If you want to wade into the world of machine learning, there are open-source solutions that will usually meet your needs. The question arises as to why anyone would do machine learning entirely in Excel? If you were to go to Reddit or Stack Exchange and ask a question about it, you should be prepared …
Simulation and machine learning are related in that they both revolve around models, but they are very different. In fact, simulation and machine learning are almost opposites. We’ll dive into the differences between the two and how they are used. Simulation Characteristics With simulation the model is often known. In other words, we know how …
If you’re new to machine learning or have no idea what it is, this article is for you. The machine learning field is huge and evolving rapidly, but fear not, we will walk through the process of machine learning to get your feet wet. We’ll cover the following topics: What is machine learning? The process …
Often data sets have classes that are not equally represented. This class imbalance can be a source of frustration when you realize the accuracy of your first attempt at training a machine learning model simply reflects the percentage of the most common class. Fortunately Vaimal has features that allow you ways to overcome class imbalance …
Overtraining is a concern that we must be aware of when training a machine learning model. Vaimal allows several methods to reduce the potential for overtraining. Before discussing how to prevent overtraining, lets see what overtraining looks like. Overtraining Training error is a function of the difference between predicted outcome and actual outcome for each …
In this article we are going to discuss training neural networks using particle swarm optimization (PSO). Training a neural network is an optimization problem so the optimization algorithm is of primary importance. Vaimal has three types of neural networks available: Multi-layer perceptrons (MLP) Probabilistic neural networks (PNN) Generalized regression neural networks (GRNN) When training MLPs we …