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Function of the coefficients of a polynomial that gives information on its roots
In mathematics, the discriminant of a polynomial is a quantity that depends on the coefficients and allows deducing some properties of the roots without
Discriminant
Method used in statistics, pattern recognition, and other fields
Linear discriminant analysis (LDA), normal discriminant analysis (NDA), canonical variates analysis (CVA), or discriminant function analysis is a generalization
Linear_discriminant_analysis
Topics referred to by the same term
Fundamental discriminant Modular discriminant Modified Maddrey's discriminant function Discriminant validity Discriminant analysis Kernel Fisher discriminant analysis
Discriminant_(disambiguation)
Term in statistics and psychology
In psychology, discriminant validity tests whether concepts or measurements that are not supposed to be related are actually unrelated. Campbell and Fiske
Discriminant_validity
Measures the size of the ring of integers of the algebraic number field
In mathematics, the discriminant of an algebraic number field is a numerical invariant that, loosely speaking, measures the size of the (ring of integers
Discriminant of an algebraic number field
Discriminant_of_an_algebraic_number_field
statistics, kernel Fisher discriminant analysis (KFD), also known as generalized discriminant analysis and kernel discriminant analysis, is a kernelized
Kernel Fisher discriminant analysis
Kernel_Fisher_discriminant_analysis
Field (mathematics) generated by the square root of an integer
important. For a nonzero square free integer d {\displaystyle d} , the discriminant of the quadratic field K = Q ( d ) {\displaystyle K=\mathbf {Q} ({\sqrt
Quadratic_field
Finite extension of the rationals
determinant of this is 1304 = 23·163, the field discriminant; in comparison the root discriminant, or discriminant of the polynomial, is 5216 = 25·163. Mathematicians
Algebraic_number_field
Methodological parameter in the social sciences
should be related, are in fact related. Convergent validity, along with discriminant validity, is a subtype of construct validity. Convergent validity can
Convergent_validity
In mathematics, the conductor–discriminant formula or Führerdiskriminantenproduktformel, introduced by Hasse (1926, 1930) for abelian extensions and by
Conductor–discriminant formula
Conductor–discriminant_formula
Polynomial equation of degree two
roots. In this case the discriminant determines the number and nature of the roots. There are three cases: If the discriminant is positive, then there
Quadratic_equation
fields is ordered by discriminant, then the proportion of cubic fields which are cyclic approaches zero as the bound on the discriminant approaches infinity
Cubic_field
Matrix of second derivatives
Hessian at x {\displaystyle \mathbf {x} } is called, in some contexts, a discriminant. If this determinant is zero then x {\displaystyle \mathbf {x} } is called
Hessian_matrix
Polynomial equation of degree 3
may not have positive solutions. He understood the importance of the discriminant of the cubic equation to find algebraic solutions to certain types of
Cubic_equation
Algebraic curve in mathematics
the discriminant is useful in a more advanced study of elliptic curves. The real graph of a non-singular curve has two components if its discriminant is
Elliptic_curve
{\displaystyle i} . The average variance extracted has often been used to assess discriminant validity based on the following "rule of thumb": the positive square
Average_variance_extracted
Process of reducing the number of random variables under consideration
stage based on backpropagation. Linear discriminant analysis (LDA) is a generalization of Fisher's linear discriminant, a method used in statistics, pattern
Dimensionality_reduction
Optimal Discriminant Analysis (ODA) and the related classification tree analysis (CTA) are exact statistical methods that maximize predictive accuracy
Optimal discriminant analysis and classification tree analysis
Optimal_discriminant_analysis_and_classification_tree_analysis
Criterion for a celestial body to be considered a planet
out the small bodies in its orbital zone. Stern and Levison used this discriminant to separate the gravitationally rounded, Sun-orbiting bodies into überplanets
Clearing_the_neighbourhood
Mathematical algorithm
Multiple Discriminant Analysis (MDA) is a multivariate dimensionality reduction technique. It has been used to predict signals as diverse as neural memory
Multiple discriminant analysis
Multiple_discriminant_analysis
Medical diagnostic method
Maddrey's discriminant function (DF) is the traditional model for evaluating the severity and prognosis in alcoholic hepatitis and evaluates the efficacy
Modified Maddrey's discriminant function
Modified_Maddrey's_discriminant_function
Statistics dataset
multiple measurements in taxonomic problems as an example of linear discriminant analysis. It is sometimes called Anderson's Iris data set because Edgar
Iris_flower_data_set
Class of mathematical functions
q=e^{\pi i\tau }} is the nome. The modular discriminant Δ {\displaystyle \Delta } is defined as the discriminant of the characteristic polynomial of the
Weierstrass_elliptic_function
Statistical classifier in machine learning
complex separating surfaces. Quadratic discriminant analysis (QDA) is closely related to linear discriminant analysis (LDA), where it is assumed that
Quadratic_classifier
Quadratic homogeneous polynomial in two variables
coefficients are coprime. If a form's discriminant is a fundamental discriminant, then the form is primitive. Discriminants satisfy Δ ≡ 0 , 1 ( mod 4 ) . {\displaystyle
Binary_quadratic_form
Generalization of the one-dimensional normal distribution to higher dimensions
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Multivariate normal distribution
Multivariate_normal_distribution
Index that describes the performance of a dichotomous diagnostic test
statistic is referred to as Peirce Skill Score (PSS), Hanssen–Kuipers Discriminant (HKD), or True Skill Statistic (TSS). Youden's J statistic is J = sensitivity
Youden's_J_statistic
Concept in algebra
originated in 1845 and is often denoted "Det". This definition is a discriminant for a singular point on a scalar valued multilinear map. Cayley's first
Hyperdeterminant
The Discriminant Book (German: Kenngruppenbuch; literally: Groups to identify the key to the receiver) shortened to K-Book (K. Buch), and also known as
Discriminant_Book
1 (discriminant 49) x3 − 3x − 1 (discriminant 81) x3 − x2 − 3x + 1 (discriminant 148) x3 − x2 − 4x − 1 (discriminant 169) x3 − 4x − 1 (discriminant 229)
List of number fields with class number one
List_of_number_fields_with_class_number_one
discriminant analysis (LDA), Basic perceptron, Elastic Net, logistic regression, (Kernel) Support Vector Machines (SVM), Diagonal Linear Discriminant
Mlpy
For any integer N there are only finitely many number fields with discriminant at most N
finite field extensions K of the rational numbers Q, such that the discriminant of K/Q is at most N. The theorem is named after Charles Hermite and Hermann
Hermite–Minkowski_theorem
Finite dimensional algebra over a field whose central elements are that field
In ring theory and related areas of mathematics a central simple algebra (CSA) over a field K is a finite-dimensional associative K-algebra A that is simple
Central_simple_algebra
Chinese American statistician (1936-2020)
for his contributions to statistical inference, multivariate analysis, discriminant analysis, and sample survey methodology. Han was born in Hunan, China
Chien-Pai_Han
Measure of indicator representativeness
interest and test scores? External – Does the test have convergent, discriminant, and predictive qualities? Generalizability – Does the test generalize
Construct_validity
Cubic equation unsolvable in real radicals
the three solutions are real and distinct, or, equivalently, when the discriminant is positive. It was only in 1843 that Pierre Wantzel proved that there
Casus_irreducibilis
Type of prime number conjectured to exist
discriminant D = P2 − 4Q. In this definition, the prime p should be odd and not divide D. It is conjectured that for every fundamental discriminant D
Wall–Sun–Sun_prime
Family of continuous probability distributions
p. 367) distinguished two main cases, determined by the sign of the discriminant (and hence the number of real roots) of the quadratic function B ( x
Pearson_distribution
Statistical technique used to examine construct validity
developed by Campbell and Fiske (1959). It organizes convergent and discriminant validity evidence for comparison of how a measure relates to other measures
Multitrait-multimethod_matrix
Formula that provides the solutions to a quadratic equation
4 a c {\displaystyle \textstyle \Delta =b^{2}-4ac} is known as the discriminant of the quadratic equation. If the coefficients a {\displaystyle a}
Quadratic_formula
Natural number
the fifth discriminant of imaginary quadratic fields with class number 5, where the 131st prime number 739 is the fifteenth such discriminant. Meanwhile
131_(number)
Model for assessing likelihood of bankruptcy
approximate size (assets). Altman applied the statistical method of discriminant analysis to a dataset of publicly held manufacturers. The estimation
Altman_Z-score
Mathematical function
\Delta (\tau )=(2\pi )^{12}\eta ^{24}(\tau )} where Δ is the modular discriminant. The presence of 24 can be understood by connection with other occurrences
Dedekind_eta_function
Species of plant
multiple measurements in taxonomic problems" as an example of linear discriminant analysis. Iris versicolor is a flowering herbaceous perennial plant,
Iris_versicolor
Mathematical configuration
of the Bhargava cube. These three quadratic forms all have the same discriminant and Manjul Bhargava proved that their composition in the sense of Gauss
Bhargava_cube
Algebra term
functions on Witt classes. Dimension mod 2 is a function on classes: the discriminant is also well-defined. The Hasse invariant of a quadratic form is again
Witt_group
power integral basis. In a monogenic field K, the field discriminant of K is equal to the discriminant of the minimal polynomial of α. Examples of monogenic
Monogenic_field
Natural number
fields by discriminant, which is 4p for Q[√p] when p is congruent to 3 modulo 4, as is the case for 79, so the entry appears at discriminant 316. "Sloane's
79_(number)
the discriminant Δ = A 0 A 2 − A 1 2 . {\displaystyle \displaystyle \Delta =A_{0}A_{2}-A_{1}^{2}.} The symbolic representation of the discriminant is 2
Symbolic_method
Listing all imaginary quadratic fields with a given class number
named after Carl Friedrich Gauss. It can also be stated in terms of discriminants. There are related questions for real quadratic fields and for the behavior
Class_number_problem
Point where the derivative of a function is zero or undefined (in certain cases)
{Disc} _{y}(f)} be the discriminant of f viewed as a polynomial in y with coefficients that are polynomials in x. This discriminant is thus a polynomial
Critical_point_(mathematics)
Automated recognition of patterns and regularities in data
is the assignment of a label to a given input value. In statistics, discriminant analysis was introduced for this same purpose in 1936. An example of
Pattern_recognition
Product of pairwise differences
is widely called the discriminant, though some sources call the Vandermonde polynomial itself the discriminant. The discriminant (the square of the Vandermonde
Vandermonde_polynomial
dimension 0; quasi-algebraically closed fields of dimension 1. Discriminant of a point The discriminant of a point refers to two related concepts relative to a
Glossary of arithmetic and diophantine geometry
Glossary_of_arithmetic_and_diophantine_geometry
On prime divisors in Fibonacci and Lucas sequences
first kind Un(P, Q) with relatively prime parameters P, Q and positive discriminant, an element Un with n ≠ 1, 2, 6 has at least one prime divisor that does
Carmichael's_theorem
Limits ideals to be checked in order to determine the class number of a number field
K. It is named for the mathematician Hermann Minkowski. Let D be the discriminant of the field, n be the degree of K over Q {\displaystyle \mathbb {Q}
Minkowski's_bound
Genus of flowering plants in the family Iridaceae
multiple measurements in taxonomic problems as an example of linear discriminant analysis. Irises are perennial plants, growing from creeping rhizomes
Iris_(plant)
Categorization of data using statistics
Fisher, in the context of two-group problems, leading to Fisher's linear discriminant function as the rule for assigning a group to a new observation. This
Statistical_classification
Field in algebraic number theory
of discriminant − 15 {\displaystyle -15} . The field L = Q ( − 3 , 5 ) {\displaystyle L=\mathbb {Q} ({\sqrt {-3}},{\sqrt {5}})} has discriminant 225
Hilbert_class_field
Russian mathematician (born 1962)
-hypergeometric functions, A {\displaystyle A} -discriminants, and hyperdeterminants, and authored Discriminants, Resultants, and Multidimensional Determinants
Mikhail_Kapranov
Machine learning paradigm
Support-vector machines Linear regression Logistic regression Naive Bayes Linear discriminant analysis Decision trees k-nearest neighbors algorithm Neural networks
Supervised_learning
American biostatistician
Investigator Award for her work Penalized Classification Using Fisher’s Linear Discriminant in 2011. Her book An Introduction to Statistical Learning won a Technometrics
Daniela_Witten
Visualization of the prime numbers
different rays. In particular, the density is highly sensitive to the discriminant of the polynomial, b2 − 16c. Conjecture F is concerned with polynomials
Ulam_spiral
Overview of and topical guide to machine learning
extraction Feature selection Independent component analysis (ICA) Linear discriminant analysis (LDA) Multidimensional scaling (MDS) Non-negative matrix factorization
Outline_of_machine_learning
Natural number
25,49), and the second smallest is (49,169,289). 49 is the smallest discriminant of a totally real cubic field. 49 and 94 are the only numbers below 100
49_(number)
Néron–Ogg–Shafarevich criterion. Ogg's formula expresses the conductor in terms of the discriminant and the number of components of the special fiber over a local field
Conductor of an elliptic curve
Conductor_of_an_elliptic_curve
Conjecture in number theory
number theory, Szpiro's conjecture relates to the conductor and the discriminant of an elliptic curve. In a slightly modified form, it is equivalent to
Szpiro's_conjecture
English mathematician (1814–1897)
"matrix" in 1850, the term "graph" in the sense of network, and the term "discriminant". He also introduced the word "totient" for Euler's totient function
James_Joseph_Sylvester
Mathematical concept
explicit formulae have been applied also to questions on bounding the discriminant of an algebraic number field, and the conductor of a number field. In
Explicit formulae for L-functions
Explicit_formulae_for_L-functions
Simultaneous observation and analysis of more than one outcome variable
original method is principal coordinates analysis (PCoA; based on PCA). Discriminant analysis, or canonical variate analysis, attempts to establish whether
Multivariate_statistics
Dynasty of ancient Egypt
analysis of crania from First Dynasty Egyptian tombs, using multiple discriminant functions". American Journal of Physical Anthropology. 87 (3): 245–254
First_Dynasty_of_Egypt
Data clustering algorithm
optimization method is directly related to Otsu's Method and Fisher's Discriminant Analysis. George F. Jenks was a 20th-century American cartographer. Graduating
Jenks natural breaks optimization
Jenks_natural_breaks_optimization
2}+\left({\frac {a}{c}}-{\frac {b^{2}}{4c^{2}}}\right)}}.} Assume that the discriminant q = b2 − 4ac is positive. In that case, define u and A by u = x + b 2
Quadratic_integral
In number theory, measure of non-unique factorization
hand for the ring of integers in an algebraic number field of small discriminant, using Minkowski's bound. This result gives a bound, depending on the
Ideal_class_group
modification of the class number of positive definite binary quadratic forms of discriminant –N, where forms are weighted by 2/g for g the order of their automorphism
Hurwitz_class_number
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Contraharmonic_mean
Statistical term
regression analysis, factor analysis, canonical correlation analysis, discriminant analysis, as well as more general families of models in the multivariate
Path_analysis_(statistics)
Decomposition of a number into a product
algorithm uses the class group of positive binary quadratic forms of discriminant Δ denoted by GΔ. GΔ is the set of triples of integers (a, b, c) in which
Integer_factorization
Measure of variation in statistics
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Standard_deviation
Psychology concept
The author of this study argued that although the four constructs lack discriminant validity they are not necessarily all conceptually equivalent as each
Need_for_cognition
Difficulties arising when analyzing data with many aspects ("dimensions")
steadily. Nevertheless, in the context of a simple classifier (e.g., linear discriminant analysis in the multivariate Gaussian model under the assumption of a
Curse_of_dimensionality
Statistical model allowing for frequent zero values
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Zero-inflated_model
Procedure to solve equations of second degree
quadratic formula and a monic polynomial with real coefficients. If the discriminant of such a polynomial is negative, then both roots of the quadratic equation
Solving quadratic equations with continued fractions
Solving_quadratic_equations_with_continued_fractions
Union data structure with enforced cases
member which existence depends -- on a certain value of the discriminant, while the -- discriminant is not the expected one, raises an error. While C only
Tagged_union
Mathematical conjecture about zeros of L-functions
field of discriminant −19, −43, −67, or −163. Odlyzko (1990) discussed how the ERH can be used to give sharper estimates for discriminants and class
Generalized Riemann hypothesis
Generalized_Riemann_hypothesis
Family of statistical methods based on sampling of available data
more precise than jackknife estimates with linear models such as linear discriminant function or multiple regression. Bootstrap aggregating (bagging) Confidence
Resampling_(statistics)
Natural number
23 is the smallest discriminant of imaginary quadratic fields with class number 3 (negated), and it is the smallest discriminant of complex cubic fields
23_(number)
Multiscale inventory of personality and psychopathology
Defensiveness Index; to assist in identifying defensive responding. Cashel Discriminant Function; to assist in identifying falsified profiles with a positive
Personality Assessment Inventory
Personality_Assessment_Inventory
Data transformation of statistics into rank
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Ranking_(statistics)
Psychological measurement
measure. Construct validity (e.g., predictive, concurrent, convergent, and discriminant validity) Good A study of the AQ-27 by Corrigan et al. in 2004 found
Attribution_Questionnaire
Medical condition
determined several clinical prediction models such as the Maddrey's Discriminant Function and the MELD score. Severe cases may be treated with glucocorticoids
Alcoholic_hepatitis
In computer vision and image processing
variance. Otsu's method is a one-dimensional discrete analogue of Fisher's discriminant analysis, is related to Jenks optimization method, and is equivalent
Otsu's_method
Canid species native to Australia
LK; Carpenter, SM (1980). "The Identity of the Dingo I. Morphological Discriminants of Dingo and Dog Skulls". Australian Journal of Zoology. 28 (4): 615–25
Dingo
Dimensional classification system for personality disorders
Alternative Model of Personality Disorders: Assessment, Convergent and Discriminant Validity, and a Look to the Future". Annual Review of Clinical Psychology
ICD-11 classification of personality disorders
ICD-11_classification_of_personality_disorders
Curve external to a family of curves in geometry
x,y)} , so the equation of the envelope can be found by setting the discriminant of F {\displaystyle F} to 0 {\displaystyle 0} (because the definition
Envelope_(mathematics)
Polynomial function of degree two
Graph of y = ax2 + bx + c, where a and the discriminant b2 − 4ac are positive, with Roots and y-intercept in red Vertex and axis of symmetry in blue Focus
Quadratic_function
Statistical model for count data
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Poisson_regression
Northern pole-star; brightest star in Ursa Minor
concluded that the photometric parallax of B does not give a useful discriminant. — Bond et al go on to find a trigonometric parallax (independent of
Polaris
Extinct genus of antilocaprids
lived in North America during the Pliocene epoch. Dental mesowear and discriminant function analysis of Hexobelomeryx fricki fossilised tooth specimens
Hexobelomeryx
Type of chart
Multivariate Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor
Bar_chart
DISCRIMINANT
DISCRIMINANT
DISCRIMINANT
DISCRIMINANT
Girl/Female
Hindu, Indian
Birth Place of Lord Krishna
Surname or Lastname
English
English : metathesized form of the occupational name Coyner.English : possibly an occupational name for a dealer in rabbits or rabbit skins, from an agent derivative of Middle English cony ‘rabbit’ (see Coney).
Girl/Female
Arabic, Australian, Muslim
Splendid
Girl/Female
Hindu
Little noble one, Solitary, Single, Wish
Boy/Male
Irish Latin
Priceless.
Boy/Male
Tamil
Sivagnana | ஸீவாகà¯à®¨à®¾à®¨à®¾
Knowledge for Shiva
Girl/Female
Muslim
Abstinent
Biblical
grace, or gift, of God
Boy/Male
Hebrew
God has taken.
Boy/Male
Tamil
Snake, Venkateswara
DISCRIMINANT
DISCRIMINANT
DISCRIMINANT
DISCRIMINANT
DISCRIMINANT
n.
The eliminant of the n partial differentials of any homogenous function of n variables. See Eliminant.