Vector Atlas search Embedded documents

MongoDB Atlas Atlas Search
1

i have a collection with documents structured this way

{
  "_id": {
    "$oid": "65a84ffc0000000000000000"
  },
  "lyrics": [
    {
      "line":  "hello",
      "embedding": [ ]
    }
  ]
}

I want to search by line, I created the following Atlas Search index for this collection.

{
  "mappings": {
    "dynamic": false,
    "fields": {
      "lyrics": {
        "dynamic": false,
        "fields": {
          "embedding": {
            "dimensions": 1536,
            "similarity": "euclidean",
            "type": "knnVector"
          }
        },
        "type": "document"
      }
    }
  }
}

the status of this index been like this for a while, am I doing something wrong here

image
image1203×191 7.68 KB

2

Hi Kata,

Thank you for submitting your question. Unfortunately we don’t presently support searching against nested vectors. We have this on our roadmap, and I will make sure to update this thread when it’s supported.

If there is any metadata in the parent document that you want to filter on, you can always use $lookup and $match to join against the parent document using a field in the child document, and then post-filtering on any metadata present within the parent. Happy to provide an example of this if that’s what you are looking for.

3

Hi Henry,
Just wondering if you might have an estimate for when this feature (searching against nested vectors) will become available?
Thanks Allen

1 Like
4

HI @Allen_Lee,

Hopefully towards the end of this year we will support some form of query patterns against a nested data model, though the design discussions for this are still in flight. I will update on this thread when we have a clearer idea of when this will land, as we know it is something we need to provide.

1 Like