Dev.to
5/10/2026

Machine learning uses vectors and
Original: Vectors, Dimensions, and Feature Spaces — The Geometry Behind Machine Learning
Short summary
Machine learning fundamentally represents objects as vectors—ordered sets of numbers where each element describes an aspect. Feature space is the n-dimensional mathematical environment where ML models operate; dimensionality directly reflects description detail. Normalization and scaling are practical necessities: features must be comparable in scale to prevent large-valued features from dominating decision-making.
- •Vectors are ordered sets of numbers representing real-world objects in ML; order matters, swapped elements create different data
- •Feature space is the n-dimensional mathematical environment where models operate; each feature is a coordinate axis
- •Scaling and normalization are critical engineering practices, not mathematical niceties—prevent large-valued features from drowning out informative ones
Generated with AI, which can make mistakes.
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