# Function kldivergence Calculate the Kullback-Leibler (KL) divergence between two distributions ## Syntax ```js math.kldivergence(x, y) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `q` | Array | Matrix | First vector `p` | Array | Matrix | Second vector ### Returns Type | Description ---- | ----------- number | Returns distance between q and p ## Examples ```js math.kldivergence([0.7,0.5,0.4], [0.2,0.9,0.5]) //returns 0.24376698773121153 ```