# cosine_similarity

> **Function** in `langchain_redis`

📖 [View in docs](https://reference.langchain.com/python/langchain-redis/vectorstores/cosine_similarity)

Row-wise cosine similarity between two equal-width matrices.

## Signature

```python
cosine_similarity(
    X: Matrix,
    Y: Matrix,
) -> np.ndarray
```

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[View source on GitHub](https://github.com/langchain-ai/langchain-redis/blob/ae0db7690f041437d662d0810523cda4cb7f5174/libs/redis/langchain_redis/vectorstores.py#L29)