Function cosineSimilarity

cosineSimilarity(a: number[], b: number[]): number
Computes the cosine similarity between two numeric vectors.
Parameters
- a: number[]
  First vector.
- b: number[]
  Second vector.
Returns number
Cosine similarity in the range [-1, 1]. Returns 0 for zero vectors.
Example
```
import { cosineSimilarity } from 'rageval'

const score = cosineSimilarity([1, 0, 0], [1, 0, 0]) // 1.0
const score2 = cosineSimilarity([1, 0, 0], [0, 1, 0]) // 0.0
```
- Defined in src/utils/cosine-similarity.ts:16