---
language:
- en
---

This model was trained with [Sparsembed](https://github.com/raphaelsty/sparsembed). You can find details on how to use it in the [Sparsembed](https://github.com/raphaelsty/sparsembed) repository.

```sh
pip install sparsembed
```

```python
from sparsembed import model, retrieve
from transformers import AutoModelForMaskedLM, AutoTokenizer

device = "cuda" # cpu

batch_size = 10

# List documents to index:
documents = [
 {'id': 0,
  'title': 'Paris',
  'url': 'https://en.wikipedia.org/wiki/Paris',
  'text': 'Paris is the capital and most populous city of France.'},
 {'id': 1,
  'title': 'Paris',
  'url': 'https://en.wikipedia.org/wiki/Paris',
  'text': "Since the 17th century, Paris has been one of Europe's major centres of science, and arts."},
 {'id': 2,
  'title': 'Paris',
  'url': 'https://en.wikipedia.org/wiki/Paris',
  'text': 'The City of Paris is the centre and seat of government of the region and province of Île-de-France.'
}]

model = model.SparsEmbed(
    model=AutoModelForMaskedLM.from_pretrained("raphaelsty/sparsembed-max").to(device),
    tokenizer=AutoTokenizer.from_pretrained("raphaelsty/sparsembed-max"),
    device=device
)

retriever = retrieve.SpladeRetriever(
    key="id", # Key identifier of each document.
    on=["title", "text"], # Fields to search.
    model=model # Splade retriever.
)

retriever = retriever.add(
    documents=documents,
    batch_size=batch_size,
    k_tokens=256, # Number of activated tokens.
)

retriever(
    ["paris", "Toulouse"], # Queries 
    k_tokens=20, # Maximum number of activated tokens.
    k=100, # Number of documents to retrieve.
    batch_size=batch_size
)
```