Prophet is a forecasting procedure implemented in R and Python. It is fast and provides completely automated forecasts that can be tuned by hand by data scientists and analysts. ... Prophet is open source software released by Facebook's Core Data Science team. It is available for download on CRAN and PyPI.

What is YHAT in Facebook Prophet?

From Quick Start: The predict method will assign each row in future a predicted value which it names yhat . If you pass in historical dates, it will provide an in-sample fit.

Is Facebook a good Prophet?

The software is good for "the business forecast tasks we have encountered at Facebook" and that, according to the site, means hourly, daily or weekly observations with strong multiple seasonalities. In addition, Prophet is designed to deal with holidays known in advance, missing observations and large outliers.