Sunday, August 8, 2010

Metaweb: Freebase, an Entity Graph of Open Data

Freebase is a service that helps you build your website around entities and not just words: it is an open, shared database of the world's knowledge of more than 12 million entities: an online collection of structured data harvested from many sources, including individual 'wiki' contributions. Freebase aims to create a global resource which allows people (and machines) to access common information more effectively. It was developed by the American software company Metaweb and has been running publicly since March 2007. Metaweb was acquired by Google in a private sale announced on July 16th 2010.


An entity is a single person, thing or concept that exists in the world. In Freebase terms, each entity is represented by a Topic node in the graph, and has a unique Id(entity).

Examples of entities:

Things which are not entities:
  • things expressed by adjectives or verbs, eg. "funny" or "speak"
  • disparate groups or collections, eg. "people with blue eyes"
  • higher-order ideas about things, eg. "history of Cambodia"

If you choose the "Watch on YouTube" option, press the CC button on the right-hand 
bottom corner and choose "Transcribir audio" to read the English subtitling

No copyright infringement intended. For educational, non-commercial purposes only.

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