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h2oGPTe

h2oGPTe is an AI-powered search assistant for your internal teams to answer questions gleaned from large volumes of documents, websites and workplace content.

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Overview

This node provides an interface to encode text chunks using a specified embedding model for semantic searching purposes. It is designed to convert textual data into vector embeddings that can be used in semantic search systems, enabling more meaningful and context-aware search results beyond simple keyword matching.

Typical use cases include:

  • Preparing document chunks or text snippets for semantic similarity searches.
  • Enhancing search relevance in knowledge bases, FAQs, or document repositories.
  • Supporting AI-powered search assistants by encoding user queries and documents into comparable vector spaces.

For example, you might input multiple paragraphs of text (chunks) and receive their corresponding embeddings, which can then be stored or compared against query embeddings to find semantically similar content.

Properties

Name Meaning
Model ID ID of the embedding model that will be used to encode the text chunks.
Chunks The text chunks (strings) to be encoded into embeddings for semantic retrieval purposes.

Output

The output contains a JSON field with the response from the embedding model API. This typically includes the vector embeddings corresponding to each input chunk. These embeddings are numerical arrays representing the semantic meaning of the input texts.

If the node supports binary data output, it would represent encoded vectors or related binary payloads, but based on the provided code and properties, the output is JSON-based embeddings.

Dependencies

  • Requires access to an external embedding model API endpoint.
  • Needs an API key credential configured in n8n to authenticate requests to the embedding service.
  • The base URL for the API is constructed from credentials and used to send POST requests to the /embedding_models/{model_id}/encode_chunks_for_retrieval endpoint.

Troubleshooting

  • Invalid Model ID: If the provided model ID does not exist or is incorrect, the API may return an error. Verify the model ID is correct and available.
  • Empty or Malformed Chunks: Ensure the "Chunks" property contains valid text data. Empty strings or improperly formatted input may cause errors or empty embeddings.
  • Authentication Errors: Missing or invalid API key credentials will prevent successful API calls. Confirm that the API key is correctly set up in n8n.
  • Timeouts or Network Issues: Large inputs or network problems may cause request timeouts. Adjust timeout settings or check network connectivity if issues arise.

Links and References

  • Refer to your embedding model provider's API documentation for details on supported models and encoding formats.
  • For semantic search concepts and embedding usage, see resources on vector search and natural language processing embeddings.

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