This book constitutes the refereed proceedings of the 19th International Conference on Information and Software Technologies, ICIST 2013, held in Kaunas, Lithuania, in October 2013. The 34 papers presented were carefully reviewed and selected from 60 submissions. The papers focus on the following topics: information systems, business intelligence, software engineering, and IT applications.

This book constitutes the refereed proceedings of the 18th International Conference on Information and Software Technologies, ICIST 2012, held in Kaunas, Lithuania, in September 2012. The 40 revised full papers presented were carefully reviewed and selected from 81 submissions. The papers are organized in topical sections on artificial intelligence and knowledge engineering, business process modelling, analysis and design, formal analysis and design methods, information and software systems engineering, information technology applications and computer networks, information technology in teaching and learning, ontology, conceptual modelling and databases, requirements engineering and business rules.

This book constitutes the refereed proceedings of the 28th International Conference on Information and Software Technologies, ICIST 2022, held in Kaunas, Lithuania, in October 2022.The 23 full papers and 3 short papers presented were carefully reviewed and selected from 66 submissions. The papers discuss such topics as business intelligence for information and software systems, intelligent methods for data analysis and computer aided software engineering, information technology applications, smart e-learning technologies and applications, language technologies.

This book constitutes the refereed proceedings of the 27th International Conference on Information and Software Technologies, ICIST 2021, held in Kaunas, Lithuania, in October 2021.The 24 full papers and 6 short papers presented were carefully reviewed and selected from 79 submissions. The papers discuss such topics as business intelligence for information and software systems, intelligent methods for data analysis and computer aided software engineering, information technology applications, smart e-learning technologies and applications, language technologies.

This book constitutes the refereed proceedings of the 26th International Conference on Information and Software Technologies, ICIST 2020, held in Kaunas, Lithuania, in October 2020.The 23 full papers and 7 short papers presented were carefully reviewed and selected from 78 submissions. The papers are organized in topical sections on business intelligence for information and software system; software engineering; information technology applications.