update article

This commit is contained in:
Derrick Mwiti
2025-06-10 11:11:32 +03:00
parent 95cdc857df
commit 1e5eaf689e
@@ -22,7 +22,7 @@ As you will see later in the tutorial, Qdrant supports multivectors and thus lat
With token-level vectors, models like ColBERT can match specific query tokens to the most relevant parts of a document, enabling high-accuracy retrieval through Late Interaction.
In late interaction, each document is converted into multiple token-level vectors instead of a single vector. The query is also tokenized and embedded into various vectors. Then, the query and document vectors are matched using a different similarity function: MaxSim.
In late interaction, each document is converted into multiple token-level vectors instead of a single vector. The query is also tokenized and embedded into various vectors. Then, the query and document vectors are matched using a similarity function: MaxSim. You can see how it is calculated [here](https://qdrant.tech/documentation/concepts/vectors/#multivectors).
In traditional retrieval, the query and document are converted into single embeddings, after which similarity is computed. This is an early interaction because the information is compressed before retrieval.
@@ -78,7 +78,7 @@ Let's demonstrate how to effectively use multivectors using [FastEmbed](https://
Install FastEmbed and Qdrant:
```bash
pip install fastembed qdrant-client
pip install qdrant-client[fastembed]>=1.14.2
```
## Step-by-Step: ColBERT + Qdrant Setup
@@ -165,19 +165,18 @@ results = client.query_points(
prefetch=models.Prefetch(
query=dense_query_vector,
using="dense",
limit=100
),
query=colbert_query_vector,
using="colbert",
limit=10,
limit=3,
with_payload=True
)
```
- The dense vector retrieves the top 100 candidates quickly.
- The dense vector retrieves the top candidates quickly.
- The Colbert multivector reranks them using token-level `MaxSim` with fine-grained precision.
- Returns the top 10 results.
- Returns the top 3 results.
## Conclusion
Multivector search is one of the most powerful features of a vector database when used correctly. With this functionality in Qdrant, you can: