Frank Zhang 0001Yongqiang Wang 0005Xiaohui Zhang 0007Chunxi LiuYatharth SarafGeoffrey ZweigFast, Simpler and More Accurate Hybrid ASR Systems Using Wordpieces.2020abs/2005.09150CoRRhttps://arxiv.org/abs/2005.09150db/journals/corr/corr2005.html#abs-2005-09150