computer Science from Carnegie Mellon University and a Bachelor’s degree in Electrical Engineering from University of California at Berkeley.

Author Posts

03/19/2019 | Blogs, Modeling tips & tricks, Videos

Plotting over a Google Map

Here is how to display your geographic data on a Google map background.

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01/30/2019 | Blogs, Data mining, statistics, & AI, Modeling tips & tricks

How to update y = m x + b with new data

Abstract: Bayesian linear regression made super easy and intuitive! You arrive in a new city for the first time, and you’ll …

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10/18/2018 | Blogs, Decision analysis & multi-criteria, Modeling tips & tricks, Risk & uncertainty

Testing hypotheses about causation

In 2002, I developed a statistical framework for testing whether your data provides statistically significant support for the hypothesis that A causes B. I published only one…

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09/20/2018 | Blogs, Data mining, statistics, & AI, Risk & uncertainty

How the strange Cauchy distribution proved useful

On Tuesday I had an interesting exchange with Jorge Muro Arbulú, a professor in Peru, about the Cauchy distribution, which also called the Lorenzian distribution.

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08/08/2018 | Blogs, Modeling tips & tricks, Open-source models, Scripting languages, Python & R

Using Python to parse a Shapefile

A shapefile (*.shp) is a binary file format used by Geographic Information Systems (GIS). I used an existing Python library (Fiona) to read and parse a shape file, and then…

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08/03/2018 | Blogs, Modeling tips & tricks, Scripting languages, Python & R

How to call a Python function from Analytica

I found it pretty easy to call a Python function from Analytica using COM automation. The Component Object Model (COM) integration functionality comes included with the Analytica…

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07/16/2018 | Blogs, Data mining, statistics, & AI, Modeling tips & tricks, Risk & uncertainty

World Cup Soccer. How much does randomness determine the winner?

A few years ago France beat Croatia in the World Cup final. Congratulations to France for winning the last world championship! And also to Croatia for making it to the final…

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06/21/2018 | Blogs, Modeling tips & tricks, Videos

How to limit entry to specific cells of an edit table

Netflix’s basic subscription plan was introduced in May 2014. In a Netflix business model that I created, I have an …

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