Kaggle (A site to host machine learning competitions with datasets and algorithms)
ASUS Malfunctional Components Prediction (PAKDD 2014 competition)
KDD Cup challenge (Knowledge Discovery and Data Mining)
KDD Cup Datasets introduction
Google AVA Dataset (A Finely Labeled Video Dataset for Human Action Understanding)
Mendeley Datasets (Mendeley Data is a secure cloud-based repository for researchers)
Mozilla's common voice (Mozilla’s Open Source Speech Recognition Model and Voice Dataset)
The Stanford Question Answering Dataset (SQuAD)