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  2. Linear separability - Wikipedia

    en.wikipedia.org/wiki/Linear_separability

    H 1 does not separate the sets. H 2 does, but only with a small margin. H 3 separates them with the maximum margin. Classifying data is a common task in machine learning. Suppose some data points, each belonging to one of two sets, are given and we wish to create a model that will decide which set a new data point will be in.

  3. Kirchberger's theorem - Wikipedia

    en.wikipedia.org/wiki/Kirchberger's_theorem

    Kirchberger's theorem is a theorem in discrete geometry, on linear separability.The two-dimensional version of the theorem states that, if a finite set of red and blue points in the Euclidean plane has the property that, for every four points, there exists a line separating the red and blue points within those four, then there exists a single line separating all the red points from all the ...

  4. Perceptron - Wikipedia

    en.wikipedia.org/wiki/Perceptron

    A binary classifier is a function which can decide whether or not an input, represented by a vector of numbers, belongs to some specific class. [1] It is a type of linear classifier , i.e. a classification algorithm that makes its predictions based on a linear predictor function combining a set of weights with the feature vector .

  5. Cover's theorem - Wikipedia

    en.wikipedia.org/wiki/Cover's_Theorem

    The left image shows 100 points in the two dimensional real space, labelled according to whether they are inside or outside the circular area. These labelled points are not linearly separable, but lifting them to the three dimensional space with the kernel trick , the points becomes linearly separable.

  6. Linear discriminant analysis - Wikipedia

    en.wikipedia.org/wiki/Linear_discriminant_analysis

    The Bayes boundary is calculated based on the true data generation parameters, the estimated boundary on the realised data points. [1] Linear discriminant analysis (LDA), normal discriminant analysis (NDA), canonical variates analysis (CVA), or discriminant function analysis is a generalization of Fisher's linear discriminant, a method used in ...

  7. Affine transformation - Wikipedia

    en.wikipedia.org/wiki/Affine_transformation

    Let X be an affine space over a field k, and V be its associated vector space. An affine transformation is a bijection f from X onto itself that is an affine map; this means that a linear map g from V to V is well defined by the equation () = (); here, as usual, the subtraction of two points denotes the free vector from the second point to the first one, and "well-defined" means that ...

  8. Separation of variables - Wikipedia

    en.wikipedia.org/wiki/Separation_of_variables

    In general, the sum of solutions to which satisfy the boundary conditions also satisfies and . Hence a complete solution can be given as Hence a complete solution can be given as u ( x , t ) = ∑ n = 1 ∞ D n sin ⁡ n π x L exp ⁡ ( − n 2 π 2 α t L 2 ) , {\displaystyle u(x,t)=\sum _{n=1}^{\infty }D_{n}\sin {\frac {n\pi x}{L}}\exp \left ...

  9. Separability - Wikipedia

    en.wikipedia.org/wiki/Separability

    Separable filter, a product of two or more simple filters in image processing; Separable ordinary differential equation, a class of equations that can be separated into a pair of integrals; Separable partial differential equation, a class of equations that can be broken down into differential equations in fewer independent variables