langchain/docs/extras/integrations/providers/scann.mdx

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# ScaNN
>[Google ScaNN](https://github.com/google-research/google-research/tree/master/scann)
> (Scalable Nearest Neighbors) is a python package.
>
>`ScaNN` is a method for efficient vector similarity search at scale.
>ScaNN includes search space pruning and quantization for Maximum Inner
> Product Search and also supports other distance functions such as
> Euclidean distance. The implementation is optimized for x86 processors
> with AVX2 support. See its [Google Research github](https://github.com/google-research/google-research/tree/master/scann)
> for more details.
## Installation and Setup
We need to install `scann` python package.
```bash
pip install scann
```
## Vector Store
See a [usage example](/docs/integrations/vectorstores/scann).
```python
from langchain.vectorstores import ScaNN
```