The fourth industrial revolution glossarium: over 1500 of the hottest terms you will use to create the future. Alexander Chesalov

      Artificial neural networks (ANNs) usually simply called neural networks (NNs) are computing systems inspired by the biological neural networks that constitute animal brains. An ANN is based on a collection of connected units or nodes called artificial neurons, which loosely model the neurons in a biological brain. Each connection, like the synapses in a biological brain, can transmit a signal to other neurons. An artificial neuron receives signals then processes them and can signal neurons connected to it. The «signal» at a connection is a real number, and the output of each neuron is computed by some non-linear function of the sum of its inputs. The connections are called edges. Neurons and edges typically have a weight that adjusts as learning proceeds. The weight increases or decreases the strength of the signal at a connection. Neurons may have a threshold such that a signal is sent only if the aggregate signal crosses that threshold. Typically, neurons are aggregated into layers. Different layers may perform different transformations on their inputs. Signals travel from the first layer (the input layer), to the last layer (the output layer), possibly after traversing the layers multiple times76.

      Artificial neuron is a mathematical function conceived as a model of biological neurons, a neural network. The difference between an artificial neuron and a biological neuron is shown in the figure.

      Artificial neurons are the elementary units of an artificial neural network. An artificial neuron receives one or more inputs (representing excitatory postsynaptic potentials and inhibitory postsynaptic potentials on nerve dendrites) and sums them to produce an output signal (or activation, representing the action potential of the neuron that is transmitted down its axon). Typically, each input is weighted separately, and the sum is passed through a non-linear function known as an activation function or transfer function. Transfer functions are usually sigmoid, but they can also take the form of other non-linear functions, piecewise linear functions, or step functions. They are also often monotonically increasing, continuous, differentiable, and bounded77,78.

      Artificial Superintelligence (ASI) is a term referring to the time when the capability of computers will surpass humans. «Artificial intelligence,» which has been much used since the 1970s, refers to the ability of computers to mimic human thought. Artificial superintelligence goes a step beyond and posits a world in which a computer’s cognitive ability is superior to a human.

      ASCII is a character-encoding scheme used by many computers. The ASCII standard uses 7 of the 8 bits in a byte to define the codes for 128 characters. Example: In ASCII, the number «7» is treated as a character and is encoded as: 00010111. Because a byte can have a total of 256 possible values, there are an additional 128 possible characters that can be encoded into a byte, but there is no formal ASCII standard for those additional 128 characters. Most IBM-compatible personal computers do use an IBM «extended» character set that includes international characters, line and box drawing characters, Greek letters, and mathematical symbols. (ASCII stands for American Standard Code for Information Interchange)79.

      Asset are mission-critical systems, physical hardware, applications, support systems, high-impact programs, personnel, equipment, locations, and more80.

      Asset framework is a hierarchy tree depicting the high level assets, sub assets, and individual sensors at the leaf level of the tree81.

      Assist – assessment and evaluation tools for e-service deployment in health, care and ageing – is an assessment and evaluation framework and tool built by Empirica for assessing the economic sustainability of telemedicine and telehealth services. Originally developed and successfully applied for business case development in telemedicine on behalf of the European Space Agency, the ASSIST tool exists also in adaptations for use in integrated eCare and eHealth services82.

      Assisted registration – the process that enables healthcare providers to assist their patients to register for a My Health Record83.

      Assisted Registration Tool (ART) – purpose-built software to enable an HPI-O to assert a patient’s identity and then submit their details to the My Health Record system for registration84.

      Assistive intelligence is AI-based systems that help make decisions or perform actions.

      Assistive technology (AT) is any item, piece of equipment, software program, or product system that is used to increase, maintain, or improve the functional capabilities of persons with disabilities85.

      Association for the Advancement of Artificial Intelligence (AAAI) — an international, nonprofit, scientific society devoted to promote research in, and responsible use of, artificial intelligence. AAAI also aims to increase public understanding of artificial intelligence (AI), improve the teaching and training of AI practitioners, and provide guidance for research planners and funders concerning the importance and potential of current AI developments and future directions.

      Assumed

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