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Retrievers & Vectorizers

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Overview​

This section includes reference guides for retriever & vectorizer modules. As their names suggest, XXX2vec modules are configured to produce a vector for each object.

  • text2vec converts text data
  • img2vec converts image data
  • multi2vec converts image or text data (into the same embedding space)
  • ref2vec converts cross-reference data (from within Weaviate)

Vectorization with text2vec-* modules​

You can use text2vec modules with Weaviate to generate vector data each object. To produce the string to be vectorized, Weaviate follows schema configuration for the relevant class.

Unless specified otherwise, the default behavior is to:

  • Only vectorize properties that use string or text data types
  • Sort properties in alphabetical (a-z) order before concatenating values
  • Prepend the class name to the value
  • Join properties with spaces, and
  • Convert the produced string to lowercase