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Algorithm for finding the convex hull of a set of points in the plane
In computational geometry, Chan's algorithm, named after Timothy M. Chan, is an optimal output-sensitive algorithm to compute the convex hull of a set
Chan's_algorithm
Class of algorithms in computational geometry
convex hull algorithm"). A much simpler algorithm was developed by Chan in 1996, and is called Chan's algorithm. Known convex hull algorithms are listed
Convex_hull_algorithms
Optimized algorithm for computing the convex hull of a set of points
The Kirkpatrick–Seidel algorithm is an algorithm designed for computing the convex hull of a set of points in the plane, offering a time complexity of
Kirkpatrick–Seidel_algorithm
An algorithm is a fundamental set of rules or defined procedures that are typically designed and used to be a simpler way to solve a specific problem
List_of_algorithms
Algorithm for computing convex hulls in a set of points
gift wrapping algorithm is an algorithm for computing the convex hull of a given set of points. In the two-dimensional case the algorithm is also known
Gift_wrapping_algorithm
Fast method for calculating the digits of π
The Chudnovsky algorithm is a fast method for calculating the digits of π, based on Ramanujan's π formulae. Published by the Chudnovsky brothers in 1988
Chudnovsky_algorithm
In the study of algorithms, an LP-type problem (also called a generalized linear program) is an optimization problem that shares certain properties with
LP-type_problem
Computational geometry problem
{\displaystyle \Omega (n\log n)} , and optimal algorithms with this running time are known for d=1 and d=2. The Chan algorithm provides an upper bound of O ( n d
Klee's_measure_problem
Property describing run-time complexity of algorithms
In computer science, an output-sensitive algorithm is an algorithm whose running time depends on the size of the output, instead of, or in addition to
Output-sensitive_algorithm
Canadian computer scientist
contributions to computational geometry, algorithms, and data structures". Chan's algorithm, an output-sensitive algorithm for planar convex hulls Two CS faculty
Timothy_M._Chan
Exponential function of an exponential function
of algorithms, double exponential sequences are used within the design of an algorithm rather than in its analysis. An example is Chan's algorithm for
Double_exponential_function
Branch of computer science
of algorithms that can be stated in terms of geometry. Some purely geometrical problems arise out of the study of computational geometric algorithms, and
Computational_geometry
Smallest convex set containing a given set
output-sensitive algorithms are known that compute the convex hull in time O ( n log h ) {\displaystyle O(n\log h)} . These include Chan's algorithm and the
Convex_hull
Important algorithms in numerical statistics
Algorithms for calculating variance play a major role in computational statistics. A key difficulty in the design of good algorithms for this problem is
Algorithms for calculating variance
Algorithms_for_calculating_variance
subdivision surface, texture mapping Vint Cerf – TCP/IP, NCP Timothy M. Chan – Chan's algorithm Donald D. Chamberlin – SQL David Chaum – blind signatures, International
List_of_programmers
Algorithm in graph theory
Floyd–Warshall algorithm (also known as Floyd's algorithm, the Roy–Warshall algorithm, the Roy–Floyd algorithm, or the WFI algorithm) is an algorithm for finding
Floyd–Warshall_algorithm
Method for finding kth smallest value
In computer science, a selection algorithm is an algorithm for finding the k {\displaystyle k} th smallest value in a collection of orderable values,
Selection_algorithm
Technological phenomenon with social implications
Algorithmic bias describes systematic and repeatable harmful tendency in a computerized sociotechnical system to create "unfair" outcomes, such as "privileging"
Algorithmic_bias
Sweep line algorithm
In computational geometry, the Bentley–Ottmann algorithm is a sweep line algorithm for listing all crossings in a set of line segments, i.e. it finds
Bentley–Ottmann_algorithm
Theoretical chemist
density matrix renormalization group (DMRG) theory and tensor network algorithms. Chan attended the University of Cambridge, where he was a member of Christ's
Garnet_K.-L._Chan
contributions to the development of efficient localizaiton and tracking algorithms. "2016 elevated fellow" (PDF). IEEE Fellows Directory. Archived from the
Yiu_Tong_Chan
Primal-Dual algorithm optimization for convex problems
In mathematics, the Chambolle–Pock algorithm is an algorithm used to solve convex optimization problems. It was introduced by Antonin Chambolle and Thomas
Chambolle–Pock_algorithm
World's first auction of computer algorithms
The Algorithm Auction is the world's first auction of computer algorithms. Created by Ruse Laboratories, the initial auction featured seven lots and was
The_Algorithm_Auction
manufacturing shop. The DCA was introduced in 1982 by H.M. Chan and D.A. Milner The algorithm restructures the existing machine / component (product) matrix
Direct_clustering_algorithm
reduction algorithms are algorithms used to reduce constraints and degrees of freedom in order to provide solutions for partial differential equations. Chan, Tony
Domain_reduction_algorithm
the scheme was deemed fundamentally flawed by lawyers in 2014 as an algorithm was used to match welfare recipients' reported earnings with averaged
List of The Weekly with Charlie Pickering episodes
List_of_The_Weekly_with_Charlie_Pickering_episodes
Hybrid sorting algorithm based on insertion sort and merge sort
Timsort is a hybrid, stable sorting algorithm, derived from merge sort and insertion sort, designed to perform well on many kinds of real-world data.
Timsort
Equivalence of average-case and expected complexity
performance of randomized algorithms to deterministic (non-random) algorithms. It states that, for certain classes of algorithms, and certain measures of
Yao's_principle
Coordination of independent clocks
trivial; the server will dictate the system time. Cristian's algorithm and the Berkeley algorithm are potential solutions to the clock synchronization problem
Clock_synchronization
Mathematical optimization algorithm
In mathematics, the conjugate gradient method is an algorithm for the numerical solution of particular systems of linear equations, namely those whose
Conjugate_gradient_method
Video-focused social media platform
mental health concerns, misinformation, offensive content, addictive algorithm, its role during the Gaza war, and, following its 2026 divestiture in
TikTok
Distance from a point to the boundary of a set
method and the more general level-set method. For voxel rendering, a fast algorithm for calculating the SDF in taxicab geometry uses summed-area tables. Signed
Signed_distance_function
Statistical method for fitting a line
nonparametric technique for estimating a linear trend". There are fast algorithms for efficiently computing the parameters. As defined by Theil (1950),
Theil–Sen_estimator
Lebanese-American physician and researcher
Research. He is known for his research on racial bias in health care algorithms and the use of artificial intelligence in health care. Obermeyer was born
Ziad_Obermeyer
Japanese manga and anime series
Interviews with Monster Girls (Japanese: 亜人（デミ）ちゃんは語りたい, Hepburn: Demi-chan wa Kataritai; lit. 'Demi Wants to Talk') is a Japanese manga series written
Interviews_with_Monster_Girls
Unrelated vertices in graphs
MR 2678485. Chan, T. M. (2003), "Polynomial-time approximation schemes for packing and piercing fat objects", Journal of Algorithms, 46 (2): 178–189
Independent set (graph theory)
Independent_set_(graph_theory)
Algorithmic problem on point-line incidence
Eppstein by Jiří Matoušek, Chan and Zheng describe an algorithm that performs a constant number of levels of the recursive algorithm, reducing the problem
Hopcroft's_problem
Problem in computational complexity theory
Unsolved problem in computer science Is there an algorithm to solve the 3SUM problem in time O ( n 2 − ϵ ) {\displaystyle O(n^{2-\epsilon })} , for some
3SUM
Sphere that contains a set of objects
practicality in higher dimensions. A more recent deterministic algorithm of Timothy Chan runs in O ( d ( 1 2 + o ( 1 ) ) d n ) {\displaystyle O(d^{\left({\frac
Bounding_sphere
Mathematical puzzle game
tower. This provides the following algorithm, which is easier, carried out by hand, than the recursive algorithm. In alternate moves: Move the smallest
Tower_of_Hanoi
Multivariate generalization of the median
Mukhopadhyay (1994). Chan (2004). Clarkson et al. (1996). Har-Peled & Jones (2020) Chan, Timothy M. (2004), "An optimal randomized algorithm for maximum Tukey
Centerpoint_(geometry)
Smallest convex polygon containing a given polygon
concept of a convex hull. It can be computed in linear time, faster than algorithms for convex hulls of point sets. The convex hull of a simple polygon can
Convex hull of a simple polygon
Convex_hull_of_a_simple_polygon
Concept in computational geometry
sets. An algorithm of Chan finds a disjoint set with a size of at least (1 − 2/k)⋅|MDS(C)| in time nO(k), for every constant k > 1. The algorithm uses shifted
Maximum_disjoint_set
Points separated from others by a line
(1996); Chan (2005c). Eppstein 2022. Eppstein 1998. Agarwal, P. K. (1990). "Partitioning arrangements of lines I: An efficient deterministic algorithm". Discrete
K-set_(geometry)
Number divisible only by 1 and itself
of any integer between 2 and n {\displaystyle {\sqrt {n}}} . Faster algorithms include the Miller–Rabin primality test, which is fast but has a small
Prime_number
Color reconstruction algorithm
Demosaicing, also known as color reconstruction, is a digital image processing algorithm used to reconstruct a full color image from the incomplete color samples
Demosaicing
Technique used in signal processing and data compression
uses a hybrid DCT-FFT algorithm), Advanced Audio Coding (AAC), and Vorbis (Ogg). Nasir Ahmed also developed a lossless DCT algorithm with Giridhar Mandyam
Discrete_cosine_transform
American political advisor and lobbyist
the company. He has successfully advocated for changes in Facebook's algorithm to promote the interests of right-wing publications and successfully prevented
Joel_Kaplan
Network queuing discipline
Bensaou, Brahim; Chan, K. T.; Tsang, Danny H. K. (25–28 May 1997). "Credit-based fair queueing (CBFQ): A simple and feasible scheduling algorithm for packet
Credit-based_fair_queuing
System that regulates the formation of blocks on a blockchain
through the idea of "reusable proof of work" using the 160-bit secure hash algorithm 1 (SHA-1). Proof of work was later popularized by Bitcoin as a foundation
Proof_of_work
Japanese manga series by Masamune Shirow
and Yuki Yoshimoto (illustrator), titled Ghost in the Shell: The Human Algorithm, was made as the sequel to GiTS 1.5. Primarily set in the mid-21st century
Ghost_in_the_Shell_(manga)
Anonymous imageboard website
pages. /r9k/ is a board that implements Randall Munroe's "ROBOT9000" algorithm, where no exact reposts are permitted. It is credited as the origin of
4chan
Mathematical expression with outer and inner radicals
introduced the first algorithm for deciding which nested radicals can be denested and denesting them when possible. Earlier algorithms worked in some cases
Nested_radical
Process in machine learning and statistics
features and comparatively few samples (data points). A feature selection algorithm can be seen as the combination of a search technique for proposing new
Feature_selection
Fast Fourier Transform algorithm
The prime-factor algorithm (PFA), also called the Good–Thomas algorithm (1958/1963), is a fast Fourier transform (FFT) algorithm that re-expresses the
Prime-factor_FFT_algorithm
Statistical Markov model
maximum likelihood estimation. For linear chain HMMs, the Baum–Welch algorithm can be used to estimate parameters. Hidden Markov models are known for
Hidden_Markov_model
Algorithmic optimization method
algorithms for combinatorial optimization, parametric search is a technique invented by Nimrod Megiddo in 1983 for transforming a decision algorithm (does
Parametric_search
Claude Michael Gann 41 WTC Roswell Georgia United States sales executive Algorithmics Charles "UncleChaCha" William Garbarini 44 WTC Pleasantville New York
List of victims of the September 11 attacks (A–G)
List_of_victims_of_the_September_11_attacks_(A–G)
Failure of the heart to provide sufficient blood flow throughout the body
pressures". The European Society of Cardiology has developed a diagnostic algorithm for HFpEF, named HFA-PEFF. HFA-PEFF considers symptoms and signs, typical
Heart_failure
Navigation and surveillance technique
K.W. Cheung, H.C. So, W.K. Ma, Y.T. Chan, "A Constrained Least Squares Approach to Mobile Positioning: Algorithms and Optimality," EURASIP Journal on
Pseudo-range_multilateration
which is an extension of the concept of memetic algorithm, the user can define its own optimization algorithm as a set of independent pieces of code called
Kimeme
American social networking service
mid-2008, an algorithmic lists of trending topics among users. A word or phrase mentioned can become "trending topic" based on an algorithm. Because a relatively
X_(social_network)
American market making firm
best prices for retail orders routed by other broker-dealers, two of its algorithms did not internalize retail orders at the best price observed nor sought
Citadel_Securities
Georgia Institute of Technology Jesus 2013 United States Founder of the Algorithmic Justice League Julian Gewirtz Harvard College St Edmund 2013 United States
List_of_Rhodes_Scholars
been improved by Timothy M. Chan and others. In a number of applications finding the convex hull is a step in an algorithm for the solution of the overall
Dynamic_convex_hull
Theoretical model of computation
computational complexity theory, and more specifically in the analysis of algorithms with integer data, the transdichotomous model is a variation of the random-access
Transdichotomous_model
Process of generating keys in cryptography
systems include symmetric-key algorithms (such as DES and AES) and public-key algorithms (such as RSA). Symmetric-key algorithms use a single shared key; keeping
Key_generation
User-generated website displaying artworks
Egammal of Rutgers University used images from WikiArt in training an algorithm to look at paintings and detect the works’ genre, style and artist. Later
WikiArt
Hong Kong mathematician (born 1952)
levels." IEEE Fellow, 2016, "for contributions to computational models and algorithms for image processing". Honorary Doctor of the University, University of
Tony_F._Chan
Short-form section of video-sharing platform
on-screen captions. Viewers can scroll through an endless feed of videos algorithmically tailored for the user. Although intended to be watched on smartphones
YouTube_Shorts
Mapping function that preserves data point locality
358741, S2CID 14988647. Chan, T. (2002), "Closest-point problems simplified on the RAM", ACM-SIAM Symposium on Discrete Algorithms. Connor, M.; Kumar, P
Z-order_curve
Disciplines into which the field of engineering is conventionally divided
Interdisciplinary. Oxford University Press, 2010. (pp. 149–150) Wiebe, A. J.; Chan, C. W. (April 2012). "Ontology driven software engineering". 2012 25th IEEE
List_of_engineering_branches
Artificial intelligence division of Meta Platforms
their early chips, is designed for the company's content recommendation algorithms. It was fabricated on TSMC's 7 nm process technology and consumed 25W
Meta_Superintelligence_Labs
Multidimensional fast Fourier transform algorithm
FFT algorithm, is a multidimensional fast Fourier transform (FFT) algorithm, which is a generalization of the ordinary Cooley–Tukey FFT algorithm that
Vector-radix_FFT_algorithm
Japanese web novel series
and I Don't Need an S-Rank Party! (2021) Ghost in the Shell: The Human Algorithm (2021) Arakure Ojōsama wa Monmon Shiteiru (2022) Satanophany (2023) Secret
I'm a Curse Crafter, and I Don't Need an S-Rank Party!
I'm_a_Curse_Crafter,_and_I_Don't_Need_an_S-Rank_Party!
Algorithm for measuring similarity between temporal sequences
In time series analysis, dynamic time warping (DTW) is an algorithm for measuring similarity between two temporal sequences, which may vary in speed.
Dynamic_time_warping
Form of political manipulation
algorithm. The algorithm uses only the shape of the state, the number N of districts wanted, and the population distribution as inputs. The algorithm
Gerrymandering
American science fiction thriller TV miniseries (2020)
critics praising its imagination, cinematography, acting, and soundtrack. Lily Chan is a software engineer for Amaya, a quantum computing company run by Forest
Devs_(TV_series)
Puzzle computer game involving planar graphs
Xiph.org's Chris Montgomery, which possesses additional level generation algorithms and the ability to manipulate multiple nodes at once. The definition of
Planarity
Social media platform owned by Meta
a strictly chronological order to one determined by an algorithm. Instagram said the algorithm was designed so that users would see more of the photos
Algorithm for solving matrix-vector equations
algebra, the conjugate gradient squared method (CGS) is an iterative algorithm for solving systems of linear equations of the form A x = b {\displaystyle
Conjugate gradient squared method
Conjugate_gradient_squared_method
Inca abacus
state-of-the-art research and advanced theories so far. He also proposed the algorithms for calculating the four basic arithmetic operations for the Poma de Ayala
Yupana
Chinese-born crypto billionaire (born 1990)
Justin Sun's Tron Stablecoin". Bloomberg. Sandor, Coindesk. "Another algorithmic stablecoin loses its peg as Tron's USDD falls, with founder Justin Sun
Justin_Sun
Statistical method
surprisingly large number of these step detection algorithms are special cases of a more general algorithm. This algorithm involves the minimization of a global functional:
Step_detection
2000 film by Wong Kar-wai
Su Li-zhen (Mrs. Chan) Tony Leung Chiu-wai as Chow Mo-wan Siu Ping as Ah Ping, Chow's co-worker Rebecca Pan as Mrs. Suen, the Chans' landlady Kelly Lai
In_the_Mood_for_Love
Theoretical description of Earth's gravimetric shape
the gradient of the potential, must be computed. Efficient recursive algorithms have been designed to compute the gravitational force for any N z {\displaystyle
Geopotential spherical harmonic model
Geopotential_spherical_harmonic_model
Competence to evaluate AI technologies
sources of error and uncertainty in algorithms and data. Auditability: Enable other parties to audit and assess algorithm behavior via transparent information
AI_literacy
Japanese manga series
and I Don't Need an S-Rank Party! (2021) Ghost in the Shell: The Human Algorithm (2021) Arakure Ojōsama wa Monmon Shiteiru (2022) Satanophany (2023) Secret
Secret Rites with the Holy Maidens
Secret_Rites_with_the_Holy_Maidens
Electric current produced in living cells
understanding how specific patterns of bioelectric dynamics help control the algorithms that accomplish large-scale pattern regulation (regeneration and development
Developmental_bioelectricity
British algorithmic trading company
XTX Markets Limited is a British algorithmic trading company based in London. It was founded in January 2015 by Alexander Gerko, who is currently co-CEO
XTX_Markets
Image-generating machine learning model
original on April 20, 2023. Retrieved March 18, 2025. Saharia, Chitwan; Chan, William; Saxena, Saurabh; Li, Lala; Whang, Jay; Denton, Emily; Seyed Kamyar
Imagen_(text-to-image_model)
Class of algorithms for solving constrained optimization problems
Augmented Lagrangian methods are a certain class of algorithms for solving constrained optimization problems. They have similarities to penalty methods
Augmented_Lagrangian_method
Japanese manga series
Kiseki no Yami no Keiyakusha (2019–2023) Ghost in the Shell: The Human Algorithm (2019–2021) 2020s Violence Jack 20XX (2021–2022) Candy and Cigarettes
Wangan_Midnight
Data structure for a string
practice One of the first algorithms to achieve all goals is the SA-IS algorithm of Nong, Zhang & Chan (2009). The algorithm is also rather simple (< 100
Suffix_array
South Korean computer scientist (born 1976)
evaluated the bit error rate and the sum rate performances of the proposed algorithm, and showed that the proposed method performs close to the sum capacity
Chan-Byoung_Chae
Internet challenge revolving around the choking game
lawsuit against TikTok in Delaware, suggesting that TikTok's "For You" algorithm promoted the blackout challenge videos to minors and failed to outline
Blackout_challenge
Video that becomes popular via Internet sharing
YouTube introduced a "trending" tab to alert users to viral videos using an algorithm based on comments, views, "external references", and even location. The
Viral_video
Machine learning model
1109/PICC51425.2020.9362485. ISBN 978-1-7281-7590-4. Kim, Taehoon; Kang, ChanHee; Park, JaeHyuk; Jeong, Daun; Yang, ChangHee; Kang, Suk-Ju; Kong, Kyeongbo
Text-to-video_model
Artificial Intelligence
Romero, Alberto (2022-06-21). "GPT-4Chan: 'The worst AI ever'". The Algorithmic Bridge. Archived from the original on 2023-11-20. Retrieved 2023-11-20
GPT-4Chan
Computing company founded in 2014
cryptographic keys to support traditional algorithms, such as RSA and AES, as well as post-quantum cryptography algorithms. Quantum Origin is said to be the first
Quantinuum
CHANS ALGORITHM
CHANS ALGORITHM
Boy/Male
Indian
Chant; Mantra
Male
German
German short form of Latin Johannes, HANS means "God is gracious."
Boy/Male
Hindu
Famous
Female
Thai/Siamese
Thai name PEN-CHAN means "full moon."
Boy/Male
Indian
Chant
Boy/Male
English Irish
Young wolf.
Boy/Male
Muslim
Chant
Male
Hindi/Indian
(चणà¥à¤¡) Masculine form of Hindi Chanda, CHAND means "bright" or "fierce."
Female
Hebrew
Pet form of Hebrew Channah, CHANI means "favor; grace."
Girl/Female
Indian
Beauteous, Beloved
Girl/Female
Tamil
Sumantrina | ஸà¯à®®à®¾à®‚நà¯à®¤à¯à®°à¯€à®¨à®¾
Chant
Sumantrina | ஸà¯à®®à®¾à®‚நà¯à®¤à¯à®°à¯€à®¨à®¾
Boy/Male
Arabic, German, Muslim
Chant
Boy/Male
Spanish
Abbreviations for names ending in '-ano' and '-rio.' Chan: (Chinese) family name.
Boy/Male
Muslim
The Moon, To shine, Moon light
Boy/Male
Hindu
The Moon, To shine, Moon light
Girl/Female
Hindu
Chant
Boy/Male
Indian
Chant; Chanting
Male
English
Pet form of English Charles, CHAS means "man."
Female
Hebrew
Variant spelling of Hebrew Channa, CHANA means "favor; grace."Â
Boy/Male
Indian, Sanskrit
Prayer; Chant
CHANS ALGORITHM
CHANS ALGORITHM
Boy/Male
Tamil
Prashanna | பà¯à®°à®·à®¨à®¨à®¾
Cheerful, Pleased, Happy
Boy/Male
Indian
Cute
Girl/Female
African, American, Arabic, Hindu, Indian, Japanese, Malayalam, Muslim, Tamil, Telugu
Ethiopian; Beautiful Blossom; Defining an Eye; Innocent One
Girl/Female
Indian, Tamil
Attractive
Boy/Male
Tamil
Sreenivasa | ஸà¯à®°à¯€à®¨à¯€à®µà®¾à®¸à®¾
Lord Venkateshwara, Residence of Goddess of wealth, Abode of wealth
Boy/Male
Norse
Thor's hammer.
Girl/Female
Gujarati, Indian
Worship of God; Worship
Boy/Male
Gujarati, Hindu, Indian, Kannada
Love to Gods
Girl/Female
Hindu, Indian
Invincible
Girl/Female
Tamil
Madhumita | மதà¯à®®à®¿à®¤à®¾
Full of Honey, Sweet person
CHANS ALGORITHM
CHANS ALGORITHM
CHANS ALGORITHM
CHANS ALGORITHM
CHANS ALGORITHM
n.
See Chank.
n.
The East Indian name for the large spiral shell of several species of sea conch much used in making bangles, esp. Turbinella pyrum. Called also chank chell.
a.
Consisting of little links or chains.
n.
a lynxlike animal of Asia and Africa (Lynx Lybicus).
v. i.
To chant; to recite with musical tones.
n.
Singing, esp. as a chant is sung.
p. pr. & vb. n.
of Chant
n.
Fetters; chains; handcuffs; manacles.
n. & v.
See Chant.
n. pl.
See Ant/cians.
v. i.
To sing, as in reciting a chant.
n.
Any confused or disordered collection or state of things; a confused mixture; confusion; disorder.
imp. & p. p.
of Chant
a.
Resembling chaos; confused.
n. pl.
The jaws, or the fleshy parts about them. See Chap.
n.
One who chants; a singer or songster.
v. t.
To sing or recite after the manner of a chant, or to a tune called a chant.
n.
A chank shell (Turbinella pyrum); also, a shell bracelet or necklace made in India from the chank shell.
n. pl.
The lower chaps or jaw.