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Pixtral
Pixtral is a family of open-weight vision-language models released by Mistral AI in 2024: Pixtral 12B under Apache 2.0 and the 124B Pixtral Large, both since discontinued.
PixVerse
PixVerse is a family of proprietary AI video-generation models developed by Aishi Technology, a Singapore- and Beijing-headquartered startup founded in 2023 by former ByteDance and Tencent senior researchers.
Pixxel Space
Pixxel Space, founded in Bengaluru, India, in 2019 by Awais Ahmed and Kshitij Khandelwal, operates a constellation of hyperspectral Earth observation satellites and software for analyzing their data.
Piya Pal
Piya Pal is a signal processing researcher and Professor of Electrical and Computer Engineering at UC San Diego, known for sparse array geometries and winning the 2019 PECASE award.
Piz Daint
Piz Daint was a petascale supercomputer at the Swiss National Supercomputing Centre (CSCS) in Lugano, installed in 2012 as a Cray XC30 with NVIDIA GPUs and ranked third worldwide in 2017 at 19.59 petaflops.
PizzaExpress
PizzaExpress is a British casual dining pizza chain founded by Peter Boizot, who opened Britain's first pizzeria chain in Soho, London, in 1965; it now runs over 360 pizzerias.
PJM Base Residual Auction
The PJM Base Residual Auction is PJM Interconnection's annual capacity auction, held three years ahead, that buys generating capacity and demand response for the delivery year.
PJM Demand Response
PJM Demand Response is a set of voluntary programs that pay electricity customers for reducing their use when PJM requests it during high prices or grid emergencies.
PJM Interconnection
PJM Interconnection is a regional transmission organization that coordinates wholesale electricity across parts of 13 states and DC, serving 67 million people from its founding in 1927.
PK machine gun
The PK machine gun (Пулемёт Калашникова) is a Soviet 7.62×54mmR general-purpose machine gun designed by Mikhail Kalashnikov, adopted in 1961 with the lighter PKM following in 1969.
PK Porthcurno
PK Porthcurno, the Porthcurno Telegraph Museum, is a museum in Cornwall housed in the buildings and wartime tunnels of what was once the largest telegraph station in the British Empire.
PK-4
PK-4 (Plasmakristall-4) is a microgravity complex plasma laboratory on the International Space Station since 2014, a joint European Space Agency and Roscosmos project using trapped charged microparticles to study condensed-matter physics at the single-particle level.
PKCS 12
PKCS 12 (Personal Information Exchange Syntax), also known as PFX, is a standard file format that bundles private keys, certificates, and secrets into one password-protected container.
PKP class EU07
The PKP class EU07 is a Polish four-axle universal electric locomotive built under English Electric license at Pafawag and H. Cegielski from 1965 to 1992.
PKP Intercity
PKP Intercity is the national long-distance passenger rail operator of Poland, part of the state-owned PKP Group, running commercial Express InterCity and EuroNight trains and carrying 89 million passengers in 2025.
PKU-Alignment (SafeRLHF and BeaverTails)
PKU-Alignment is Peking University's open safety-alignment research program, known for the Safe RLHF method and the BeaverTails dataset, which separately ranks responses for helpfulness and harmlessness.
PL 2338 (Brazil)
PL 2338, the Marco Legal da Inteligência Artificial, is a Brazilian bill authored by Senate President Rodrigo Pacheco, regulating artificial intelligence through a risk-based model.
PL-01
The PL-01 was a Polish stealth-styled direct fire support vehicle concept developed by OBRUM with BAE Systems, unveiled as a mock-up in 2013 and abandoned without a prototype by 2015.
PL-12 (霹雳-12)
The PL-12 (霹雳-12), exported as the SD-10, is a Chinese active radar-guided air-to-air missile developed in 1993 as China's AMRAAM equivalent and fielded from the mid-2000s.
PL-15 (霹雳-15)
The PL-15 (霹雳-15, CH-AA-10 Abaddon) is a Chinese long-range air-to-air missile developed for the PLAAF, with a range of about 200 km and service from the late 2010s.
PL/I
PL/I (Programming Language One) is a general-purpose programming language designed by IBM and SHARE in 1963–1964 for commercial, scientific, and systems programming, still used on mainframes.
PL/SQL
PL/SQL (Procedural Language/Structured Query Language) is Oracle's procedural extension to SQL, released in 1991, letting developers declare variables, control program flow, and trap runtime errors.
PLA Navy landing barges
PLA Navy landing barges, known informally as the Shuiqiao class, are Chinese jack-up barges that link with extendable bridges into a movable pier for landing heavy vehicles on beaches.
Place and route
Place and route is the stage of integrated circuit design that assigns locations to logic cells and connects their pins with metal wires under timing, area, and power constraints.
Place of arms
A place of arms (French: place d'armes) is a widened part of the covered way in a fortification, where garrison troops assembled for sorties or its defense.
PLAD (exoskeleton)
The PLAD (Personal Lift Assistive Device, also called the Personal Lift Augmentation Device) is a passive back-support exoskeleton developed by Queen's University and University of Waterloo researchers that reduces back muscle demand during lifting.
Plagiarism detection
Plagiarism detection is the computational comparison of a suspicious document against candidate sources to locate copied or paraphrased text, using fingerprinting methods such as winnowing and evaluated in the PAN series.
Plain bearing
A plain bearing, also known as a journal bearing or bushing, carries a rotating or sliding shaft on a sliding surface, with friction controlled by lubricant film.
Plain old telephone service
Plain old telephone service (POTS) is the traditional analog voice telephone service delivered over twisted-pair copper wires to a local exchange, still used by many homes and businesses.
Plain text
Plain text (raw text) is computer text consisting only of characters from a given encoding, with no formatting or markup; examples include source code and email.