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2025-12-18 17:57:01 -

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2025-12-18 17:57:01 -

Building a neural network in Excel might sound like a joke, but it's actually one of the best ways to demystify what's happening under the hood. This walkthrough strips away the abstraction of frameworks and shows forward/backprop as pure math you can click through cell by cell. Great resource for anyone who learns by seeing every calculation laid bare.

TOWARDSDATASCIENCE.COM

The Machine Learning “Advent Calendar” Day 18: Neural Network Classifier in Excel

Here is a **short, clear excerpt**, written in your style and suitable for Medium or Towards Data Science: --- Neural networks are often presented as black boxes, hidden behind high-level libraries and abstract concepts. In this article, we build a neural network classifier from scratch using Excel, with every computation written explicitly. Starting from forward propagation and ending with backpropagation, we show how the model is defined as a simple mathematical function and how its parameters

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