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Data Prep for Machine Learning: Missing Data

Turning his attention to the extremely time-consuming task of machine learning data preparation, Dr. James McCaffrey of Microsoft Research explains how to examine data files and how to identify and deal with missing data.

Microsoft Ships 5th Previews of .NET 5, Entity Framework Core 5

Microsoft today announced the fifth previews of .NET 5.0 and Entity Framework Core 5.0 en route to a November general release date, though not all of the planned functionality will be finalized by then because of the COVID-19 pandemic.

Clustering Non-Numeric Data Using C#

Clustering non-numeric -- or categorial -- data is surprisingly difficult, but it's explained here by resident data scientist Dr. James McCaffrey of Microsoft Research, who provides all the code you need for a complete system using an algorithm based on a metric called category utility (CU), a measure how much information you gain by clustering.

New for VS Code: MongoDB, Kite AI-Powered JavaScript Completions

This week sees several significant additions to the Visual Studio Code ecosystem: an update to the Python extension; the popular open source MongoDB database; and AI-powered JavaScript code completions from Kite.

Data Clustering with K-Means++ Using C#

Dr. James McCaffrey of Microsoft Research explains the k-means++ technique for data clustering, the process of grouping data items so that similar items are in the same cluster, for human examination to see if any interesting patterns have emerged or for software systems such as anomaly detection.

What's New for Azure Cosmos DB SDKs for .NET and Java

Microsoft recently beefed up the .NET and Java SDKs for Azure Cosmos DB, a globally distributed, multi-model database service that helps users and developers elastically and independently scale throughput and storage across Azure regions with a click of a button.

Microsoft Engineer: 'It's Time to Move OData to .NET 5'

Microsoft engineer Sam Xu says "it’s time to move OData to .NET 5" and in a new blog post he shows how to do just that.

How to Invert a Machine Learning Matrix Using C#

VSM Senior Technical Editor Dr. James McCaffrey, of Microsoft Research, explains why inverting a matrix -- one of the more common tasks in data science and machine learning -- is difficult and presents code that you can use as-is, or as a starting point for custom matrix inversion scenarios.

Microsoft Ships New Preview of .NET 5, Already Handling 50% of .NET Site Traffic

In announcing today's second preview of the big, unifying .NET 5 that's going GA in November, Microsoft revealed the next-gen platform is already handling 50 percent of the traffic to the company's main .NET website.

How to Train a Machine Learning Radial Basis Function Network Using C#

A radial basis function network (RBF network) is a software system that's similar to a single hidden layer neural network, explains Dr. James McCaffrey of Microsoft Research, who uses a full C# code sample and screenshots to show how to train an RBF network classifier.

How to Create a Radial Basis Function Network Using C#

Dr. James McCaffrey of Microsoft Research explains how to design a radial basis function (RBF) network -- a software system similar to a single hidden layer neural network -- and describes how an RBF network computes its output.

How to Do Machine Learning Evolutionary Optimization Using C#

Resident data scientist Dr. James McCaffrey of Microsoft Research turns his attention to evolutionary optimization, using a full code download, screenshots and graphics to explain this machine learning technique used to train many types of models by modeling the biological processes of natural selection, evolution, and mutation.

Entity Framework Core Migrations

Eric Vogel uses code samples and screenshots to demonstrate how to do Entity Framework Core migrations in a .NET Core application through the command line and in code.

Floating White Boxes Graphic

How to Do Multi-Class Logistic Regression Using C#

Dr. James McCaffrey of Microsoft Research uses a full code program, examples and graphics to explain multi-class logistic regression, an extension technique that allows you to predict a class that can be one of three or more possible values, such as predicting the political leaning of a person (conservative, moderate, liberal) based on age, sex, annual income and so on.

Microsoft: Move from Traditional ASP.NET to 'Core' Requires 'Heavy Lifting'

There are plenty of reasons to move traditional ASP.NET web apps -- part of the old .NET Framework -- to the new cross-platform direction, ASP.NET Core, but beware it will require some "heavy lifting," Microsoft says.

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