Train a basic engine

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Engines are used for all retrieval and ranking in Shaped. Simple engines can be used for semantic search, while complex engines may do behaviour-based retrieval.

Engines are configured declaratively with YAML or JSON.

Here is an example of a minimal semantic search engine:

version: v2

name: movielens_movie_recommendation_v2

data: 
  # specify a Shaped table to represent the items in your catalog
  item_dataset: 
    name: movies

  # define how to index your data
  index:
    # specify a model to use to generate embeddings
    embeddings:
        - name: text_embedding
          encoder:
              type: hugging_face
              model_name: sentence-transformers/all-MiniLM-L6-v2
              item_fields:
                - movie_title