Questions tagged [knowledge-graph]

For questions related to the concept of a knowledge graph, which is a knowledge base represented as a graph that accumulates and conveys knowledge of the real world, where nodes represent entities and edges represent relations between those entities.

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knowledge data base or model for “terms” containment

I'm looking for an open source database/model that can tell me whether there's a relationship of containment between two general "terms", i.e "dresses" is contained within "...
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19 views

Sparse Multi-hot encoding and autoencoders

I'm working with graph neural networks. I have a large graph. Each node has 4 features [A,B,C,D]: 2 categorical with high cardinality: 86k (A) and 148k (B) different features 2 integer with ranges: [...
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674 views

What are the differences between a knowledge base and a knowledge graph?

Throughout my readings, I have seen many authors using interchangeably the two terms to refer to the same thing. However, we all know about Google's first quotation of "knowledge graph" to refer to ...
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46 views

What is meant by the rank of the scoring function here?

I've been reading this paper on Knowledge Graph Reasoning for Explainable Recommendation lately, and I don't understand a particular section: Specifically, the scoring function $f((r,e)|u)$ maps any ...
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70 views

Why can't pure KG embedding methods discover multi-hop relations paths?

According to Reinforcement Knowledge Graph Reasoning for Explainable Recommendation pure KG embedding methods lack the ability to discover multi-hop relational paths. Why is it so?
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75 views

Which reward function works for recommendation systems using knowledge graphs?

I've been reading this paper on recommendation systems using reinforcement learning (RL) and knowledge graphs (KGs). To give some background, the graph has several (finitely many) entities, of which ...
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53 views

What are multi-hop relational paths?

What are multi-hop relational paths in the context of knowledge graphs (KGs)? I tried looking it up online, but didn't find a simple explanation.