categorization

Dataset of over 13,000 images of faces (labeled with names) taken from the internet, including over 1,600 people with multiple pictures

Datasets for training affect recognition and for perception studies

List of datasets useful for deep learning and categorization, including datasets of faces, speech, text, and other images

Dataset of annotated images (including a variety of objects and settings)

Dataset of information derived from and related to one million contemporary songs, with more than 50 variables (including information on track metadata, social networks, and more)

Repository of silhouettes of living organisms and corresponding phylogenic taxonomy

Database of images tagged with a hierarchical labeling structure, including information on image characteristics

Various Twitter dataset collected for academic studies (largely focusing on news)

Dataset of timestamped tweets and corresponding demographic information about authors (i.e., gender and location)

List of lexicons for word-emotion, word-sentiment, and word-color associations derived from a variety of sources (including Amazon, Yelp, Amazon Mechanical Turk, and Twitter)