How to add properties to entity relationships (e.g., proficiency score between Person and Skill)?

[Amitabitbul]

Discussed in #1555

^{Originally posted by Amitabitbul December 24, 2024}
Hi Guys,

I'm exploring how to model relationships between entities that require additional properties. Specifically, I would like to know if adding attributes to the relationships themselves is possible.

Example use case:

• Entity 1: Person
• Entity 2: Skill
• Desired Relationship Property: proficiency_score (indicating how proficient the person is in that skill)

Is this kind of relationship property modeling possible in GraphRAG? If so, could someone provide guidance on how to implement it?

Some specific questions:

1. Does GraphRAG support properties/attributes on relationships?
2. If yes, what's the recommended way to structure this in the knowledge base?
3. If not, are there any workarounds or alternative approaches?

Any examples or documentation references would be greatly appreciated.

Thank you!