Hybrid Search resulting in GraphQL error

Support
1

On doing a Hybrid Search by providing my own vectors, the query seems to fail. I’m using the python client to do the following query:

query = "jobs in research"
search_vector = model.encode("query: " + query)
response = (
    client.query.get(
        "Content",
        ["source_content"])
        .with_hybrid(query=query, alpha=0.75, vector=search_vector, fusion_type=HybridFusion.RELATIVE_SCORE)
        .with_additional("score")
        .with_autocut(3)
        .do()   
    )

The error response I get is as follows:

{'errors': [{'locations': [{'column': 92, 'line': 1}],
   'message': 'Syntax Error GraphQL request (1:92) Unexpected ...\n\n1: {Get{Title(hybrid:{query: "jobs in research", vector: [ 0.01308592 -0.04184871  0.03915516 ... -0.06351458  0.01686241\n                                                                                              ^\n2:   0.03818709], alpha: 0.75, fusionType: relativeScoreFusion}autocut: 3){source_title _additional {score }}}}\n',
   'path': None}]}

Doing another query like this results in no errors and the expected results.

response = (
    client.query.get(
        "Content",
        ["source_content", "hasCategory { ... on KnowledgeSource { uri } }"])
        .with_near_vector({'vector': search_vector})
        .with_autocut(1)
        .do()
    )

What is the reason behind this? Is there anyway I can look at the graphql query being sent by the python client?

2

Hi @alt-glitch

instead of calling .do() you can always call .build() to generate the resulting graphql query.

This might be a python client issue while generating the Graphql.

Let me know if this helps so we can dig further into this.

Thanks!

3

Hey!
Thanks for the help. The resulting GraphQL query is:

{
  Get {
    Title(
      hybrid: {
        query: "jobs in research",
        vector: [0.01308592, -0.04184871, 0.03915516, ..., -0.06351458, 0.01686241, 0.03818709],
        alpha: 0.75,
        fusionType: relativeScoreFusion
      },
      autocut: 3
    ) {
      source_title
      _additional {
        score
      }
    }
  }
}

And the full error i get is:

{
  "errors": [
    {
      "locations": [
        {
          "column": 55,
          "line": 6
        }
      ],
      "message": "Syntax Error GraphQL request (6:55) Unexpected ...\n\n5:         query: \"jobs in research\",\n6:         vector: [0.01308592, -0.04184871, 0.03915516, ..., -0.06351458, 0.01686241, 0.03818709],\n                                                         ^\n7:         alpha: 0.75,\n",
      "path": null
    }
  ]
}

What else can I do to debug/find the issue? My search vector is of size 1024, but that doesn’t seem to be a problem when I use near_vector

4

I was able to fix it by converting the array from model.encode() to a list and then doing the query as follows:

query = "jobs in research"
search_vector = model.encode("query: " + query)

response = (
    client.query.get(
        "Title",
        ["source_title"])
        .with_hybrid(query=query, alpha=0.75, vector=list(search_vector), fusion_type=HybridFusion.RELATIVE_SCORE)
        .with_additional("score")
        .with_autocut(3)
        .do()
    )

I am not sure why the array from the SentenceTransformer model here doesn’t work as it is though.