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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
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
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. In 1988, it was published by the Chudnovsky
Chudnovsky_algorithm
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
Generalization of linear programming
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
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
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
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
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
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
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
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
Technological phenomenon with social implications
Algorithmic bias describes the systematic and repeatable harmful tendency in a computerized sociotechnical system to create "unfair" outcomes, such as
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
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
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
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
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
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
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
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)
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
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
contributions to the development of efficient localizaiton and tracking algorithms. "2016 elevated fellow" (PDF). IEEE Fellows Directory. Archived from the
Yiu_Tong_Chan
Problem in computational complexity theory
computation (Erickson 1999). It was conjectured that any deterministic algorithm for the 3SUM requires Ω ( n 2 ) {\displaystyle \Omega (n^{2})} time. In
3SUM
Machine learning method to transfer knowledge from a large model to a smaller one
models, as done in model compression. The Optimal Brain Damage (OBD) algorithm is as follows: Do until a desired level of sparsity or performance is
Knowledge_distillation
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
Subfield of computational complexity theory
central problems whose best known algorithms are conjectured to be optimal; under these conjectures, the best known algorithms for many problems across seemingly
Fine_grained_complexity
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
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
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
Sphere that contains a set of objects
practicality in higher dimensions. A more recent deterministic algorithm of Timothy Chan runs in O(d(12+o(1))dn), again reducing to O(n) time with fixed
Bounding_sphere
Chinese 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
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
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
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
Form of radar used to create images of landscapes
lenses of conical, cylindrical and spherical shape. The Range-Doppler algorithm is an example of a more recent approach. Synthetic-aperture radar determines
Synthetic-aperture_radar
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
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
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
OV in complexity theory
pairwise dot product algorithm deteriorates. This is due to the bit-parallel and combinatorial techniques used by these algorithms become ineffective as
Orthogonal_vectors_problem
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
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)
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
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
My_Girlfriend's_Friend
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
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
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
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
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
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
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
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
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
Number divisible only by 1 and itself
tests whether n is a multiple of any integer between 2 and n. Faster algorithms include the Miller–Rabin primality test, which is fast but has a small
Prime_number
Artificial intelligence division of Meta Platforms
team hires Vladimir Vapnik, father of the popular support vector machine algorithm". VentureBeat. November 25, 2014. Archived from the original on November
Meta_Superintelligence_Labs
American multinational technology conglomerate
and marketers, Amazon does not release the details of its sales rank algorithm. Some companies analyze Amazon sales data to generate sales estimates
Amazon_(company)
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
Suicide committed during a livestream
react to them. The lack of instant moderation, the nature of distribution algorithms, and delays in moderation responses make live streams particularly vulnerable
Livestreamed_suicide
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
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 market making firm
further claimed that Jane Street raked in Rs 36,000 crore from undetected algorithmic trading. Jane Street denied all wrongdoing, stating it was basic index
Jane_Street_Capital
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)
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
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
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
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
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)
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!
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
Internal document leak
was fully aware that harmful content was being pushed through Facebook algorithms reaching young users. The types of content included posts promoting anorexia
2021_Facebook_leak
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
Computational biologist
including energy functions, sampling algorithms, and molecules to rewire cellular control circuits. She was an inaugural Chan Zuckerberg Biohub investigator
Tanja_Kortemme
General-purpose mobile robot
Some of the most notable results of the project include the A* search algorithm, the Hough transform, and the visibility graph method.[citation needed]
Shakey_the_robot
Thai rapper and singer (born 1997)
of 2020 by Launchmetrics according to their Media Impact Value (MIV) algorithm, with the announcement of the partnership becoming MAC Cosmetics' top-branded
Lisa_(rapper)
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
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)
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
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
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
Open platform for multi-objective optimization
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
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
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
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
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
The Journey of a Dark Elf with Fading Powers
The_Journey_of_a_Dark_Elf_with_Fading_Powers
Type of halftoning
error diffusion is classified as an area operation, because what the algorithm does at one location influences what happens at other locations. This
Error_diffusion
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
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
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
biostatistics applications and methods, including the expectation–maximization algorithm. Scholia has a profile for Nan Laird (Q6962218). DerSimonian, R.; Laird
Nan_Laird
Sequence of data points over time
doi:10.1214/12-AOS1010. Chu, Y. J.; Chan, S. C.; Zhang, Z. G.; Tsui, K. M. (May 2012). "A new recursive algorithm for time-varying autoregressive (TVAR)
Time_series
Partitioning a digital image into segments
to create 3D reconstructions with the help of geometry reconstruction algorithms like marching cubes. Some of the practical applications of image segmentation
Image_segmentation
Deep learning library
that builds upon optimised, low-level implementations of deep learning algorithms and architectures, such as the Transformer, or SGD. Notably, this API
PyTorch
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
travel, tourism, insurance
CHANS ALGORITHM
CHANS ALGORITHM
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CHANS ALGORITHM
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CHANS ALGORITHM
CHANS ALGORITHM
travel, tourism, insurance