MathematicsLesson 48Free preview
Vectors
This lesson is part of A.I. · All levels
Summary
A vector is a sequential list of numbers that represents a point or feature in multidimensional space. The two basic vector operations are the addition of elements per element and the product of the scale (dot product). Scalar products are very important because they are used by neurons to measure the fit of input to its weight.
Key points
- Vectors are a set of sequential numbers with a fixed length.
- The product of the scalar is the sum of the times the pair of elements is in position.
- The product of zero points denote two orthogonal vectors.
- Vector length/magnitude = square root of the sum of the squares of the elements.
- Each instance of data in ML is represented as a feature vector.
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