All articles starting with M

Multi-State Information Sharing and Analysis Center

The Multi-State Information Sharing and Analysis Center (MS-ISAC) is the United States hub for cyber threat information sharing among state, local, tribal, and territorial governments, founded in 2003.

Multi-state model

A multi-state model is a statistical model in which individuals move among a finite number of states, used to analyze disease progression in survival analysis.

Multi-task learning

Multi-task learning (MTL) is a machine learning approach that trains a single model on several related tasks at once over a shared representation, formalized by Richard Caruana in 1993.

Multi-token prediction

Multi-token prediction (MTP) is a language model training objective in which the model predicts several future tokens at each position, introduced by Meta AI in 2024.

Multi-Use Radio Service

The Multi-Use Radio Service (MURS) is an American license-free two-way radio service created by the FCC in 2000, operating on five shared VHF channels with a 2-watt power limit.

Multi-user dungeon

Multi-user dungeon (MUD, also Dimension/Domain): persistent real-time multiplayer text virtual world, created 1978 by Roy Trubshaw and Richard Bartle at Essex University; ancestor of MMORPGs, with codebase families LPMud, DikuMUD, TinyMUD, MOO.

Multi-user MIMO

Multi-user MIMO, or MU-MIMO, is a wireless communication technique where a multi-antenna base station or Wi-Fi access point serves several users at once, boosting throughput from 802.11ac through Wi-Fi 7.

Multi-user quantum capacity

Multi-user quantum capacity describes reliable information transmission through a quantum channel shared by several senders or receivers, where capacity becomes a set of achievable rate tuples.

Multi-valve

Multi-valve describes an internal combustion engine cylinder head with more than two valves per cylinder, most often four, enlarging flow area to raise volumetric efficiency, power, and combustion control.

Multi-verse optimizer

The multi-verse optimizer (MVO) is a population-based metaheuristic for global optimization, introduced by Seyedali Mirjalili and colleagues in 2015, using white holes, black holes, and wormholes as search operators.

Multi-view clustering

Multi-view clustering is an unsupervised machine learning method that groups objects using several feature representations, or views, of the same data, seeking clusterings consistent across views.

Multi-view contrastive learning

Multi-view contrastive learning is a self-supervised machine learning method that pulls different views of the same sample, like two image augmentations, close together in an embedding space.

Multi-view learning

Multi-view learning is a machine learning approach that trains models on several distinct representations, or views, of the same instances, combining them for greater accuracy.

Multi-view reconstruction

Multi-view reconstruction is a computer vision method that recovers 3D geometry from overlapping photographs: structure from motion estimates camera poses, and multi-view stereo computes dense point clouds.

Multi-view subspace clustering

Multi-view subspace clustering (MVSC) is an unsupervised machine learning method that groups data described by several views by learning a shared low-dimensional subspace and clustering samples jointly.

Multi-year ice

Multi-year ice (MYI) is sea ice that has survived at least one summer melt season, making it the oldest and thickest sea ice at 4 to 5 meters.

Oct 21, 2026

Multibacillary leprosy

Multibacillary (MB) leprosy, the severe pole of Hansen disease, defined by WHO as over five skin lesions, nerve involvement, or a positive slit-skin smear; treated with 12 months of rifampicin, clofazimine, and dapsone.

Multibeam bathymetry

Multibeam bathymetry is a sonar mapping method in which a hull-mounted echosounder sends a fan of acoustic beams, yielding hundreds of depth soundings per ping for charting underwater terrain.

Sep 19, 2026

Multibeam Corporation

Multibeam Corporation is a privately held American semiconductor equipment company in Sunnyvale, California, founded in 2010 by David K. Lam, founder of Lam Research, that builds maskless multicolumn electron-beam lithography systems.

Multibeam echosounder

A multibeam echosounder is a sonar instrument that measures water depth and seafloor character by sending many acoustic beams in a fan-shaped swath, returning bathymetry and backscatter.

Oct 22, 2026

Multibeam mask writing

Multibeam mask writing is a photomask fabrication technique using hundreds of thousands of parallel electron beams, pioneered by IMS Nanofabrication and standard for EUV masks since 2016.

Multibody simulation

Multibody simulation (MBS) is a computational engineering method that models the motion and forces of interconnected rigid or flexible bodies, used for vehicle suspensions, aircraft mechanisms, and robot arms.

Multibus

Multibus is a backplane bus architecture for microcomputer systems, introduced by Intel in 1975, that let boards from different manufacturers share one chassis; it became IEEE 796.

MultiCam

MultiCam, or the Operation Enduring Freedom Camouflage Pattern, is a military camouflage developed by Crye Precision. It was adopted in 2010 for US troops in Afghanistan.

Multicarrier code-division multiple access

Multicarrier code-division multiple access, also known as OFDM-CDMA, is a wireless technique combining OFDM with CDMA, spreading each user's data symbol across many subcarriers so multiple users share the spectrum.

Multicarrier DS-CDMA

Multicarrier DS-CDMA (MC-DS-CDMA) is a wireless multiple-access scheme that combines direct-sequence spreading with multicarrier modulation, with time-domain spreading on each subcarrier, introduced by Kondo and Milstein in 1993.

Multicast

Multicast, also called multicasting, is a one-to-many IP communication method in which one packet sent to a group address reaches all its members, contrasting with unicast and broadcast.

Multicast address

A multicast address is an IP destination address that identifies a group of hosts rather than a single interface, defined by Steve Deering in RFC 1112 in 1989.

Multicast DNS

Multicast DNS (mDNS) is a protocol, standardized in RFC 6762 in 2013 by Apple's Stuart Cheshire and Marc Krochmal, that lets hosts on one link resolve names with no DNS server.