Ontologies and Thesauruses: Models, Tools, Applications . Textbook” by Dobrova B . In. , Ivanova V. In. , Lukashevich N. In. and Solovyov V. D. It is a unique publication that immerses the reader in the world of semantic technologies and their application in various fields of knowledge. This manual will become an indispensable assistant for both undergraduate and graduate students, and for practitioners working in the field of information technology, library science, lexicography and related disciplines . The book covers a wide range of topics related to ontologies and thesauruses, ranging from basics to modern tools and applications. The authors consider in detail what ontologies and thesauruses are, how they are formed and how they can be used to organize and structure information. This makes the book especially relevant in the era of big data, when the ability to work with information becomes a key skill. Each chapter of the manual is imbued with practical examples and cases that not only illustrate the theoretical aspects, but also show how to apply the knowledge gained in practice. The reader will see how ontologies help in the development of knowledge management systems, how they can be used to improve the search for information and create more intelligent systems. This makes the book not only a tutorial, but also a practical guide for those who want to introduce semantic technologies into their work. The manual will be of particular interest to students and teachers studying information technology, librarianship and lexicography. It will also attract the attention of researchers working in the field of artificial intelligence and natural language processing. The topics raised in the book are relevant for anyone interested in modern approaches to the organization and presentation of knowledge, as well as for those who seek to improve the quality of information search and processing. The style of the authors is clear and accessible, which allows even complex concepts to be explained in simple and understandable language. They use many illustrations and diagrams, which makes the material more visual and easy to perceive. In addition, the book presents various tools and platforms that can be used to create and work with ontologies and thesauruses, which adds practical value to the publication. Ontologies and Thesauruses: Models, Tools, Applications . The textbook is not just a textbook, but a whole encyclopedia of knowledge that will help readers understand the complex issues of semantic technologies. It will be an excellent addition to the library of any specialist seeking to be one step ahead in the rapidly changing world of information. If you are looking for a high-quality and up-to-date guide to ontologies and thesauruses, this edition is your ideal choice. Do not miss the opportunity to deepen your knowledge and expand your horizons in the field of semantic technologies with the help of this book. It will become your reliable companion in the world of information, where proper understanding and organization of data play a key role in success.