Keyu AnHongyu XiangZhijian OuCAT: A CTC-CRF based ASR Toolkit Bridging the Hybrid and the End-to-end Approaches towards Data Efficiency and Low Latency.2020abs/2005.13326CoRRhttps://arxiv.org/abs/2005.13326db/journals/corr/corr2005.html#abs-2005-13326