config.json

{
  "types": {
    "query_0_IDF": "sentence_transformers.sparse_encoder.models.IDF",
    "document_0_IDF": "sentence_transformers.sparse_encoder.models.IDF"
  },
  "structure": {
    "query": [
      "query_0_IDF"
    ],
    "document": [
      "document_0_IDF"
    ]
  },
  "parameters": {
    "allow_empty_key": true
  }
}