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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

06/02/2018 | Blogs, Data mining, statistics, & AI, Modeling tips & tricks, Videos

An Analytica model that recognizes images

I had a lot of fun building and playing with an Analytica model that analyses the pixels of an image to figure out what it is an image of. It implements the resnet18 model…

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05/23/2018 | Analytica in the cloud, Blogs, Scripting languages, Python & R

Using the Analytica Decision Engine (ADE) from Python

Today I interacted with an Analytica from Python, which for me was my first time doing so. To do so, I used the Analytica Decision Engine (ADE), which bundles the core Analytica…

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05/16/2018 | Blogs, Modeling tips & tricks, Videos

Adding alternative axis scales to a graph

Starting with a graph that varies by Time in units of Seconds, I show how to configure the graph so you can quickly change the horizontal scale from Seconds to Hours, Days or…

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05/05/2018 | Blogs, Modeling tips & tricks, Videos

Cell formatting in DetermTable that shows which cells are active

In this Analytica 5 Video Short, I configure a DetermTable to use cell formatting so you can tell which data will be used by the computed result given the model’s current…

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05/04/2018 | Blogs, Modeling tips & tricks, Videos

Analytica video shorts: MultiChoice controls

In this video, I showcase two uses for MultiChoice controls: For use in Selective Parametric Analysis, and for limited an index to a subset during your model’s calculations.

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04/12/2018 | Blogs, Decision analysis & multi-criteria, Modeling tips & tricks, Open-source models

What’s the best retirement account type for me? 401(k), IRA, Roth, other?

It’s tax week here in the US, and like many other people, I have less than a week to finalize my tax returns. I also have some last minute decisions. Should I, or my wife, …

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04/04/2018 | Blogs, Business & finance, Modeling tips & tricks, Open-source models

How to simplify the IRS tax tables

The federal income tax in the United States uses a series of increasing tax brackets, so that those who earn more pay a higher percentage of their income in taxes.

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03/14/2018 | Blogs, Modeling tips & tricks, Videos

Pie charts: drawing and interacting with images

Today I’m celebrating π day with a three part series of Analytica 5 video shorts, during which I create an interactive …

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