The knowledge graph, known as the "smart encyclopedia", is actually like a family genealogy?

When we talk about the complex and interesting modern technology concept of knowledge graph, we can cleverly compare it to the family tree of a big family in our daily life.

1. Family tree

Imagine that you have opened an ancient book full of history and stories. It is a family tree that records the reproduction and development of a large family. In this family tree, every family member is recorded in detail, from distant ancestors to every generation to the present. Each name represents an entity, and these entities are closely connected through blood, marriage and other relationships. For example, father, mother, children, uncles, aunts, cousins, etc., they each have their own exclusive positions and entries, which contain rich attribute information such as name, date of birth, occupation and even personal achievements.

2. Analogy of Knowledge Graph

The knowledge graph is like the genealogy of this big family, except that its scope has been expanded to include everything. In the world of the knowledge graph, entities are no longer limited to people. They can be anything with independent meaning, such as movie stars, geographic locations, plant and animal species, and even abstract concepts and events. These entities play a core role in the knowledge graph, and each entity has its own unique identity.

Similarly, the knowledge graph also records the various relationships between entities. Just like the relationship between father and son in a family tree, and the affection between brothers and sisters, the connections between entities in the knowledge graph can be various associations such as "movies directed by a director", "animal habitats", or "manufacturers of products". These relationship networks constitute the context of the knowledge graph.

In addition, each entity in the knowledge graph also has attributes. For example, the entity of a movie star may have attributes such as date of birth, nationality, and representative works, while the entity of a city may contain information such as geographical location, population, and special attractions. These attributes make the entity more three-dimensional and rich.

3. The role of knowledge graph

The main function of a family tree is to pass on family history, clarify the relationship between family members, and allow future generations to understand the roots and growth of the family. Similarly, the important value of knowledge graphs is to help computer systems understand and organize all kinds of knowledge in the world. By building a huge knowledge graph, computers can efficiently retrieve, analyze, and infer complex information, thereby providing users with accurate answers, assisting decision-making, or completing specific tasks.

For example, when we ask in the search engine "What is the latest movie starring Zhang San?", the knowledge graph behind it plays a key role. It connects the entity "Zhang San" with the entity of the movie he participated in through the relationship "starring" and quickly finds the answer.

In summary, the knowledge graph is a digital mapping of the real world, organizing all entities and their relationships and attributes into a large and orderly network. This powerful tool not only greatly improves the efficiency of information processing, but also provides endless help for our study, work and life in the era of intelligence.

Source: Chongqing Radio Science Popularization Experience Center

Audit expert: Yang Yaohui

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