Information for pairs0019: Old Faithful geyser data Old Faithful is a hydrothermal geyser in Yellowstone National Park in the state of Wyoming, USA. Each observation corresponds to a single erruption. x: duration of erruption in minutes y: time to the next erruption in minutes Source http://research.microsoft.com/en-us/um/people/cmbishop/PRML/webdatasets/datasets.htm ground truth: x-->y