A recently granted Google patent and an associated research paper give us deep insight into the inner workings of the modern search engine. The subject of this research has a very dry and technical name: Query Stream Ontology. Let‘s take a look at what this research implies, and start talking about the strategic implications for the SERPs, the knowledge graph, and much more.

Source: https://www.semrush.com/blog/from-keywords-to-query-stream-ontologies/