Introducing speech and language processing_超星发现系统 (zhizhen.com)
https://www.zhizhen.com/detail_38502727e7500f26b152e88a9140c5a6b6668e27b73ce6c71921b0a3ea255101ff20232bc5d72713692c120a382342bb269d028f9e34a2d1a1a4ccb46872ea63651517ed574a13fad9d91e2e4853563f?&apistrclassfy=1_18_16