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Expert iteration

Expert iteration (ExIt) is a reinforcement learning algorithm, introduced by Anthony, Tian, and Barber at University College London in 2017, where tree search guides a neural network.

Expert parallelism

Expert parallelism is a parallelism strategy for mixture-of-experts models that places each expert's feedforward layer on a different accelerator, scaling models without extra compute per token.

Expert pruning

Expert pruning is a model-compression technique that permanently removes selected experts from a mixture-of-experts model to reduce memory and serving cost, with calibration-based methods choosing which experts to keep.

Expert system

An expert system is a computer program that emulates a human specialist's decision-making in a narrow domain by reasoning over explicitly encoded if–then rules rather than learning from data.

Explainable artificial intelligence

Explainable artificial intelligence (XAI), also called interpretable AI, comprises methods for making machine-learning models understandable, either by design or through post-hoc explanations of black-box systems.

Expleo

Expleo is a global engineering, technology, and consulting service provider headquartered in Montigny-le-Bretonneux, France, with about 17,000 experts in 29 countries; it was spun off from Assystem in 2017 and renamed Expleo in 2019.

Explicit congestion notification

Explicit congestion notification (ECN) is an extension to IP and TCP in which a congested router marks packets instead of dropping them, standardized in RFC 3168 in 2001.

Explicit force control

Explicit force control, also called direct force control, is a robot control strategy in which a feedback loop acts directly on measured contact forces to hold a desired force.

Explicit model predictive control

Explicit model predictive control, or explicit MPC, precomputes the optimal control law offline as a piecewise affine function of the state, replacing online optimization with a fast region lookup.

Exploding-bridgewire detonator

An exploding-bridgewire detonator, or EBW, is an initiator that fires secondary explosive with an electrical pulse, invented at Los Alamos for the Fat Man bomb.

Exploit (computer security)

An exploit, also known as a security exploit, is software or a technique that takes advantage of a vulnerability in a computer system to bypass its security policy.

ExploitGym

ExploitGym is a publicly released benchmark of 898 real-world software exploitation tasks, built by academic and industry researchers to test whether AI agents can turn known vulnerabilities into working attacks.

Explora I

Explora I is a luxury cruise ship operated by Explora Journeys, the luxury brand of MSC Group, delivered by Fincantieri in 2023 as the first of six planned ships.

Exploration in reinforcement learning

Exploration in reinforcement learning is the problem of how a trial-and-error agent balances trying new actions against repeating ones that already look good, especially in sparse-reward settings.

Exploration of Jupiter

The exploration of Jupiter is the study of the planet and its moons by spacecraft, beginning with Pioneer 10's 1973 flyby and continuing today with NASA's Juno orbiter.

Exploration of Mars

Exploration of Mars, also called Martian exploration, is the robotic and, prospectively, human investigation of the planet by spacecraft, led by NASA since the Mariner flybys of the 1960s.

Exploration of the Moon

The exploration of the Moon, also known as Moon exploration, is the study of Earth's natural satellite by robotic spacecraft and crewed missions, ongoing since 1959.

Exploratorium

The Exploratorium is a museum of science, art, and human perception in San Francisco, founded by physicist Frank Oppenheimer in 1969 and known for hands-on, interactive exhibits.

Exploratory testing

Exploratory testing is a software testing approach where testers design, execute, and evaluate tests simultaneously, letting each result shape the next test instead of following a script.

Explorer (Rocket Lab)

Explorer is Rocket Lab's configurable interplanetary spacecraft platform for missions to Mars, Venus, the Moon, and deep space, with flight heritage from NASA's 2022 CAPSTONE lunar mission.

Explorer 1

Explorer 1 was the first successful United States satellite, launched January 31, 1958 from Cape Canaveral; its cosmic ray instrument led to the discovery of the Van Allen radiation belts.

Explorer of the Seas

Explorer of the Seas is a Voyager-class cruise ship built for Royal Caribbean International in 2000, among the largest passenger ships of its time, with an onboard oceanographic laboratory.

Explorer Pipeline

Explorer Pipeline is an American common-carrier pipeline transporting gasoline, diesel, and jet fuel from Gulf Coast refineries to Midwest markets, formed in 1967 and headquartered in Tulsa.

Explorer program

The Explorer program is NASA's longest-running series of scientific spacecraft, launched with Explorer 1 in 1958; more than 70 missions have flown under its name.

Explorers Program

The Explorers Program, also called Project Explorer, is a NASA series of small, low-cost scientific spacecraft begun with Explorer 1, the first successful American satellite, in 1958.

Explosion

An explosion is a sudden expansion of gas that rapidly releases energy, creating a damaging pressure wave, as in dust clouds, TNT charges, volcanic blasts, and nuclear detonations.

Explosive

An explosive is a substance or mixture that produces an explosion when initiated, releasing gas and heat so rapidly that expanding products exert sudden pressure on surroundings.

Explosive belt

An explosive belt is an improvised explosive device strapped to a suicide attacker's body under clothing, first perfected by the Tamil Tigers, whose 1991 attack killed Rajiv Gandhi.

Explosive lens

An explosive lens is an arrangement of explosives with different detonation velocities that shapes a detonation wave into a plane or converging front, developed at Los Alamos for implosion nuclear weapons.

Explosive welding

Explosive welding is a solid-state joining process in which controlled detonation accelerates one plate against another, bonding them without melting; it is mainly used to clad steel.