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95 lines
2.9 KiB
YAML
95 lines
2.9 KiB
YAML
post:
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tags:
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- Flow Services
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summary: Graph Embeddings Query - find similar entities
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description: |
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Query graph embeddings to find similar entities by vector similarity.
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## Graph Embeddings Query Overview
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Find entities semantically similar to a query vector:
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- **Input**: Query embedding vector
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- **Search**: Compare against stored entity embeddings
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- **Output**: Most similar entities (RDF URIs)
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Core component of graph RAG retrieval.
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## Use Cases
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- **Entity discovery**: Find related entities
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- **Concept expansion**: Discover similar concepts
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- **Graph exploration**: Navigate by semantic similarity
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- **RAG retrieval**: Get entities for context
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## Process
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1. Obtain query embedding (via embeddings service)
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2. Query stored entity embeddings
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3. Calculate cosine similarity
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4. Return top N most similar entities
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5. Use entities to retrieve triples/subgraph
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## Similarity Scoring
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Uses cosine similarity between vectors:
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- Results ordered by similarity (most similar first)
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- No explicit similarity scores returned
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- Limit controls result count
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## Entity Format
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Returns RDF values (entities):
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- URI entities: `{v: "https://...", e: true}`
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- These are references to knowledge graph entities
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- Use with triples query to get entity details
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operationId: graphEmbeddingsQueryService
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security:
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- bearerAuth: []
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parameters:
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- name: flow
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in: path
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required: true
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schema:
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type: string
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description: Flow instance ID
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example: my-flow
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requestBody:
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required: true
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content:
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application/json:
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schema:
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$ref: '../../components/schemas/embeddings-query/GraphEmbeddingsQueryRequest.yaml'
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examples:
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basicQuery:
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summary: Find similar entities
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value:
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vectors: [0.023, -0.142, 0.089, 0.234, -0.067, 0.156, 0.201, -0.178]
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limit: 10
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user: alice
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collection: research
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largeQuery:
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summary: Larger result set
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value:
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vectors: [0.1, -0.2, 0.3, -0.4, 0.5]
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limit: 50
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responses:
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'200':
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description: Successful response
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content:
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application/json:
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schema:
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$ref: '../../components/schemas/embeddings-query/GraphEmbeddingsQueryResponse.yaml'
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examples:
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similarEntities:
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summary: Similar entities found
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value:
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entities:
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- {v: "https://example.com/person/alice", e: true}
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- {v: "https://example.com/person/bob", e: true}
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- {v: "https://example.com/concept/quantum-computing", e: true}
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- {v: "https://example.com/concept/machine-learning", e: true}
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'401':
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$ref: '../../components/responses/Unauthorized.yaml'
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'500':
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$ref: '../../components/responses/Error.yaml'
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