Category Archives: Machine Learning

Recap of the 2017 DevIntersection Conference

I recently spoke at (and attended talks at) the 2017 DevIntersection Conference. The event was held October 29 to November 3, 2017, at the MGM Grand hotel in Las Vegas. There are actually several DevIntersection conferences every year, but the … Continue reading

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NFL 2017 Week 10 Predictions – Zoltar Goes Crazy

Zoltar is my NFL football machine learning prediction system. It’s a hybrid system that uses a custom “reinforcement learning” algorithm plus a neural network. Here are Zoltar’s predictions for week #10 of the 2017 NFL season: Zoltar: seahawks by 0 … Continue reading

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Kernel Logistic Regression Using C#

I wrote an article titled “Kernel Logistic Regression Using C#” in the November 2017 issue of MSDN Magazine. See https://msdn.microsoft.com/en-us/magazine/mt845620. The goal of kernel logistic regression (KLR) is to make a binary prediction — a scenario where there are just … Continue reading

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Example of Calculating a Covariance Matrix

The covariance matrix is a math concept that occurs in several areas of machine learning. If you have a set of n numeric data items, where each data item has d dimensions, then the covariance matrix is a d-by-d symmetric … Continue reading

Posted in Machine Learning

Neural Network Batch Training Using Python

I wrote an article titled “Neural Network Batch Training using Python” in the October 2017 issue of Visual Studio Magazine. See https://visualstudiomagazine.com/articles/2017/10/01/batch-training.aspx. The idea of batch training is a fundamental machine learning concept. When training a neural network, there are … Continue reading

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More on Sampling from the Beta Distribution using C#

I recently needed to implement a function that draws samples from the Beta distribution. There are several algorithms, and most are very complex. I set out to find a very simple implementation. One of the standard algorithms comes from a … Continue reading

Posted in Machine Learning

NFL 2017 Week 9 Predictions – Zoltar Likes Vegas Underdogs Colts, Giants, Dolphins, Packers

Zoltar is my NFL football machine learning prediction system. It’s a hybrid system that uses a custom reinforcement learning algorithm plus a neural network. Here are Zoltar’s predictions for week #9 of the 2017 NFL season: Zoltar: bills by 2 … Continue reading

Posted in Machine Learning, Zoltar