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Para-cycling classification
C4 is a para-cycling classification. It includes people with lower limb impairments or issues with lower limb functionality. Disability groups covered
C4_(classification)
Topics referred to by the same term
Look up C4 or c4 in Wiktionary, the free dictionary. C4, C04, C.IV, C-4, or C-04 often refers to the explosive. It may also refer to: C4 (American band)
C4
Algorithm for making decision trees
ID3 algorithm. The decision trees generated by C4.5 can be used for classification, and for this reason, C4.5 is often referred to as a statistical classifier
C4.5_algorithm
Paris. Nine riders competed in the event. The C4 classification is for cyclists described as follows: C4: mild hemiplegic or diplegic spasticity; mild
Cycling at the 2024 Summer Paralympics – Women's road time trial C4
Cycling_at_the_2024_Summer_Paralympics_–_Women's_road_time_trial_C4
roughly 8,100 known C4 species, which belong to at least 61 distinct evolutionary lineages in 19 families (as per APG IV classification) of flowering plants
List_of_C4_plants
Paris. 13 riders competed in the event. The C4 classification is for cyclists described as follows: C4: mild hemiplegic or diplegic spasticity; mild
Cycling at the 2024 Summer Paralympics – Men's road time trial C4
Cycling_at_the_2024_Summer_Paralympics_–_Men's_road_time_trial_C4
existing world records in the C4 and C5 classifications at the extended distance had not been established; thet fastes C4 and C5 cyclist in qualification
Track cycling at the 2026 Commonwealth Games – Women's individual pursuit C4–5
Track_cycling_at_the_2026_Commonwealth_Games_–_Women's_individual_pursuit_C4–5
Vélodrom National at Saint-Quentin-en-Yvelines . This combine class (C4-5) under classification C is for cyclists who have impairments that affect their legs
Cycling at the 2024 Summer Paralympics – Men's time trial C4–5
Cycling_at_the_2024_Summer_Paralympics_–_Men's_time_trial_C4–5
Speedway, Japan. 9 riders from 8 nations competed in this event. The C4 classification is for cyclists with mild hemiplegic or diplegic spasticity; mild
Cycling at the 2020 Summer Paralympics – Men's road time trial C4
Cycling_at_the_2020_Summer_Paralympics_–_Men's_road_time_trial_C4
Speedway, Japan. 8 riders from 6 nations competed in this event. The C4 classification is for cyclists with mild hemiplegic or diplegic spasticity; mild
Cycling at the 2020 Summer Paralympics – Women's road time trial C4
Cycling_at_the_2020_Summer_Paralympics_–_Women's_road_time_trial_C4
Topics referred to by the same term
spectral type, see Wolf–Rayet star WC4, a parasport cycling classification, see C4 (classification) Dodge WC4, military light truck, see Dodge WC series World
WC4
Slovak Paralympic cyclist
cyclist competing in C4 classification events. He won a silver medal at the 2020 Summer Paralympics in the Men's road time trial C4 behind teammate Patrik
Jozef_Metelka
Iranian Paralympic athlete
September 2016) was an Iranian Paralympic racing cyclist competing in C4 classification events and an earlier powerlifter. During his powerlifting career
Bahman_Golbarnezhad
between classifications. The unfactored results counted for world and Games records within each classification. The results of the women's time trial C4-5 were
Track cycling at the 2026 Commonwealth Games – Women's 1 km time trial C4–5
Track_cycling_at_the_2026_Commonwealth_Games_–_Women's_1_km_time_trial_C4–5
Group of voices with similar vocal ranges
A voice type is a classification of the human singing voice into perceivable categories or groups. Particular human singing voices are identified as having
Voice_type
Vélodrome National at Saint-Quentin-en-Yvelines . This combine class (C4-5) under classification C is for cyclists who have impairments that affect their legs
Cycling at the 2024 Summer Paralympics – Women's time trial C4–5
Cycling_at_the_2024_Summer_Paralympics_–_Women's_time_trial_C4–5
Categorisation of cars according to vehicle regulations or market segments
Governments and private organizations have developed car classification schemes that are used for various purposes including regulation, description, and
Car_classification
Major clade in the grass family Poaceae
clade. The PACMAD lineage is the only group within the grasses in which the C4 photosynthesis pathway has evolved; studies have shown that this happened
PACMAD_clade
Organic compound consisting entirely of hydrogen and carbon
Mesitylene Pseudocumene Hemellitene Other Cumene n-Propylbenzene 4-Ethyltoluene C4-Benzenes Cymenes o-Cymene m-Cymene p-Cymene Tetramethylbenzenes Durene Isodurene
Hydrocarbon
Machine learning algorithm
tree algorithms include: ID3 (Iterative Dichotomiser 3) C4.5 (successor of ID3) CART (Classification And Regression Tree) OC1 (Oblique classifier 1). First
Decision_tree_learning
Machine learning problem
ends up, these distortions come about because learning algorithms such as C4.5 or CART explicitly aim to produce homogeneous leaves (giving probabilities
Probabilistic_classification
Range of pitches of a human voice
too rigidly applied. Soprano: the highest female voice typically between C4 and G6 Mezzo-soprano: the middle female voice typically between A3 and G5
Vocal_range
Process of categorizing documents
Automatic document classification techniques include: Artificial neural network Concept Mining Decision trees such as ID3 or C4.5 Expectation maximization
Document_classification
Biological process to convert light into chemical energy
of the leaf. C4 plants can produce more sugar than C3 plants in conditions of high light and temperature. Many important crop plants are C4 plants, including
Photosynthesis
New Zealand para cyclist
the 500m Time Trial and bronze in the Omnium. Taylor was given a C4 classification after an Acute Cauda Equina Syndrome in 2016 – severe disc prolapse
Anna_Taylor_(cyclist)
class C4-5 track cycling event at the 2020 Summer Paralympics took place on 26 August 2021 at the Izu Velodrome, Japan. This combine class (C4-5) under
Cycling at the 2020 Summer Paralympics – Men's time trial C4–5
Cycling_at_the_2020_Summer_Paralympics_–_Men's_time_trial_C4–5
Subfamily of plants
including sugarcane, maize (or corn), millet, sorghum, and switchgrass. C4 photosynthesis evolved independently a number of times in the subfamily, which
Panicoideae
France. 29 riders competed in the event. The C4-5 classification covers two classes described as follows: C4: mild hemiplegic or diplegic spasticity; mild
Cycling at the 2024 Summer Paralympics – Men's road race C4–5
Cycling_at_the_2024_Summer_Paralympics_–_Men's_road_race_C4–5
Family of flowering plants
eudicots (which collectively includes about 1,600 C4 species). Within the family, several types of C4 photosynthesis occur, and about 17 different types
Amaranthaceae
Subfamily of plants
subfamily's species use the C4 photosynthetic pathway[citation needed]. The first evolutionary transition from C3 to C4 photosynthesis in the grasses
Chloridoideae
Paralysis of all four limbs and torso
disorders (such as muscular dystrophy). Tetraplegia is defined in many ways; C1–C4 usually affects arm movement more so than a C5–C7 injury; however, all tetraplegics
Tetraplegia
Musical instrument of the guitar family
most common tunings for the standard or soprano ukulele is C6 tuning: G4–C4–E4–A4, which is often remembered by the notes in the "My dog has fleas" jingle
Ukulele
Australian Paralympic swimmer
scholarship holder since 2002. In 2010, she took up cycling in the C4 classification. After only three weeks of training, she won two gold medals at the
Hannah_Macdougall
Individual Pursuit C2 - Results and Final Classification, Union Cycliste Internationale (UCI) Women's Individual Pursuit C4 - Qualifying - Results, Union Cycliste
2011 UCI Para-cycling Track World Championships – Women's individual pursuit
2011_UCI_Para-cycling_Track_World_Championships_–_Women's_individual_pursuit
First round of the 2026 F1 season
debut, supplying their own power unit. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the three softest in their range) designated hard
2026_Australian_Grand_Prix
Canadian-born American Paralympic athlete (born 1983)
gold medal came in the C4 time trial and her silver in the track pursuit. The next year, Fisher won gold in the C4 classification at the 2013 UCI Para-cycling
Megan_Fisher
Classical singing voice with the highest vocal range
vocal range (using scientific pitch notation) is from approximately middle C (C4) = 261 Hz to A5 in choral music, or to soprano C (C6) or higher in operatic
Soprano
Wooden keyboard percussion instrument
This original flapamba had a range from middle C up two full octaves (from C4 to C6 in scientific pitch notation). In 2009, Richards decided to extend the
Flapamba
System to describe academic gowns or hoods
The Groves Classification is a numbering system to enable the shape of any academic gown or hood to be easily described and identified. It was devised
Groves_classification_system
Formula One motor race
electrical failure on his car. Tyre supplier Pirelli brought the C2, C3 and C4 tyre compounds, designated hard, medium and soft, respectively, for teams
2026 Barcelona-Catalunya Grand Prix
2026_Barcelona-Catalunya_Grand_Prix
Class of 27 British 4-4-2 locomotives
1939. In 1929, a further LNER classification change was made - the non-superheated locomotives were designated Class C4/1, those fitted with superheaters
GCR_Class_8B
Formula One motor race
their 1,000th Grand Prix at this event. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds—the softest three in their range (designated hard,
2026_Monaco_Grand_Prix
Voice classification in non-classical music is defined as specific vocal timbres unique to each vocal range. These timbres are produced by classical training
Voice classification in non-classical music
Voice_classification_in_non-classical_music
Competition classification for disabled athletes in sports
an international classification system was attempting to be developed for adaptive rowing. These classes were: Q1: Laesion at C4-C6, Q2: C7-T1, P1:
Disability sport classification
Disability_sport_classification
Women's C4-5 1000m Time Trial – Finals – Results" (PDF). results.apg2026.org. 20 October 2026. Retrieved 29 October 2026. "Cycling Track – Women's C4 3000m
World record progression in track para-cycling – Women's individual pursuit
World_record_progression_in_track_para-cycling_–_Women's_individual_pursuit
and Final Classification". veloresults.com. 17 October 2025. Retrieved 26 November 2025. "Track Cycling and Para Track Cycling – Women's C4-C5 1000m Time
List of world records in track para-cycling
List_of_world_records_in_track_para-cycling
Formula One motor race
Cadillac in place of Sergio Pérez. Tyre supplier Pirelli selected the C3, C4, and C5 tyre compounds—the softest three in its range, designated hard, medium
2026_Italian_Grand_Prix
Seventeenth round of the 2026 F1 season
additional stand-in drivers for the race. Tyre supplier Pirelli selected the C3, C4, and C5 tyre compounds—the softest three in its range, designated hard, medium
2026_Singapore_Grand_Prix
Eighteenth round of the 2026 F1 season
during the Mexico race weekend. Tyre supplier Pirelli selected its C2, C3, and C4 compounds—the middle three in its range—for the event, designating them as
2026_United_States_Grand_Prix
Nineteenth round of the 2025 F1 season
onward on a race-by-race basis. Tyre supplier Pirelli brought the C1, C3, and C4 tyre compounds (designated hard, medium, and soft, respectively) for teams
2025_United_States_Grand_Prix
Second round of the 2026 F1 season
1,000th entry for McLaren. Tyre supplier Pirelli brought the C2, C3, and C4 tyre compounds designated hard, medium, and soft, respectively, for teams
2026_Chinese_Grand_Prix
Twenty-first round of the 2025 F1 season
onward on a race-by-race basis. Tyre supplier Pirelli brought the C2, C3, and C4 tyre compounds designated hard, medium, and soft, respectively, for teams
2025_São_Paulo_Grand_Prix
Genus of plants
contain concentric rings of vascular bundles and fix carbon efficiently with a C4 photosynthetic pathway. Amaranth can grow from 1 to 2.5 metres (3 to 8 feet)
Amaranth
British paralympic athlete (born 1991)
is a parasport athlete competing in T38 para-athletics sprint events and C4 para-cycling and British television presenter. She was part of the 2015 IPC
Kadeena_Cox
Formula One motor race
(Cadillac)'s 300th Grand Prix entry. Tyre supplier Pirelli selected its C3, C4, and C5 compounds—the softest in its range—for the event, designating them
2026_Azerbaijan_Grand_Prix
Family of flowering plants commonly known as grasses
physiological diversity. There are both C3 and C4 grasses, referring to the photosynthetic pathway for carbon fixation. The C4 grasses have a photosynthetic pathway
Poaceae
Genus of flowering plants
which to study the evolution of C4 photosynthesis. Morphological differences that demonstrate the transition from C3 to C4 include C3 species having leaves
Cleome
Nineteenth round of the 2026 F1 season
Sergio Pérez's (Cadillac) 300th start. Tyre supplier Pirelli selected the C3, C4, and C5 tyre compounds (the softest three in their range) designated hard
2026_Mexico_City_Grand_Prix
Eighteenth round of the 2024 F1 season
following United States Grand Prix onwards. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the softest three in their range) designated hard
2024_Singapore_Grand_Prix
International football competition
match(es) will be played: 19 November 2026. Source: FIFA Rules for classification: Group stage tiebreakers (H) Hosts 19 November 2026 (2026-11-19) 17:00
2026_FIFA_U-17_World_Cup
Classification problem where multiple labels may be assigned to each instance
multi-label data. decision trees: "Clare" is an adapted C4.5 algorithm for multi-label classification; the modification involves the entropy calculations
Multi-label_classification
Artery supplying the brain
or C4, almost identical to the commonly used cavernous portion Clinoid segment, or C5. This segment is not identified in some earlier classifications and
Internal_carotid_artery
Twenty-second round of the 2024 F1 season
from the United States Grand Prix. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the softest three in their range) designated hard
2024_Las_Vegas_Grand_Prix
Formula One motor race
Mercedes in place of Kimi Antonelli. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds—the softest three in its range, designated hard, medium
2026_Hungarian_Grand_Prix
Formula One motor race
the Formula One regulations. Tyre supplier Pirelli brought the C2, C3 and C4 tyre compounds, designated hard, medium and soft, respectively, for teams
2026_Belgian_Grand_Prix
Formula One motor race
stand-in drivers for the race. Tyre supplier Pirelli selected its C2, C3, and C4 compounds—the middle three in its range—for the event, designating them as
2026 Bahrain Grand Prix in Malaysia
2026_Bahrain_Grand_Prix_in_Malaysia
Formula One motor race
additional stand-in drivers for the race. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (designated hard, medium, and soft, respectively) for
2023_Monaco_Grand_Prix
British cyclist (born 1977)
medals, one in the Time Trial C4–5 500m, one in the Individual Road Time Trial C5 and finally one in the Individual Road Race C4–5. In 2014, Storey and her
Sarah_Storey
Protein family
belonging to the DcuC family can be found in the Transporter Classification Database. An anaerobic C4-dicarboxylate transporter (DcuC) of E. coli (TC# 2.A.61
DcuC_family
Twentieth round of the 2024 F1 season
first driver to reach that milestone. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the softest three in their range) designated hard
2024_Mexico_City_Grand_Prix
Motor vehicle
The Citroën C4 and C6 models were designed to replace the Citroën Type A 10 hp and Citroën Type B model family cars. The styling of the two models was
Citroën_C4_&_C6
Mexican plucked string instrument
According to the work of researcher Francisco García Ranz, this is the classification of the son guitar family, which includes the leona: pick to play requinto
Requinto_jarocho
Second round of the 2024 F1 season
made his Formula One debut. Tyre supplier Pirelli brought the C2, C3, and C4 tyre compounds (the middle three in their range) designated hard, medium,
2024_Saudi_Arabian_Grand_Prix
Twentieth round of the 2025 F1 season
their Formula One practice debuts. Tyre supplier Pirelli brought the C2, C4, and C5 tyre compounds designated hard, medium, and soft, respectively, for
2025_Mexico_City_Grand_Prix
2013 edition of the Diagnostic and Statistical Manual of Mental Disorders
importance. However, some providers instead rely on the International Classification of Diseases (ICD), and scientific studies often measure changes in symptom
DSM-5
Formula One motor race
stand-in drivers for the race. Tyre supplier Pirelli brought the C2, C3, and C4 tyre compounds (the middle three in their range), designated hard, medium
2024_Miami_Grand_Prix
Family of x86 central processing units for personal computers
instruction + 64 KiB data L2 cache 64 KiB exclusive Architecture and classification Technology node 0.13 μm to 0.15 μm Instruction set x86-16 and IA-32
VIA_C3
Formula One motor race
team before they become Audi in 2026. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds designated hard, medium, and soft, respectively, for
2025_Abu_Dhabi_Grand_Prix
Nineteenth round of the 2023 F1 season
made their Formula One practice debut. Tyre supplier Pirelli brought the C3, C4 and C5 tyre compounds (designated hard, medium, and soft, respectively), which
2023_Mexico_City_Grand_Prix
Formula One motor race
additional stand-in drivers for the race. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (designated hard, medium, and soft, respectively) for
2023_Azerbaijan_Grand_Prix
covering six classifications. Cyclists are given a classification depending on the type and extent of their disability. The classification system allows
Cycling at the 2016 Summer Paralympics – Women's time trial
Cycling_at_the_2016_Summer_Paralympics_–_Women's_time_trial
Twenty-second round of the 2023 F1 season
who was replaced by Ayao Komatsu. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (designated hard, medium, and soft, respectively),
2023_Abu_Dhabi_Grand_Prix
Genus of aquatic plants
species members of the new genus. The genus includes plants using either C3 or C4 carbon fixation. The latter pathway evolved independently three times in the
Suaeda
Formula One motor race
team, effectively on a race-by-race basis. Tyre supplier Pirelli brought the C4, C5, and C6 tyre compounds—the softest three in their range (designated hard
2025_Azerbaijan_Grand_Prix
Formula One motor race
following Emilia Romagna Grand Prix. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (designated hard, medium, and soft, respectively) for
2025_Miami_Grand_Prix
Categorization of computer network traffic
K-Means, Naive Bayes Filter, C4.5, C5.0, J48, or Random Forest Fast technique (compared to deep packet inspection classification) It can detect the class
Traffic_classification
The women's road race C4-5 cycling event at the 2016 Summer Paralympics took place on September 17 at Pontal, Rio. The race distance was 60 km. "Rio 2016
Cycling at the 2016 Summer Paralympics – Women's road race C4–5
Cycling_at_the_2016_Summer_Paralympics_–_Women's_road_race_C4–5
Formula One motor race
2006–2009 and the Alfa Romeo name in 2019–2023. Tyre supplier Pirelli brought the C4, C5, and C6 tyre compounds—the softest three in their range (designated hard
2025 Emilia-Romagna Grand Prix
2025_Emilia-Romagna_Grand_Prix
Formula One motor race
additional stand-in drivers for the race. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds—the softest three in their range (designated hard,
2026_Canadian_Grand_Prix
Set of opening moves in chess
1.Nf3 and 1.c4 trail only 1.e4 and 1.d4 in popularity as opening moves. This article uses algebraic notation to describe chess moves. 1.c4 – English Opening
Flank_opening
Initial moves of a chess game
such as the Reversed Sicilian (1.c4 e5), the Symmetrical Variation (1.c4 c5), and the Mikėnas–Carls Variation (1.c4 Nf6 2.Nc3 e6 3.e4). Play can proceed
Chess_opening
Formula One motor race
additional stand-in drivers for the race. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the three softest in their range) for teams to use
2026_Miami_Grand_Prix
Formula One motor race
Kevin Magnussen, driving for Haas. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds (the softest three in their range) designated hard
2024_Abu_Dhabi_Grand_Prix
Third planet from the Sun
reducing CO2 concentration to levels lethally low for current plants (10 ppm for C4 photosynthesis) in approximately 100–900 million years. A lack of vegetation
Earth
First round of the 2025 F1 season
Sauber, and Williams, respectively. Tyre supplier Pirelli brought the C3, C4, and C5 tyre compounds, designated hard, medium, and soft, respectively, for
2025_Australian_Grand_Prix
International cricket tournament
will be played: unknown. Source: Cricinfo[citation needed] Rules for classification: 1) Points; 2) Wins; 3) Net run rate; 4) Results of games between tied
2028_Men's_T20_World_Cup
Formula One motor race
first two rounds of 2025. Tyre supplier Pirelli selected its C2, C3, and C4 compounds—the middle three in its range—for the event, designating them as
2026_Dutch_Grand_Prix
Qualifier for UEFA Euro 2028
First match(es) will be played: March 2027. Source: UEFA Rules for classification: Counting only matches against teams ranked first to fourth in the group
UEFA_Euro_2028_qualifying
The men's road race C4-5 cycling event at the 2016 Summer Paralympics took place on September 17 at Pontal, Rio. The race distance was 60 km. During this
Cycling at the 2016 Summer Paralympics – Men's road race C4–5
Cycling_at_the_2016_Summer_Paralympics_–_Men's_road_race_C4–5
New Zealand para-cyclist and para-swimmer
Para-cycling Track World Championships under the C4 classification. In December 2018, she set a new world record in the C4 flying 200 m time trial event at the Southland
Nikita_Howarth
travel, tourism, insurance
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C4 CLASSIFICATION
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C4 CLASSIFICATION
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