Paraphrase the following text with advanced English words for a scientific paper: Neural network based methods have obtained great progress on a variety of natural language processing tasks. However, in most previous works, the models are learned based on single-task supervised objectives, which often suffer from insufficient training data. In this paper, we use the multi-task learning framework to jointly learn across multiple related tasks.

Ne ural network - based approaches have demonstrated remarkable success in various natural language processing ( N LP ) tasks . However , most previous studies have re lied on single - task super vised object ives , which are often h inder ed by limited training data . In this work , we le verage the multi - task learning framework to concurrent ly learn across multiple related tasks , thereby impro ving the robust ness and general ization of the models . </s>