Tom Bettenhausen

Technology guy . Building and maintaining websites, applications and Internet technologies.

k-Means and Hierarchial clustering

k-Means and Hierarchical Clustering

Clustering is an unsupervised machine learning method used to group similar instances (data points) into clusters without having prior labels for these groups. The idea is that data in one cluster is more similar to each other than to those in other clusters. Let’s delve into two of the most popular clustering algorithms: k-Means and…

Read More
Decision trees and random forests

Decision trees & Random forests

Decision Trees Decision Trees are a popular machine learning algorithm used for both classification and regression tasks. They are a non-parametric supervised learning method. Basic Structure: How Decision Trees Work: Algorithm to Build a Decision Tree (like CART – Classification and Regression Trees): Strengths: Limitations: Random Forests Random Forests is an ensemble learning method that…

Read More
Neural Networks and machne learning

Machine learning: Neural Networks

Neural networks, particularly artificial neural networks (ANNs), are a foundational element of modern artificial intelligence and machine learning. They are algorithms inspired by the structure and function of the brain’s biological neural networks. The primary aim of a neural network is to recognize patterns, which makes them particularly effective for tasks such as classification, regression,…

Read More
logistic regression and machine learning

Logistic Regression in machine learning

Logistic Regression is a statistical method and a fundamental classification algorithm in machine learning used for predicting the probability of a given instance belonging to a particular category in a binary or multi-class classification problem. Basic Idea: While linear regression predicts a continuous outcome, logistic regression predicts a probability that the given instance belongs to…

Read More
deveoping a wordpress plugin

Developing a WordPress plugin

Developing a WordPress plugin requires understanding of PHP (the programming language behind WordPress), as well as knowledge of WordPress core functions, hooks, and filters. Here’s a basic step-by-step guide to developing a WordPress plugin: Remember, developing a WordPress plugin involves iterative testing. Always backup your data, and preferably develop on a staging or local environment…

Read More
Alfama district in Lisbon Portugal

3 Days in Lisbon Portugal

My wife and I have never been to Lisbon, the capital city of Portugal, but it’s supposed to be a charming and culturally-rich destination with a blend of modernity and old-world charm. I understand it’s 400 hundred years older than Rome so only Athens would be older in Europe. Here are some of the must…

Read More