This book constitutes the thoroughly refereed proceedings of the National Conference of Theoretical Computer Science, NCTCS 2018, held in Shanghai, China, in October 2018. The 11 full papers presented were carefully reviewed and selected from 31 submissions. They present relevant trends of current research in the area of algorithms and complexity, software theory and method, data science and machine learning theory.

This book constitutes the thoroughly refereed proceedings of the National Conference of Theoretical Computer Science, NCTCS 2017, held in Wuhan, Hubei, China, in October 2017. The 25 full papers presented were carefully reviewed and selected from 84 submissions. They present relevant trends of current research in the area of algorithms and complexity, software theory and method, data science and machine learning theory.

This book constitutes the thoroughly refereed proceedings of the 38th National Conference of Theoretical Computer Science, NCTCS 2020, held in Nanning, China, in November 2020. The 13 full papers presented were carefully reviewed and selected from 28 submissions. They present recent research in the areas of algorithms and complexity, matrix computation; deep learning; network communication and security.

This book constitutes the thoroughly refereed proceedings of the National Conference of Theoretical Computer Science, NCTCS 2019, held in Lanzhou, China, in August 2019. The 11 full papers presented were carefully reviewed and selected from 28 submissions. They present relevant trends of current research in the area of algorithms and complexity, data science and machine learning theory, and computational model.