All articles starting with O
9,097 articles
Online game
Online game: a video game played over a network, also called networked or multiplayer gaming. Spans postal and telegraph chess, BBS and MUD games, CompuServe's MegaWars (1982), MMORPGs like World of Warcraft, Xbox Live (2002), and mobile titles, built on client-server or peer-to-peer architectures.
Online interview
An online interview, also called an e-interview, is a research interview conducted over the internet by text, voice, or video, either in real time or asynchronously.
Online machine learning
Online machine learning, also called on-line learning, is a family of machine learning methods that builds predictive models by processing data one instance at a time in arrival order.
Online magazine
An online magazine (webzine, e-zine) is a magazine published on the internet via website, app, download, or email. Early examples include FSF.net (1984) and Quanta (1989); formats range from PDF replicas to interactive apps.
Online marketplace
An online marketplace, also called an online e-commerce marketplace, is a website where third-party sellers post listings and buyers buy them, with the platform processing payments as an intermediary.
Online newspaper
Online newspaper: a newspaper published on the internet, either as a print title's digital edition or online-only. First appeared January 1994 (Palo Alto Weekly); by 2026 social media overtook news websites as the main online news access route.
Online poker
Online poker: real-money poker played on internet sites earning rake. Began with Planet Poker in 1998; boomed after Moneymaker's 2003 WSOP win; ~6 million players paid $3.61B rake in 2010; skill dominates after ~1,500 hands.
Online predator
Online predator: an adult who uses chat, social media, and messaging to groom children for sexual exploitation, also called online grooming or cybergrooming; prevalence 8-19%, staged manipulative tactics, ML detection, and grooming-specific criminal laws.
Online Rape Academy (CNN investigation)
Online Rape Academy: name for the ecosystem exposed in CNN's 26 March 2026 As Equals investigation ("Exposing a global 'online rape academy'"), covering Telegram group Zzz, Motherless.com, and the misreported 62 million visits figure.
Online Safety Amendment (Social Media Minimum Age) Act 2024
The Online Safety Amendment (Social Media Minimum Age) Act 2024 is an Australian federal law establishing a minimum-age framework for accounts on specified social media services. It amended the Online Safety Act.
Online self-calibration of manipulators
Online self-calibration of manipulators is the continuous or periodic estimation of a robot arm's kinematic parameter errors during operation, using onboard or in-cell sensors rather than external metrology.
Online shaming
Online shaming is public social policing of perceived transgressions via social media, also called cancel culture or call-out culture. Key facts: no accepted definition, viral pile-ons, documented job loss and depression, five ethical constraints, and platform regulation debates.
Online shopping
Online shopping, also called e-tail or e-shopping, is buying goods or services over the internet and receiving them by delivery or pickup rather than in a store.
Online trajectory generation
Online trajectory generation (OTG) is the real-time computation of robot motion trajectories within every control cycle, typically one millisecond, so motion reacts instantly to new targets and sensor events.
Online transaction processing
Online transaction processing (OLTP) is a class of data processing that executes business transactions, such as payments, reservations, and order entries, in real time, confirming each one immediately.
Online video platform
An online video platform, also called a video hosting or video-sharing platform, is a software service covering video upload, transcoding, adaptive streaming delivery, playback, and analytics.
Online vs. offline preference learning
Online vs. offline preference learning is the distinction in AI post-training between updating on fresh rollouts from the current policy, like PPO-based RLHF, and fixed preference datasets, like DPO.
Only a Fiddler
Only a Fiddler (Kun en Spillemand) is a novel by the Danish writer Hans Christian Andersen, published in 1837, about a poor tailor's son whose musical talent is never supported.
Only a Fool Would Say That
"Only a Fool Would Say That" is a 1972 Steely Dan song from Can't Buy a Thrill, written by Becker and Fagen, mocking utopian idealism and often read as a jab at John Lennon's Imagine, though unconfirmed.
Only Boo! (แค่ที่แกง)
Only Boo! (แค่ที่แกง, Khae Thi Kaeng) is a 2024 GMMTV Thai BL romantic comedy, 12 episodes on GMM 25 from 31 March to 23 June 2024, adapted from peachhplease's web novel, starring Sea Dechchart Tasilp as Kang and Keen Suvijak Piyanopharoj as Moo, an idol trainee whose no-dating contract threatens his romance.
Only Built 4 Cuban Linx...
Only Built 4 Cuban Linx... (the Purple Tape) is Raekwon's August 1, 1995 debut solo album on Loud/RCA, produced by RZA with Ghostface Killah on 14 of 18 tracks; it popularized mafioso rap and influenced Jay-Z, Nas, and Biggie.
Only by the Night
Only by the Night is the fourth studio album by Kings of Leon, released September 2008 on RCA. Produced by Angelo Petraglia and Jacquire King at Blackbird Studio, Nashville, it launched Sex on Fire and Use Somebody and became the UK's biggest seller of 2009.
Only child
Only child: a person raised without siblings. Covers definitions and measurement, EU and UK prevalence, outcome research from Polit and Falbo onward, and China's one-child policy cohort.
Only Child (TV series)
Only Child is a BBC sitcom (2024–2026) written by Bryce Hart, starring Gregor Fisher and Greg McHugh as widower Ken Pritchard and his only-child son Richard in Forres, Scotland; produced by Happy Tramp North, two series of six 30-minute episodes.
Only Connect
Only Connect is a BBC quiz show hosted by Victoria Coren Mitchell since 15 September 2008, first on BBC Four then BBC Two, where teams of three find connections between unconnected clues, including the 16-clue Connecting Wall.
Only Fools and Horses
Only Fools and Horses: BBC One sitcom by John Sullivan, first aired 8 September 1981, running to 2003; Del Boy (David Jason) and Rodney (Nicholas Lyndhurst) Trotter of Peckham; 24.3 million-viewer 1996 special Time On Our Hands; Britain's Best Sitcom 2004; The Lost Archive documentary 2026.
Only for Love (TV series)
Only for Love (以爱为营, also Cuo Liao/错撩) is a 2023 Chinese urban romance drama adapted from Qiao Yao's novel, starring Bai Lu and Dylan Wang as a financial reporter and CEO, 36 episodes on Mango TV and Hunan TV, Douban 4.2, distinct from the 2022 Brazilian Netflix series of the same English name.
Only Friends
Only Friends (เพื่อนต้องห้าม, Phuean Tong Ham) is a 2023 Thai BL series by GMMTV, aired on GMM25 in 12 episodes from 12 August to 28 October 2023, about university friends whose hostel project entangles them in love and secrets; sequel Only Friends: Dream On followed with a new cast.
Only Friends: Dream On
Only Friends: Dream On (เพื่อนต้องห้าม), also called Only Friends 2, is a 2026 GMMTV Thai BL series aired on One31 in 12 episodes from Feb 27 to May 15, 2026, about university students staging Romeo & Romeo, a male-male Romeo and Juliet adaptation, starring Earth, Mix, Joss, Gawin, Aou, and Boom.
Only Girl (In the World)
"Only Girl (In the World)" is a 2010 dance-pop single by Rihanna from Loud, written by Stargate, Sandy Vee, and Crystal Johnson; a 16-country Number 1 and 2011 Grammy Best Dance Recording winner.