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Merge pull request #1003 from danielaskdd/add-graph-search-mode

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Feat: Added minimum degree filter for graph queries
This commit is contained in:
zrguo
2025-03-07 12:37:44 +08:00
committed by GitHub
parent ea898aeda0 7e088ca528
commit 3286a0d57f
17 changed files with 256 additions and 135 deletions
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21
lightrag/api/routers/graph_routes.py
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@@ -3,7 +3,6 @@ This module contains all graph-related routes for the LightRAG API.
"""
from typing import Optional
from fastapi import APIRouter, Depends
from ..utils_api import get_api_key_dependency, get_auth_dependency
@@ -25,23 +24,33 @@ def create_graph_routes(rag, api_key: Optional[str] = None):
return await rag.get_graph_labels()
@router.get("/graphs", dependencies=[Depends(optional_api_key)])
async def get_knowledge_graph(label: str, max_depth: int = 3):
async def get_knowledge_graph(
label: str, max_depth: int = 3, min_degree: int = 0, inclusive: bool = False
):
"""
Retrieve a connected subgraph of nodes where the label includes the specified label.
Maximum number of nodes is constrained by the environment variable `MAX_GRAPH_NODES` (default: 1000).
When reducing the number of nodes, the prioritization criteria are as follows:
1. Label matching nodes take precedence
2. Followed by nodes directly connected to the matching nodes
3. Finally, the degree of the nodes
1. min_degree does not affect nodes directly connected to the matching nodes
2. Label matching nodes take precedence
3. Followed by nodes directly connected to the matching nodes
4. Finally, the degree of the nodes
Maximum number of nodes is limited to env MAX_GRAPH_NODES(default: 1000)
Args:
label (str): Label to get knowledge graph for
max_depth (int, optional): Maximum depth of graph. Defaults to 3.
inclusive_search (bool, optional): If True, search for nodes that include the label. Defaults to False.
min_degree (int, optional): Minimum degree of nodes. Defaults to 0.
Returns:
Dict[str, List[str]]: Knowledge graph for label
"""
return await rag.get_knowledge_graph(node_label=label, max_depth=max_depth)
return await rag.get_knowledge_graph(
node_label=label,
max_depth=max_depth,
inclusive=inclusive,
min_degree=min_degree,
)
return router

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lightrag/api/webui/assets/index-CH-3l4_Z.css Normal file
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lightrag/api/webui/assets/index-DbuMPJAD.js → lightrag/api/webui/assets/index-CJz72b6Q.js
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lightrag/api/webui/assets/index-rP-YlyR1.css
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lightrag/api/webui/index.html
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@@ -5,8 +5,8 @@
<link rel="icon" type="image/svg+xml" href="./logo.png" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Lightrag</title>
<script type="module" crossorigin src="./assets/index-DbuMPJAD.js"></script>
<link rel="stylesheet" crossorigin href="./assets/index-rP-YlyR1.css">
<script type="module" crossorigin src="./assets/index-CJz72b6Q.js"></script>
<link rel="stylesheet" crossorigin href="./assets/index-CH-3l4_Z.css">
</head>
<body>
<div id="root"></div>