Kernel

Kernel may refer to:

Computing

• Kernel (image processing), a matrix used for image convolution
• Kernel (operating system), the central component of most operating systems
• Compute kernel, in GPGPU programming
• Kernel method, in machine learning
• In numerical analysis, a subroutine that performs a common numerical operation
  • In particular, a routine that is executed in a vectorized loop; see, e.g., General-purpose computing on graphics processing units § Kernels
• Kernelization, a technique for designing efficient algorithms

Mathematics

Objects

• Kernel (algebra), a general concept that includes:
  • Kernel (linear algebra), the set of all vectors which map to the zero vector
  • Kernel (category theory), in category theory
  • Kernel (set theory), the set of all pairs of elements that map to the same value
  • Equalizer (mathematics), the set of all elements where the values of two functions coincide
• Kernel of a directed graph, a subset of the vertex set of a digraph which is independent and absorbing

Functions

• Kernel (geometry), the set of points within a polygon from which the whole polygon boundary is visible
• Kernel (statistics), a weighting function used in kernel density estimation to estimate the probability density function of a random variable
• Integral kernel, a function of two variables that defines an integral transform
• Heat kernel, the fundamental solution to the heat equation on a specified domain
• Convolution kernel
• Stochastic kernel, the transition function of a stochastic process
• Transition kernel, a generalization of a stochastic kernel
• Pricing kernel, the stochastic discount factor used in mathematical finance
• Positive-definite kernel, a generalization of a positive-definite matrix
• Kernel trick, in statistics
• Reproducing kernel Hilbert space

Natural sciences

• Seed, inside the nut of most plants, especially:
  • Corn kernel
  • Palm kernel
  • Wheat kernel
• Atomic nucleus, the center of an atom

Other uses

• Kernel (digital media company), an e-commerce website
• Kernel (EP), by the band Seam
• Kernel (neurotechnology company), a developer of neural interfaces
• Kernel Fleck, a character in The Demonata series of books

People

• Brigitte Kernel (born 1959), French journalist and writer

See also

• Colonel (disambiguation)
• KERNAL, Commodore's 8-bit OS software