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Lonnie Chrisman

Lonnie Chrisman, PhD, is Lumina’s Chief Technical Officer, where he heads engineering and development of Analytica®. He has authored dozens refereed publications in the areas of machine learning, Artificial Intelligence planning, robotics, probabilistic inference, Bayesian networks, and computational biology. He was was in eighth grade when he had his first paid programming job. He was awarded the Alton B. Zerby award “Most outstanding Electrical Engineering Student in the USA”, 1979. He has a PhD in Artificial Intelligence and Computer Science from Carnegie Mellon University; and a BS in Electrical Engineering from University of California at Berkeley.  Lonnie used Analytica for seismic structural analysis of an extension that he built to his own home where he lives with his wife and four daughters: So, he really trusts Analytica calculations!

Analytica 5.0 Video Short: Hiding and Disabling Model User-Interface Controls

Lonnie Chrisman 10 Dec 2017

Analytica 5.0 added several features that allow you to improve your end-user interfaces that you create for your model. One of those enhancements is the ChangeNodeVisibility( ) function that allows you to hide and show, or disable and enable various objects...

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Analytica 5.0 Video Short: An expression to crop an image

Lonnie Chrisman 13 Nov 2017

In this video short, I create an expression that extracts a small image from a larger one. In other words, it crops the original image to a smaller rectangular region of the image. Then I have it array abstract (now...

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Analytica 5.0 Video Short: How to resize an image

Lonnie Chrisman 13 Nov 2017

This 2 minute video short shows you how to resize an image after you've pasted it into a diagram. The Analytica 5.0 Video shorts series -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series primarily...

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Analytica 5.0 Video Short: The length of an index

Lonnie Chrisman 07 Nov 2017

The Analytica 5.0 Video shorts series -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series primarily focuses on features that are New in Analytica 5.0.  Finding the length of an index is obviously pretty...

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Analytica 5.0 Video Short: How to display negative numbers in red

Lonnie Chrisman 06 Nov 2017

The Analytica 5.0 Video shorts series -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series primarily focuses on features that are New in Analytica 5.0.  Today's video short shows how to display negative...

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Analytica 5.0 Video Short: How to draw an influence diagram

Lonnie Chrisman 27 Oct 2017

This is the third installment in the Analytica 5.0 Video shorts series -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series primarily focuses on features that are New in Analytica 5.0.  The way you...

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Analytica 5.0 Video Short: Operator + used to concatenate text

Lonnie Chrisman 27 Oct 2017

This is the second installment in the Analytica 5.0 Video shorts series -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series primarily focuses on features that are New in Analytica 5.0.  Since I'm putting...

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Introducing Analytica 5.0 Video Shorts: The Toolbar

Lonnie Chrisman 26 Oct 2017

Today I kick off a new project that I'm calling Analytica 5.0 Video Shorts -- short (under 5 minutes) videos showcasing an individual topic or feature in Analytica. The series will primarily focus on features that are new in Analytica 5.0,...

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Faster evaluation in Analytica 5.0

Lonnie Chrisman 11 Oct 2017 Analytica 5.0

Since the October 30, 2017 release of Analytica 5.0 is fast approaching, it seemed like a good time to re-run the benchmark timing tests from my earlier blog posting, "Faster evaluation in Analytica 4.6", to see how the upcoming release compares. Speed enhancements can...

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Marginal Abatement part 2 - adding a dimension

Lonnie Chrisman 18 Feb 2016

In my earlier blog article, Marginal Abatement, I explained what a Marginal Abatement graph is and how to set up such a graph in Analytica. In this article, I'm going to generalize that model to array-abstract over additional dimensions,...

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