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  2. AI Foundations: From Math to Neural Networks
  3. The Forward Pass
  4. Matrices & Multiple Neurons
Topic Overview

Matrices & Multiple Neurons

Scale single artificial neurons to parallel weight matrices, evaluating multiple criteria on the same input vector using matrix-vector multiplication.

Lessons in this Topic

1

Weight Matrix and Matrix-Vector Multiplication

Stacking multiple neuron weight vectors into a weight matrix to evaluate multiple criteria on the same input vector simultaneously.

2

Bias Vector and Multi-Neuron Linear Step

Independent baseline offsets for each decision criterion bundled into a bias vector to compute the multi-neuron linear step (z = Wx + b).

3

Multi-Neuron Forward Pass

Applying the element-wise Sigmoid function to the linear score vector to compute independent probabilities and parallel classifications.

4

Multi-Neuron Layer Architecture

Grouping parallel neurons into a unified layer, calculating multi-criteria forward passes, and examining the greenlight dilemma for network depth.

5

Matrices and Multiple Neurons In Practice

Manual problem sets covering weight matrix construction, matrix-vector multiplication, bias vectors, and multi-neuron layer forward pass classifications.

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