ProgrammableWeb recently reported about the launch of the new YouTube Data API Version 3.0 (experimental) which includes a New Topics API and Universal Search feature powered by Freebase. This post provides an overview of the Freebase API which allows the YouTube Data API to perform search queries using Freebase IDs instead of keywords.
Image Credit: Freebase
What is Freebase?
Freebase is a graph database that contains a huge repository of structured data. At this time, the Freebase repository includes approximately 20 million Topics or Entities, each are assigned their own unique ID. Freebase data is licensed as Creative Commons and many topics are covered including Music, People, Business, Computers, Internet and more.
The Freebase API
Many of the APIs are read-only web services and do not require Authentication for API calls. The complete list of read-only Freebase APIs is available in the API documentation and includes:
- Search Service -- Find entities by keyword search.
- Topic API -- Get a summary of all the information for an entity.
- Text Service -- Get short textual descriptions for entities.
- Image Service -- Get representative thumbnail images for entities.
The Freebase repository can be queried for keywords, structured data, text and images. Data is returned by the Freebase API in JSON / JSONP format.