Digital ethics is a form of ethics that includes systems of values and moral principles of electronic interaction between people, organizations and things.

Digital platform is a group of technologies that are used as a basis for creating a specific and specialized system of digital interaction397.

Digital rights are the rights of individuals as it pertains to computer access and the ability to use, create and publish digital media. Digital rights can also refer to allowed permissions for fair use of digital copyrighted materials. Digital rights are extensions of human rights like freedom of expression and the right to privacy. The extent to which digital rights are recognized varies from country to country, but Internet access is a recognized right in several countries398.

Digital Social Innovation (DSI) is innovation that uses digital technologies to enable or help carry out SI399.

Digital society (Global information society) is a new world knowledge society that exists and interacts, and is also closely integrated into a fundamentally and qualitatively new digital social, economic and cultural ecosystem, in which the free exchange of information and knowledge is implemented using artificial intelligence, augmented and virtual reality, which are additional interfaces for the interaction of people and machines (computers, robots, wearable devices, etc.)400.

Digital transformation is the process of integrating digital technologies into all aspects of activity, requiring fundamental changes in technology, culture, operations and the principles of creating new products and services401.

Digital transformation of the economy is a continuous and dynamically changing process of development, implementation and development of innovations and new technologies in all its sectors, which fundamentally affects the socio-economic and cultural development of the information society.

Digitalization is a new stage in the automation and informatization of economic activity and public administration, the process of transition to digital technologies, which is based not only on the use of information and communication technologies to solve production or management problems, but also on the accumulation and analysis of big data with their help in order to predict situation, optimization of processes and costs, attraction of new contractors, etc.402.

Dimension reduction – decreasing the number of dimensions used to represent a particular feature in a feature vector, typically by converting to an embedding403.

Dimensionality reduction (also dimension reduction) – the process of reducing the number of random variables under consideration by obtaining a set of principal variables. It can be divided into feature selection and feature extraction404.

Dimensionality reduction is a learning technique used when the number of features (or dimensions) in a given dataset is too high. It reduces the number of data inputs to a manageable size while also preserving the data integrity. Often, this technique is used in the preprocessing data stage, such as when autoencoders remove noise from visual data to improve picture quality405.

Dimensions is the maximum number of linearly independent vectors contained in the space406,407.

Directed Acyclic Graph (DAG) in computer science and mathematics, a directed acyclic graph is a finite directed graph with no directed cycles. It consists of finitely many vertices and edges, with each edge directed from one vertex to another, such that there is no way to start at any vertex and follow a consistently directed sequence of edges that eventually loops back to that starting vertex again