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Numpy

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Advanced

Embeddings mathematically: what cosine similarity measures

The geometry of embedding space: why you normalise, what dimensionality really buys you, and the anisotropy problem nobody mentions.

Machine Learning Ai Python

9 min readAug 29, 2026vaibhavkothari

Advanced

CNNs from scratch in NumPy: convolution as a matrix multiply

Convolution forward and backward with no framework. The im2col trick that makes it fast, why the backward pass is a convolution too, and a net that trains.

Machine Learning Computer Vision Python

11 min readAug 29, 2026vaibhavkothari

Intermediate

Matrix multiplication in NumPy: @ vs *, and the shape error everyone hits

Why A @ B and A * B give completely different answers, what "shapes not aligned" really means, and the one rule that makes matrix shapes click for good.

Python Machine Learning Numpy

9 min readAug 26, 2026vaibhavkothari

Beginner

What matrices actually do in machine learning

Your dataset is a matrix, a model is a matrix, and training is matrix multiplication repeated. Six operations, drawn out, with the ML job each one does.

Machine Learning Python Numpy

7 min readAug 26, 2026vaibhavkothari

Numpy tutorials & articles · Sythra Articles