Design Center is an organizational unit (the entire organization or its subdivision) that performs a full range or part of the work on creating products up to the stage of its mass production, and also has the necessary personnel, equipment and technologies for this386.

Developmental robotics (DevRob) (also epigenetic robotics) is a scientific field which aims at studying the developmental mechanisms, architectures, and constraints that allow lifelong and open-ended learning of new skills and new knowledge in embodied machines387.

Device is a category of hardware that can run a TensorFlow session, including CPUs, GPUs, and TPUs388.

DevOps (development & operations) is a set of practices, tools, and culture philosophies that automate and integrate the processes of software development teams and IT teams. DevOps emphasizes team empowerment, collaboration and collaboration, and technology automation. The term DevOps is also understood as a special approach to organizing development teams. Its essence is that developers, testers and administrators work in a single thread – they are not each responsible for their own stage, but work together on the release of the product and try to automate the tasks of their departments so that the code moves between stages without delay. In DevOps, responsibility for the result is distributed among the entire team389,390.

Diagnosis concerned with the development of algorithms and techniques that are able to determine whether the behaviour of a system is correct. If the system is not functioning correctly, the algorithm should be able to determine, as accurately as possible, which part of the system is failing, and which kind of fault it is facing. The computation is based on observations, which provide information on the current behaviour391.

Dialogflow API.AI is a platform that allows users to build brand-unique, natural language interactions for bots, applications, services, and devices. It features a Natural Language Understanding Tools to design unique conversation scenarios, design corresponding actions and analyze interactions with users392.

Dialogue system (also conversational agent (CA)) is a computer system intended to converse with a human with a coherent structure. Dialogue systems have employed text, speech, graphics, haptics, gestures, and other modes for communication on both the input and output channel393.

Dice coefficient is a measure to compare the similarity of two segmentations, e.g., by expert and by machine. It is the ratio of twice the number of common pixels to the sum of all pixels in both sets.

Dictation – speech (voice) text input.

Dictation system is a system for speech text input.

Digital Body Language encompasses all the digital activities performed by an individual. Every time a person performs a Google search, visits a web page, opens a newsletter or downloads a guide, they contribute to their digital body language. Digital body language is used in building marketing automation394.

Digital divide is a concept that has become especially widespread in the last decade due to the increased importance of introducing new digital technologies in society and overcoming existing differences in the field of information and knowledge that hinder the development of basic economic and social infrastructures, in particular the energy sector, telecommunications and education395.

Digital educational environment is an open set of information systems designed to support various tasks of the educational process. The word «open» means the ability and the right to use different information systems as part of the DSP, replace them or add new ones at your own discretion