Google Upgrades Search with Knowledge Graph
In a posting on the Google Official Blog, Senior Vice President of Engineering Amit Singhal wrote that, instead of primarily focusing on matching keywords to queries, the enhancement enables the search engine to use an intelligent model that "understands real-world entities and their relationships to one another: things, not strings."
Singhal said the Knowledge Graph "knows about" a variety of things, people, and places, such as landmarks, celebrities, cities, sports teams, buildings, geographical features, movies, celestial objects, works of art, and other subjects. The Graph's current inventory of knowledge, he said, is only the "critical first step" toward creating the next generation of search, which understands the world in ways closer to how people do.
The Graph is more than just calling up data in Wikipedia, the CIA World Factbook, and other supplies of knowledge. It's been populated with more than 500 million knowledge objects, with more than 3.5 billion facts about the relationships between those objects.
The first step in this new kind of search, Google said, is understanding the differences in meaning for a given query. For instance, is the search for "Taj Mahal" about the monument or the musician? The Graph will give choices.
Next, the Graph provides summaries containing key facts that a user might want about a particular subject. The example given by Singhal is Marie Curie. The Graph will deliver birth and death dates, as well as information on her education and scientific discoveries. There's also knowledge about her relationship with other entities, such as her Nobel-prize-winning relatives.
The Graph's ability to determine what is...
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