Note: The following news was released about 10 days ago.
Massive amounts of Flickr metadata is now available for researchers to use.
From Yahoo (via Tumblr):
On Flickr, photos, their metadata, their social ecosystem, and the pixels themselves make for a vibrant environment for answering many research questions at scale. However, scientific efforts outside of industry have relied on various sized efforts of one-off datasets for research. At Flickr and at Yahoo Labs, we set out to provide something more substantial for researchers around the globe.
Today, we are announcing the Flickr Creative Commons dataset as part of Yahoo Webscope’s datasets for researchers. The dataset, we believe, is one of the largest public multimedia datasets that has ever been released—99.3 million images and 0.7 million videos, all from Flickr and all under Creative Commons licensing.
The dataset (about 12GB) consists of a photo_id, a jpeg url or video url, and some corresponding metadata such as the title, description, title, camera type, title, and tags. Plus about 49 million of the photos are geotagged! What’s not there, like comments, favorites, and social network data, can be queried from the Flickr API.
The dataset can host a variety of research studies and challenges. One of the first challenges we are issuing is the MediaEval Placing Task, where the task is to build a system capable of accurately predicting where in the world the photos and videos were taken without using the longitude and latitude coordinates. This is just the start. We plan to create new challenges through expansion packs that will widen the scope of the dataset with new tasks like object localization, concept detection, and social semantics.
Read the Complete Tumblr Post
Includes info on how to access the dataset.