If you have followed Neo4j news for the last few years, you have probably heard a lot about knowledge graphs. But it is not always clear what they are. Unfortunately, there is no universal definition of a knowledge graph, but let's try to understand which concepts are hidden behind these two words.
Attempting a definition of knowledge graphs
Modern applications produce petabytes of data every day. As an example, during the year 2019, every minute, the number of Google searches has been estimated to be more than 4.4 billion. During the same amount of time, 180 billion emails, and more than 500,000 tweets are sent, while the number of videos watched on YouTube is about 4.5 billion. Organizing this data and transforming it into knowledge is a real challenge.
Knowledge graphs try to address this challenge by storing the following in the same data structure:
- Entities related to a specific field, such as users or products
- Relationships between entities, for instance,...
