Multi-task Learning (MTL)

this is another flag

https://en.wikipedia.org/wiki/Multi-task_learning

https://data-sci.info/2017/06/02/%E5%A4%9A%E7%9B%AE%E6%A8%99%E6%B7%B1%E5%BA%A6%E5%AD%B8%E7%BF%92%E6%A1%86%E6%9E%B6%E4%B9%8B%E6%A6%82%E5%BF%B5%E8%88%87%E6%87%89%E7%94%A8%EF%BC%9Amulti-task-learning-deep-neural-networks/