[Feature] Improvement of Prompt Configuration for rag_demo Graph Index generation

[Kryst4lDem0ni4s]

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Feature Description (功能描述)

Issue:
File Path: .\incubator-hugegraph-ai\hugegraph-llm\src\hugegraph_llm\resources\demo\config_prompt.yaml
I have tested the current prompt against the following Large Language Models:

API:

• GPT 4o mini
• o3-mini
  Local/Ollama:
• tom_himanen/deepseek-r1-roo-cline-tools:1.5b
• tom_himanen/deepseek-r1-roo-cline-tools:7b
• deepseek-r1:7b
• qwen2.5-coder:1.5b-base
• DEEPSEEk-coder-v2:16b
• deepseek-r1:14b

The results after testing were very poor.
The prompt does not clearly define the format requirements as per Apache Gremlin's documentation and can be made better through further testing and more prompt engineering.

Example of outputs generated by the current prompt file:

 "vertices": [
    {
      "id": "1:person",
      "label": "person",
      "type": "vertex",
      "properties": {
        "name": "Sarah",
        "age": "30",
        "occupation": "attorney"
      }
    },
    {
      "id": "1:webpage",
      "label": "webpage",
      "type": "vertex",
      "properties": {
        "name": "www.sarahsplace.com",
        "url": "None"
      }
    }
  ],
  "edges": [
    {
      "label": "roommate",
      "type": "edge",
      "outV": "1:person",
      "outVLabel": "person",
      "inV": "1:webpage",
      "inVLabel": "webpage",
      "properties": {
        "date": "2010"
      }
    }
  ]
}

Why are these results incorrect (after numerous tests)?
Errors related to missing keywords like "vertices", "edges", "edgelabels", "vertexlabels", "propertykeys", missing IDs, incorrect ID sequencing, missing "source_label" and "target_label", and other syntax errors.

Expected syntax example for reference:

{
  "vertices": [
    {
      "id": "2:lop",
      "label": "software",
      "type": "vertex",
      "properties": {
        "name": "lop",
        "lang": "java",
        "price": 328
      }
    },
    {
      "id": "1:josh",
      "label": "person",
      "type": "vertex",
      "properties": {
        "name": "josh",
        "age": 32,
        "city": "Beijing"
      }
    },
    {
      "id": "1:marko",
      "label": "person",
      "type": "vertex",
      "properties": {
        "name": "marko",
        "age": 29,
        "city": "Beijing"
      }
    },
    {
      "id": "1:peter",
      "label": "person",
      "type": "vertex",
      "properties": {
        "name": "peter",
        "age": 35,
        "city": "Shanghai"
      }
    },
    {
      "id": "1:vadas",
      "label": "person",
      "type": "vertex",
      "properties": {
        "name": "vadas",
        "age": 27,
        "city": "Hongkong"
      }
    },
    {
      "id": "2:ripple",
      "label": "software",
      "type": "vertex",
      "properties": {
        "name": "ripple",
        "lang": "java",
        "price": 199
      }
    }
  ],
  "edges": [
    {
      "id": "S1:josh>2>2>>S2:lop",
      "label": "created",
      "type": "edge",
      "outV": "1:josh",
      "outVLabel": "person",
      "inV": "2:lop",
      "inVLabel": "software",
      "properties": {
        "weight": 0.4,
        "date": "20091111"
      }
    },
    {
      "id": "S1:josh>2>2>>S2:ripple",
      "label": "created",
      "type": "edge",
      "outV": "1:josh",
      "outVLabel": "person",
      "inV": "2:ripple",
      "inVLabel": "software",
      "properties": {
        "weight": 1,
        "date": "20171210"
      }
    },
    {
      "id": "S1:marko>1>1>>S1:josh",
      "label": "knows",
      "type": "edge",
      "outV": "1:marko",
      "outVLabel": "person",
      "inV": "1:josh",
      "inVLabel": "person",
      "properties": {
        "weight": 1,
        "date": "20130220"
      }
    },
    {
      "id": "S1:marko>1>1>>S1:vadas",
      "label": "knows",
      "type": "edge",
      "outV": "1:marko",
      "outVLabel": "person",
      "inV": "1:vadas",
      "inVLabel": "person",
      "properties": {
        "weight": 0.5,
        "date": "20160110"
      }
    },
    {
      "id": "S1:marko>2>2>>S2:lop",
      "label": "created",
      "type": "edge",
      "outV": "1:marko",
      "outVLabel": "person",
      "inV": "2:lop",
      "inVLabel": "software",
      "properties": {
        "weight": 0.4,
        "date": "20171210"
      }
    },
    {
      "id": "S1:peter>2>2>>S2:lop",
      "label": "created",
      "type": "edge",
      "outV": "1:peter",
      "outVLabel": "person",
      "inV": "2:lop",
      "inVLabel": "software",
      "properties": {
        "weight": 0.2,
        "date": "20170324"
      }
    }
  ],
  "schema": {
    "vertexlabels": [
      {
        "id": 1,
        "name": "person",
        "id_strategy": "PRIMARY_KEY",
        "primary_keys": [
          "name"
        ],
        "properties": [
          "name",
          "age",
          "occupation"
        ],
        "nullable_keys": [
          "age",
          "occupation"
        ]
      },
      {
        "id": 2,
        "name": "webpage",
        "id_strategy": "PRIMARY_KEY",
        "primary_keys": [
          "name"
        ],
        "properties": [
          "name",
          "url"
        ],
        "nullable_keys": [
          "url"
        ]
      }
    ],
    "edgelabels": [
      {
        "id": 1,
        "name": "roommate",
        "source_label": "person",
        "target_label": "person",
        "properties": [
          "date"
        ]
      },
      {
        "id": 2,
        "name": "link",
        "source_label": "webpage",
        "target_label": "person",
        "properties": []
      }
    ],
    "propertykeys": [
      {
        "name": "name",
        "data_type": "TEXT",
        "cardinality": "SINGLE"
      },
      {
        "name": "age",
        "data_type": "TEXT",
        "cardinality": "SINGLE"
      },
      {
        "name": "occupation",
        "data_type": "TEXT",
        "cardinality": "SINGLE"
      },
      {
        "name": "url",
        "data_type": "TEXT",
        "cardinality": "SINGLE"
      },
      {
        "name": "date",
        "data_type": "TEXT",
        "cardinality": "SINGLE"
      }
    ]
  }
}

Note:
The improvement of this process can be made in two iterations.

1. Improving the prompts.
2. Using a two step sequence (multi agent system for the complete json generation :
   - First step: generate vertices.
   - Second step: generate edges.
   Why?:
   Reduces the load on a single agent, decreasing generalization, especially while handling alarge context window.
   This is all with the understanding that the schema and property keys are automatically added when the vertices and edges are correctly generated..

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[chiruu12]

@Kryst4lDem0ni4s Hey I have quite a bit experience with prompt engineering let me know if you need any help with the PR