All articles starting with F
15,892 articles
Feather River
Feather River: major Sierra Nevada tributary of the Sacramento River in Northern California, 4,400-square-mile watershed. Site of Bidwell's 1848 gold strike, Oroville Dam (State Water Project keystone), and salmon hatchery and gravel restoration.
Feathered dinosaur
Feathered dinosaurs: non-avian dinosaurs with feathers or protofeathers, first proven by Sinosauropteryx (Liaoning, 1996) and Archaeopteryx (1861). Feathers concentrate in coelurosaur theropods; earliest dinosaurs were probably scaly; feathers served insulation, display and camouflage before flight.
Feathered Serpent
The Feathered Serpent is a Mesoamerican deity combining snake and bird, known in Nahuatl as Quetzalcoatl, a principal Aztec god worshipped from Olmec times to 1521.
Featherlight Capital
Featherlight Capital is a London-based investment firm founded in 2024 that takes long-term minority stakes in independent firms raising climate-focused growth equity and private equity funds.
Feathers (framework)
Feathers, also known as FeathersJS, is a lightweight open framework for Node.js, started in 2013, that builds REST and websocket APIs around a uniform service interface rather than routes and controllers.
Featherweight
Featherweight: combat sports weight class, 126 lb (57.2 kg) in boxing, 145 lb (65.8 kg) in MMA/UFC; originated in the 1860s London Prize Ring Rules at 118 lb, set at 126 lb in 1909.
Featherwork
Featherwork, in Spanish arte plumaria and Nahuatl amantecayotl, is the art of making objects and images from bird feathers, reaching its greatest refinement in pre-Hispanic and colonial Mexico through feather mosaic.
Feature (machine learning)
A feature in machine learning is an input variable, also called a dimension, used to generate predictions, with feature engineering transforming raw data into useful form.
Feature barcoding
Feature barcoding is a single-cell genomics method in which DNA-barcoded antibodies are sequenced alongside mRNA, quantifying surface proteins and sample identity with gene expression; CITE-seq is the best-known implementation.
Feature engineering
Feature engineering is the use of domain knowledge to create features, the input variables machine learning algorithms work on, aiming for a minimal subset that preserves predictive performance.
Feature film
Feature film: the full-length motion picture, normally over 60 minutes, made as a cinema program's main attraction. Also called feature-length film. Distinguished from shorts by runtime, narrative scope, and theatrical presentation; 9,628 produced worldwide in 2024.
Feature learning
Feature learning, also called representation learning, is the set of machine learning methods in which a system automatically discovers data representations that make tasks like classification easier.
Feature matching (computer vision)
Feature matching is the computer vision method that establishes correspondences between detected image features across images, feeding object recognition, structure from motion, SLAM, and visual localization.
Feature mode decomposition
Feature mode decomposition (FMD) is an adaptive signal decomposition method, introduced in 2022, that splits vibration signals into modes with distinct center frequencies for machinery fault diagnosis.
Feature phone
A feature phone, also known as a dumb phone, is a mobile phone that is not a smartphone, offering calling, texting, and built-in functions rather than full apps.
Feature Policy
Feature Policy is a former W3C web platform mechanism for enabling or disabling browser features such as geolocation and camera, renamed Permissions Policy in 2020.
Feature pyramid network
A feature pyramid network (FPN) is a computer vision component that builds multi-scale feature maps from one image pass, helping detectors recognize objects of very different sizes.
Feature recognition
Feature recognition, also called automatic feature recognition, is the task of detecting machining features such as holes, slots, and pockets in CAD solid models, bridging design and manufacturing.
Feature scaling
Feature scaling is a machine learning preprocessing step that rescales the numeric features of a dataset to comparable ranges, such as zero mean and unit variance, before training a model.
Feature selection
Feature selection, also called variable or input selection, chooses a subset of a dataset's variables for a machine learning model to improve prediction and reduce overfitting.
Feature store
Feature store: a data system for storing, managing, and serving ML features consistently across training and inference. Also called feature platform (Tecton, Feast). Defined by dual offline/online stores, point-in-time correctness, and prevention of training-serving skew; emerged with Uber's Michelangelo in 2017.
Feature toggle
A feature toggle, also called a feature flag or feature flipper, is a mechanism that switches software functionality on or off at runtime, without code changes or redeployment, separating deployment from release.
Feature-driven development
Feature-driven development (FDD) is an agile software development method that organizes work around client-valued features, developed by Jeff De Luca and Peter Coad in the late 1990s.
Featureform
Featureform: open-source virtual feature store for machine learning, founded January 2021 by Simba Khadder and Shabnam Mokhtarani in San Francisco (formerly StreamSQL). MPL-2.0 licensed; orchestrates existing data infrastructure. Acquired by Redis October 2025, now Redis Feature Form.
Features of the Marvel Cinematic Universe
Features of the Marvel Cinematic Universe (MCU), Marvel Studios' shared superhero franchise begun with Iron Man (2008): phased structure, Infinity and Multiverse Sagas, transmedia storytelling, official timeline book, post-credits scenes, multiverse setting, and box-office records.
Features of the Marvel Universe
Features of the Marvel Universe: the shared setting (Earth-616) of most Marvel Comics, with its crossover tradition, real-world grounding, flawed heroes, multiverse, iconic places, artifacts like the Infinity Stones, and reference handbooks.
Febechi Nwaiwu
Febechi Nwaiwu, Houston Texans offensive guard (No. 64), Coppell, Texas native; walk-on at North Texas, two-year Oklahoma starter, All-SEC, drafted 2026 round 4, pick 106.
Febrile infection-related epilepsy syndrome
Febrile infection-related epilepsy syndrome (FIRES), also called AERRPS or DESC, is a rare NORSE-subtype epileptic encephalopathy: super-refractory status epilepticus begins 24 hours to 2 weeks after a febrile illness in previously healthy, mostly school-aged children, leaving drug-resistant epilepsy; incidence about 1 in 1,000,000.
Febrile seizure
Febrile seizure (febrile convulsion): a seizure triggered by fever (≥38°C) in children 6–60 months without CNS infection; affects 2–5% of children, recurs in 30–50%, benign prognosis, antipyretics do not prevent it.
February
February is the second month of the Gregorian calendar, with 28 days in common years and 29 in leap years, keeping the calendar aligned with the solar year.