We will build a 3-layer neural network (Input → Hidden → Output) to solve a simple logic problem: XOR (exclusive OR). XOR is the classic "non-linear" problem that first demonstrated the need for hidden layers.
delta_output = (Predictions - TargetData) * Predictions * (1 - Predictions)
Building a neural network in Microsoft Excel has evolved from complex VBA coding to using powerful modern tools like Python in Excel, LAMBDA functions, and Copilot. These new features allow you to build, train, and visualize models directly within cells. Method 1: Using Python in Excel (Recommended) build neural network with ms excel new
Set up these named ranges (use Formulas → Name Manager): Guide: Build a Neural Network in Microsoft Excel