Sjmelck

Logistic Regression from the ground up

Wed, 23 Apr 2025 15:51:58 +0200

Introduction

Good day! 👋

In this post, the logistic regression model is covered in detail. This model is used to predict binary outcomes and is well known for its ability to drive interpretability. The objective is to start with the basics of the model formulation, consider how to interpret the model parameters, introduce the concept of how to regularise the model, give the analytical forms of the gradient vector and Hessian matrix, and define how to extend the class to the multi-class classification form.

An introduction to Radial basis functions

Fri, 15 Mar 2024 11:59:05 +0200

Good day 👋

🧠 This is the first in a series of blog posts that deal with radial basis function surrogate models 🧑🏽‍🏫. The end goal will be to implement gradient enhanced models that complete powerful transformation procedures, but, we must first understand and implement the simplest version of these models.

Justin Smith

Mon, 26 Feb 2024 15:48:07 +0200

Welcome to the landing page of Justin Smith.

🐉 Who is Justin Smith?

I am a post-graduate mechanical engineering student at the University of Pretoria with a passion for condition monitoring and machine learning.

💚 Fun question

How can you use the ASCII values of the characters in the word “math” to get to the question posed by Ryan Balshaw?

Introduction to Latex With Assistance From Zotero

Sat, 24 Feb 2024 16:37:48 +0200

Good day 👋

🧠 This blog aims to provide an introduction towards using LaTeX for reports in conjunction with Zotero as a reference manager and Research rabbit to aid “fast-tracking” research.

Outcomes:

Understand how Zotero can be used as a powerful research tool 💪.
Know how to configure Zotero to use a .bib file containing stored references that can be used when typesetting with LaTeX 💁.
Be aware of the basics of other artificial intelligence (AI) research tools such as Research Rabbit 🐇.

Zotero as a research tool with LaTeX

Zotero is not just another tool; it’s a research companion, a digital librarian, and an organizational workspace all in one environment. This section presents how Zotero can improve ones engagement with literature in conjunction with making the connection between reading literature and referencing using LaTeX as a typesetting tool.

Time synchronous averaging and computed order tracking: Explained

Fri, 14 Apr 2023 16:14:08 +0200

Good day 👋

The purpose of this explanation is to detail a high-level overview of the time-synchronous average (TSA) and Computed Order Tracking (COT). This will require a basic understanding of the objectives of TSA and COT, and I will try to provide some explanations and intuition to help those who do not have a good grasp on the concepts. At the end of each section, I provide a step-by-step guide for implementing these methods. If you have any questions, please feel to contact me at ryanbalshaw81@gmail.com .

Johann Bouwer

Fri, 14 Apr 2023 10:33:53 +0200

Welcome to the landing page of Johann Bouwer.

🍜 Who is Johann Bouwer?

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❤️ Fun question

What do you get if you take the square root of 1764?

The Fourier transform: Explained

Thu, 19 Jan 2023 16:18:44 +0200

Good day 👋

So if you are opening this document, you hopefully have some questions about the Fourier Transform (FT), the Discrete Fourier Transform (DFT) or perhaps you are just curious to see what this document entails. Regardless of your reason for opening, I hope that this document makes the FT and DFT more accessible and intuitive. I have attempted to write this from a basic Mechanical Engineering context, so I hope you enjoy this document! If you have any questions, please feel to contact me at ryanbalshaw81@gmail.com .

Douw Marx

Thu, 12 Jan 2023 12:36:52 +0200

Welcome to the landing page of Douw Marx.

🍻 Who is Douw Marx?

I am a Mechanical Engineer. I completed my Masters in Mechanical engineering (with distinction) in the field of condition monitoring. I enjoy programming, statistics and math. I am currently working on my PhD under Prof. Kostis Gryllias at KU Leuven, Belgium. I am working on the MOIRA project as a Marie Sklodowska-Curie fellow. The University of Pretoria is currently undergoing the patenting process for a novel planer mechanism I invented. My creativity is well-balanced with a practical and results-focused side.

Ryan Balshaw

Thu, 12 Jan 2023 12:36:47 +0200

Welcome to the landing page of Ryan Balshaw.

🐔 Who is Ryan Balshaw?

Currently working at Kriterion , I obtained my PhD in Mechanical Engineering at the University of Pretoria, my research is focused on asset condition monitoring using Artificial Intelligence. I am passionate about vibration analysis, machine learning and asset management, with a keen interest in signal processing and it’s applications in practice.

The Origins of Sjmelck

Thu, 12 Jan 2023 12:36:40 +0200

Welcome to the landing page of the origins of Sjmelck! 🎉 We are thrilled to have you join us on this exciting journey.

What is Sjmelck?

In its simplest form, Sjmelck stands for “Sjmelck Just Means Engineers Love Computers K?”, quite a mouthful, isn’t it? But it’s so much more than just an acronym. It represents our mission, our passion and our community.