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Theory that states that concentrating industries in specific areas has advantages
Cluster theory is an economic theory of strategy where the concentration of specialized industries in an area allows greater economic activity to take
Cluster_theory
Method for approximating many-body systems
valence-universal multi-reference coupled cluster approaches. The wavefunction of the coupled-cluster theory is written as an exponential ansatz: | Ψ ⟩
Coupled_cluster
Account of natural kinds in philosophy of science
Homeostatic property cluster theory (HPC theory) is an account of natural kinds in the philosophy of science, introduced by Richard Boyd as a non-essentialist
Homeostatic property cluster theory
Homeostatic_property_cluster_theory
Topics referred to by the same term
complete graphs Clusterable graph, in balance theory Cluster algebra, a class of commutative rings used in representation theory Cluster expansion, a technique
Cluster
High-temperature expansion in statistical mechanics
In statistical mechanics, the cluster expansion (also called the high temperature expansion or hopping expansion) is a power series expansion of the partition
Cluster_expansion
Indian theoretical chemist
size-extensivity and compactness. He developed a linear response theory based on coupled cluster formalism (CCLRT), analogous to SAC-CI, in which the concept
Debashis_Mukherjee
Area for development of industry
companies through these external economies . On this, Michael Porter's cluster theory concentrates on how affiliated companies, suppliers, service providers
Industrial_park
Mathematical theory on behavior of connected clusters in a random graph
the network of small, disconnected clusters merge into significantly larger connected, so-called spanning clusters. A representative question (and the
Percolation_theory
Polish-born American physical chemist
nuclei, including methods based on coupled cluster theory, mathematical methods of chemistry and physics, and theory of intermolecular forces. His group is
Piotr_Piecuch
Higher release of Calcium in cells
thus ending the spark. This theory suggests that the RyRs can comminicate their open and closed states across the cluster, perhaps via their physical
Calcium_sparks
Geographic concentration of related businesses
example of cluster with post-Fordist flexible specialization. However, Silicon Valley has been most influential in cluster theory as well as cluster policies
Business_cluster
1980 philosophy book by Saul Kripke
of the causal theory of reference. One of his arguments against the cluster theory of names revolves around the fact that the theory's theses cannot be
Naming_and_Necessity
Vector quantization algorithm minimizing the sum of squared deviations
clusters (between-cluster sum of squares, BCSS). This deterministic relationship is also related to the law of total variance in probability theory.
K-means_clustering
Set of computers configured in a distributed computing system
cluster is a group of autonomous computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters
Computer_cluster
Grouping a set of objects by similarity
by Cattell beginning in 1943 for trait theory classification in personality psychology. The notion of a "cluster" cannot be precisely defined, which is
Cluster_analysis
Computational quantum mechanical modelling method to investigate electronic structure
wavefunction-based methods like configuration interaction or coupled cluster theory). In the current DFT approach it is not possible to estimate the error
Density_functional_theory
Indian Theoretical Chemist
cluster-based methods of quantum chemistry. He also developed expectation value and the response properties to multi-reference coupled cluster theory
Sourav_Pal
dynamics with means of Coupled Cluster Theory. Ove Christiansen made important contributions to electronic structure theory by introducing the CC2 and CC3
Ove_Christiansen
Method to determine the electronic structure of strongly correlated materials
Dynamical mean-field theory (DMFT) is a method to determine the electronic structure of strongly correlated materials. In such materials, the approximation
Dynamical_mean-field_theory
Density-based data clustering algorithm
Robert F. Ling published a closely related algorithm in "The Theory and Construction of k-Clusters" in The Computer Journal with an estimated runtime complexity
DBSCAN
American philosophy professor
natural kinds. With Thomas Reydon he has argued that homeostatic property cluster theory both omits kinds that scientific classifications recognise and admits
Marc_Ereshefsky
Chemical compound
DFT+U, the GW approximation, self-interaction corrected DFT, or coupled cluster theory, all recover the band gap with significantly improved accuracy. It has
Manganese(II)_oxide
Type of random graph
In statistical mechanics, probability theory, graph theory, etc. the random cluster model is a random graph that generalizes and unifies the Ising model
Random_cluster_model
density functional theory, MCSCF, coupled cluster theory at non-relativistic level and 4-component relativistic Hartree–Fock theory. Although most functions
PySCF
Locality condition in quantum field theory
the cluster decomposition property, together with Lorentz invariance and quantum mechanics, inevitably lead to quantum field theory. String theory satisfies
Cluster_decomposition
Topics referred to by the same term
graph theory: The formation of clusters of linked nodes in a network, measured by the clustering coefficient Correlation clustering, a way of clustering nodes
Clustering
excited states. Bartlett, R. J. (1981). "Many-Body Perturbation Theory and Coupled Cluster Theory for Electron Correlation in Molecules". Annual Review of Physical
Size consistency and size extensivity
Size_consistency_and_size_extensivity
Combining multiple simulation methods
a density functional theory method such as B3LYP and sometimes the QCISD(T) method in step 2 is replaced by the coupled cluster method CCSD(T). The G2(+)
Quantum chemistry composite methods
Quantum_chemistry_composite_methods
Used to compare clustering when variation of mutual information is employed
probability theory and information theory, adjusted mutual information, a variation of mutual information may be used for comparing clusterings. It corrects
Adjusted_mutual_information
Method of partitioning data points into groups based on their similarity
Clustering is the problem of partitioning data points into groups based on similarity or dissimilarity. Correlation clustering is a clustering framework
Correlation_clustering
Hypothetical invisible cosmic material
position in galactic collisions, the motion of galaxies within galaxy clusters, and cosmic microwave background anisotropies. Dark matter is thought to
Dark_matter
Emergency management theory
crises have been identified by Coombs: the victim cluster, the accidental cluster, and the intentional cluster. Coombs created his experimentally based SCCT
Situational crisis communication theory
Situational_crisis_communication_theory
Canadian chemist (1935–2023)
collaborative work with Jiří Čížek on coupled cluster theory. Paldus and Čížek adapted the many-body coupled cluster method to many-electron systems, thus making
Josef_Paldus
Topics referred to by the same term
Crook County School District, Oregon Coupled Cluster Singles and Doubles – a method in coupled cluster theory Centre pour la communication scientifique directe
CCSD
Graph made from disjoint union of complete graphs
graph theory, a branch of mathematics, a cluster graph is a graph formed from the disjoint union of complete graphs. Equivalently, a graph is a cluster graph
Cluster_graph
American chemist
and his coworkers were the first to formulate and implement coupled cluster theory with all single and double excitation operators (CCSD) in 1982, followed
Rodney_J._Bartlett
Radioactive decay by emitting a nucleus
— Encyclopædia Britannica, Usually the theory explains an already experimentally observed phenomenon. Cluster decay is one of the rare examples of phenomena
Cluster_decay
American chemist
Scuseria has made contributions to density functional theory, coupled cluster theory and the theory of carbon nanomaterials. Recent research thrusts in
Gustavo_Scuseria
Two colliding clusters of galaxies in constellation Carina
The Bullet Cluster (1E 0657-56) consists of two colliding clusters of galaxies. Strictly speaking, the name Bullet Cluster refers to the smaller subcluster
Bullet_Cluster
French economist
entrepreneurship theory and the market process, cluster theory, economic development, and institutional economics. He is the author of An Entrepreneurial Theory of
Frédéric_Sautet
Category of computational quantum chemistry technique
state perturbation theory (NEVPT) Complete active space perturbation theory (CASPTn) State universal multi-reference coupled-cluster theory (SUMR-CC) The simplest
Ab initio quantum chemistry methods
Ab_initio_quantum_chemistry_methods
Hartree–Fock, MP2, MCSCF and coupled cluster theories. Version 2.0 of DALTON added support for density functional theory calculations. There are many authors
Dalton_(program)
Quality measure in cluster analysis
Silhouette is a method of interpretation and validation of consistency within clusters of data. The technique provides a succinct graphical representation of
Silhouette_(clustering)
Jeziorski, B. (1 March 1993). "Application of Hilbert-space coupled-cluster theory to simple (H2)2 model systems: Planar models". Physical Review A. 47
State-universal coupled cluster
State-universal_coupled_cluster
Spherical collection of stars
A globular cluster is a spheroidal conglomeration of stars that is bound together by gravity, with a higher concentration of stars towards its center
Globular_cluster
Statistical method in data analysis
hierarchical clustering (also called hierarchical cluster analysis or HCA) is a method of cluster analysis that seeks to build a hierarchy of clusters. Strategies
Hierarchical_clustering
Measure of how connected and clustered a node is in its graph
In graph theory, a clustering coefficient is a measure of the degree to which nodes in a graph tend to cluster together. Evidence suggests that in most
Clustering_coefficient
Topic in abstract algebra
all R-modules. From the theory of cluster algebras came the definition of cluster category (from Buan et al. (2006)) and cluster tilted algebra (Buan, Marsh
Tilting_theory
Type of prime number
In number theory, a cluster prime is a prime number p such that every even positive integer k ≤ p − 3 can be written as the difference between two prime
Cluster_prime
Light bending by mass between source and observer
A gravitational lens is matter, such as a cluster of galaxies or a point particle, in sufficient quantity and density to bend light noticeably from a
Gravitational_lens
Neurological disorder
Cluster headache is a neurological disorder characterized by episodes of severe headaches on one side of the head, typically around the eye and temple
Cluster_headache
Largest known gravitationally bound object in universe; aggregation of galaxies
and Moffat use a theory of modified gravity to explain X-ray cluster masses without dark matter. Observations of the Bullet Cluster are the strongest
Galaxy_groups_and_clusters
Hartree–Fock theory, multireference configuration interaction, finite-order Møller–Plesset perturbation theory, and coupled cluster theory.[citation needed]
Full configuration interaction
Full_configuration_interaction
Astronomical structure
A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by
Galaxy_cluster
Microelectronics business model
Servitization, IT-ization and Innovation Models: Two-stage Industrial Cluster Theory. Routledge. pp. 34–. ISBN 978-0-415-63945-3. "Pure-Play Foundry Market
Foundry_model
Sampling methodology in statistics
In statistics, cluster sampling is a sampling plan used when mutually homogeneous yet internally heterogeneous groupings are evident in a statistical
Cluster_sampling
MP4), configuration interaction (CISD, CISDT, CISDTQ), and coupled cluster theory (CCSD, CCSDT, CCSDTQ, EOMCCSD, EOMCCSDT, EOMCCSDTQ). The Tensor Contraction
NWChem
Electron counting rules
electron pair theory (PSEPT) provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron
Polyhedral skeletal electron pair theory
Polyhedral_skeletal_electron_pair_theory
Group of stars
distribution of globular clusters. Until the mid-1990s, globular clusters were the cause of a great mystery in astronomy, as theories of stellar evolution
Star_cluster
Cluster of water molecules held together through hydrogen bonding
In chemistry, a water cluster is a discrete hydrogen bonded assembly or cluster of molecules of water. Many such clusters have been predicted by theoretical
Water_cluster
Problem in natural language processing and information retrieval
achieve the best results with differential cluster labeling. In the fields of probability theory and information theory, mutual information measures the degree
Cluster_labeling
Social structure made up of a set of social actors
social psychology, sociology, statistics, and graph theory. Georg Simmel authored early structural theories in sociology emphasizing the dynamics of triads
Social_network
Type of clustering of data points
clustering (also referred to as soft clustering or soft k-means) is a form of clustering in which each data point can belong to more than one cluster
Fuzzy_clustering
Agglomerative hierarchical clustering method
single-linkage clustering is one of several methods of hierarchical clustering. It is based on grouping clusters in bottom-up fashion (agglomerative clustering), at
Single-linkage_clustering
Hypothesis proposing a modification of Newton's laws
modified gravity theories fail to account for it. However, this study by Clowe et al. made no attempt to analyze the Bullet Cluster using MOND or any
Modified_Newtonian_dynamics
Czech chemist (1938–2024)
June 2021. Zhang, Igor Ying; Grüneis, Andreas (June 5, 2019). "Coupled Cluster Theory in Materials Science". Frontiers in Materials. 6: 123. arXiv:2004.06424
Jiří_Čížek
Russian mathematician
Hoffman, Yanpeng Li: Langlands Duality and Poisson-Lie Duality via Cluster Theory and Tropicalization, Arxiv 2018 "Anton Alekseev, Professeur ordinaire"
Anton Alekseev (mathematician)
Anton_Alekseev_(mathematician)
Type of star cluster
An open cluster is a type of star cluster made of tens to a few thousand stars that were formed from the same giant molecular cloud and have roughly the
Open_cluster
State of matter at low temperatures
including: models with vortex rings, hard-sphere models, and Gaussian cluster theories. Landau thought that vorticity entered superfluid helium-4 by vortex
Superfluid_helium-4
Clustering methods
In multivariate statistics, spectral clustering techniques make use of the spectrum (eigenvalues) of the similarity matrix of the data to perform dimensionality
Spectral_clustering
Attraction of masses and energy
and fusing to form stars. At larger scales this resulted in galaxies and clusters, so gravity is a primary driver for the large-scale structures in the universe
Gravity
System property to handle growing work
storage cluster size which guarantees full data consistency, meaning there is only ever one valid version of stored data in the whole cluster, independently
Scalability
Fourteenth letter in the Greek alphabet
fourteenth letter of the Greek alphabet, representing the voiceless consonant cluster [ks]. Its name is pronounced [ksi] in both Ancient Greek and Modern Greek
Xi_(letter)
View that entities have identifying attributes
philosophy of biology is homeostatic property cluster theory, on which a species is characterised by a cluster of properties whose co-occurrence is maintained
Essentialism
Psychological ethological theory
avoidant attachment style, and no cluster B disorder was associated with fearful avoidant attachment. Attachment theory has been of special interest within
Attachment_theory
Concept in chemistry
Grüneis, Andreas (28 December 2021). "Surface science using coupled cluster theory via local Wannier functions and in-RPA-embedding: The case of water
Intrinsic_bond_orbitals
Dense musical chord
A tone cluster is a musical chord comprising at least three adjacent tones in a scale. Prototypical tone clusters are based on the chromatic scale and
Tone_cluster
Attributing events to improbable causes
Moyer, Melinda Wenner (1 March 2019). "People Drawn to Conspiracy Theories Share a Cluster of Psychological Features". Scientific American. Retrieved 16 October
Conspiracy_theory
A Cluster diagram or clustering diagram is a general type of diagram, which represents some kind of cluster. A cluster in general is a group or bunch of
Cluster_diagram
Measure of positive and negative charges
substantial for even simple systems like the ammonia molecule. Coupled cluster theory (especially CCSD(T)) can give very accurate dipole moments, although
Electric_dipole_moment
Computational chemistry program
characteristics such as density functional theory, second–order Møller-Plesset and coupled cluster theory. Aside from energies and structures, an assortment
TURBOMOLE
Theoretical chemist
configuration interaction calculations; and major contributions to coupled cluster theory. He is one of the founding authors of the COLUMBUS suite of ab initio
Isaiah_Shavitt
Electromagnetic phenomenon
substantial for even simple systems like the ammonia molecule. Coupled cluster theory (especially CCSD(T)) can give very accurate dipole moments, although
Dipole
Open-source container software
development of Kubernetes was inspired by Google's Borg cluster manager and based on Promise Theory. Many of its top contributors had previously worked on
Kubernetes
RNA family
Stadler BM; Stadler PF (August 2007). "Evolution of the vertebrate Y RNA cluster". Theory Biosci. 126 (1): 9–14. CiteSeerX 10.1.1.189.4108. doi:10.1007/s12064-007-0003-y
SbRNA
Consensus algorithm
way to distribute a state machine across a cluster of computing systems, ensuring that each node in the cluster agrees upon the same series of state transitions
Raft_(algorithm)
Method for describing the electronic structure of molecules using quantum mechanics
Coupled cluster Frontier molecular orbital theory Ligand field theory (MO theory for transition metal complexes) Møller–Plesset perturbation theory Quantum
Molecular_orbital_theory
American physical chemist (1947–2016)
Branka M.; Chandler, David (1975). "New type of cluster theory for molecular fluids: Interaction site cluster expansion". The Journal of Chemical Physics
Branka_Ladanyi
Cluster analysis problem
values. Rate distortion theory has been applied to choosing k called the "jump" method, which determines the number of clusters that maximizes efficiency
Determining the number of clusters in a data set
Determining_the_number_of_clusters_in_a_data_set
accuracy of the corrected energies can be similar to results from coupled cluster theory calculations. The Davidson correction does not give information about
Davidson_correction
Field of chemistry
organic synthesis, which employs many organometallic catalysts and reagents. cluster chemistry, compounds with several metals bound together with metal–metal
Inorganic_chemistry
Overview of and topical guide to machine learning
Soft output Viterbi algorithm Solomonoff's theory of inductive inference SolveIT Software Spectral clustering Spike-and-slab variable selection Statistical
Outline_of_machine_learning
Mixing property of Markov chains and graphs
In theoretical computer science, graph theory, and mathematics, the conductance is a parameter of a Markov chain that is closely tied to its mixing time
Conductance_(graph_theory)
Scientific study of digital information
Information theory is the mathematical study of the quantification, storage, and communication of a particular type of mathematically defined information
Information_theory
Erroneously seeing patterns in randomness
The clustering illusion is the tendency to erroneously consider the inevitable "streaks" or "clusters" arising in small samples from random distributions
Clustering_illusion
Physical theory of the cosmos
gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual
Big_Bang
Canadian filmmaker and web documentarian
at the University of Waterloo. He is known for introducing Coupled cluster theory. Budds, Diana. "7 Years In The Making, This Documentary Reveals The
Katerina_Cizek
2026 conspiracy theory
In 2026, a conspiracy theory emerged alleging that the deaths or disappearances of several people, some described online as scientists tied to classified
Missing scientists conspiracy theory
Missing_scientists_conspiracy_theory
Computational chemistry software package
theory (DFT) including time-dependent DFT (TDDFT), Møller–Plesset perturbation theory (MP2), coupled cluster (CC), equation-of-motion coupled-cluster
Q-Chem
Binary operation combining the vertex and edge sets of two graphs
In graph theory, a branch of mathematics, the disjoint union of graphs is an operation that combines two or more graphs to form a larger graph. It is analogous
Disjoint_union_of_graphs
CLUSTER THEORY
CLUSTER THEORY
Girl/Female
Assamese, Celebrity, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Sikh, Tamil, Traditional
Flame; Lustre; Glow; Shine; Luster; Nice
Girl/Female
Australian, Finnish
Bunch; Cluster
Surname or Lastname
English and Scottish
English and Scottish : variant of Lister.
Surname or Lastname
English
English : possibly from Middle English cloutere, clutere, an occupational name for a cobbler or patcher, from an agent derivative of cloute, clut(e) ‘patch’.Possibly an altered form of German Klutterer, an occupational name for a traveling entertainer, Middle High German kluterære, or a shortened form of Klüttermann ‘clodhopper’, a nickname for a peasant.
Girl/Female
British, English, Finnish
Bunch; Cluster
Surname or Lastname
English
English : habitational name from the city of Gloucester. The place originally bore the British name Glēvum (apparently from a cognate of Welsh gloyw ‘bright’), to which was added the Old English element ceaster ‘Roman fort or walled city’ (Latin castra ‘legionary camp’).
Surname or Lastname
English
English : metonymic occupational name for a grower or seller of costards (Anglo-Norman French, from coste ‘rib’), a variety of large apples, so called for their prominent ribs. In some cases, it may have been a nickname (from the same word) for a person with an apple-shaped (i.e. round) head.Dutch : status name for a churchwarden, from Late Latin custor ‘guard’, ‘warden’.Variant spelling of German Koster.This name is recorded in Beverwijck in New Netherland (Albany, NY) in the mid 17th century.
Male
English
English slang term for someone who breaks things transferred to forename use, originally derived from the verb bust, BUSTER means "to break, smash," hence "breaker, destroyer, smasher."
Male
Gaelic
Gaelic form of Latin Alexandrus, ALISTER means "defender of mankind."
Male
English
English surname transferred to forename use, from the city name Leicester which was recorded in the 10th century as Ligora caester "Ligora's fort." Ligora is related to Liguria, a very old place name of obscure origin, dating back to pre-Roman times. There has been some speculation concerning a possible connection between Ligora/Liguria and Celtic Lug, LESTER means "oath."
Male
English
 English surname transferred to forename use, derived from the city name Chester, from an Old English form of Latin castra, CHESTER means "legionary camp."Â
Male
Gaelic
Gaelic form of Latin Alexandrus, ALASTER means "defender of mankind."
Surname or Lastname
English (Devon)
English (Devon) : occupational name for a treasurer or accountant, from Middle English counter (from Old French conteor).
Surname or Lastname
English
English : habitational name from Chester, the county seat of Cheshire, or from any of various smaller places named with this word (as for example Little Chester in Derbyshire or Chester le Street in County Durham), which is from Old English ceaster ‘Roman fort or walled city’ (Latin castra ‘legionary camp’).
Surname or Lastname
English
English : habitational name from Leicester, named in Old English from the tribal name Ligore (itself adapted from a British river name) + Old English ceaster ‘Roman fort or walled city’ (Latin castra ‘legionary camp’).English (of Norman origin) : habitational name from Lestre in Normandy.English and Scottish : variant of Lister.
Male
English
Anglicized form of Gaelic Alaster, ALYSTER means "defender of mankind."
Surname or Lastname
Americanized spelling of German Köster or Küster ‘sexton’ (see Kuster).English
Americanized spelling of German Köster or Küster ‘sexton’ (see Kuster).English : variant of Coster.The American military officer George Custer (1839–76) was a descendant of a German officer from Hesse by the name of Küster.
Male
Gaelic
Gaelic form of Latin Alexandrus, ALESTER means "defender of mankind."
Surname or Lastname
English and North German
English and North German : metonymic occupational name for a plasterer, from Middle English, Middle Low German plaster (from Latin emplastrum ‘(wound) plaster’ (originally a paste), from Greek emplastron, a derivative of emplassein ‘to shape or form’; the term was carried over into building terminology to mean ‘bonding agent’).English : habitational name from any of various places called Plaistow (in East London, Derbyshire, Sussex, and elsewhere), from Old English plegestÅw ‘place where people gather for sport or play’. This can also be a variant of Plaisted (through interchangeable use of the Old English elements stÅw and stede, both meaning ‘place’, in earlier times).German and Ashkenazic Jewish (Pflaster) : from Middle High German pflaster (German Pflaster, from Latin plastrum) ‘street pavement’, ‘pavement’, cognate with 1.
Boy/Male
Hebrew, Hindu, Indian, Marathi
Grape Cluster
CLUSTER THEORY
CLUSTER THEORY
CLUSTER THEORY
CLUSTER THEORY
CLUSTER THEORY
CLUSTER THEORY
CLUSTER THEORY