• Thumbnail for Heaviside step function
    The Heaviside step function, or the unit step function, usually denoted by H or θ (but sometimes u, 1 or 𝟙), is a step function named after Oliver Heaviside...
    14 KB (2,157 words) - 11:06, 13 June 2025
  • Thumbnail for Step function
    Piecewise Sigmoid function Simple function Step detection Heaviside step function Piecewise-constant valuation "Step Function". "Step Functions - Mathonline"...
    7 KB (947 words) - 18:31, 16 February 2025
  • equation for a particle with a step-like potential in one dimension. Typically, the potential is modeled as a Heaviside step function. The time-independent Schrödinger...
    11 KB (1,769 words) - 18:54, 25 May 2025
  • Thumbnail for Dirac delta function
    in 1930. However, Oliver Heaviside, 35 years before Dirac, described an impulsive function called the Heaviside step function for purposes and with properties...
    96 KB (14,230 words) - 16:33, 16 June 2025
  • Thumbnail for Step response
    step response of a system in a given initial state consists of the time evolution of its outputs when its control inputs are Heaviside step functions...
    25 KB (3,782 words) - 20:22, 11 January 2024
  • separable data. A perceptron traditionally used a Heaviside step function as its nonlinear activation function. However, the backpropagation algorithm requires...
    16 KB (1,932 words) - 18:15, 12 May 2025
  • Thumbnail for Ramp function
    the Heaviside step function with itself: R ( x ) := H ( x ) ∗ H ( x ) {\displaystyle R\left(x\right):=H(x)*H(x)} The integral of the Heaviside step function:...
    7 KB (1,005 words) - 03:45, 8 August 2024
  • Thumbnail for Sign function
    value Heaviside step function Negative number Rectangular function Sigmoid function (Hard sigmoid) Step function (Piecewise constant function) Three-way...
    16 KB (2,711 words) - 09:57, 3 June 2025
  • Thumbnail for Oliver Heaviside
    Oliver Heaviside (/ˈhɛvisaɪd/ HEH-vee-syde; 18 May 1850 – 3 February 1925) was an English mathematician and physicist who invented a new technique for...
    42 KB (4,664 words) - 19:18, 7 June 2025
  • Thumbnail for Green's function
    the Heaviside step function, J ν ( z ) {\textstyle J_{\nu }(z)} is a Bessel function, I ν ( z ) {\textstyle I_{\nu }(z)} is a modified Bessel function of...
    43 KB (5,810 words) - 23:26, 15 June 2025
  • Thumbnail for Sigmoid function
    function – Function returning minus 1, zero or plus 1 Heaviside step function – Indicator function of positive numbers Logistic regression – Statistical...
    16 KB (2,095 words) - 11:52, 24 May 2025
  • Thumbnail for Indicator function
    Free variables and bound variables Heaviside step function Identity function Iverson bracket Kronecker delta, a function that can be viewed as an indicator...
    17 KB (2,543 words) - 13:47, 8 May 2025
  • Thumbnail for Boxcar function
    b] and H ( x ) {\displaystyle H(x)} is the Heaviside step function. As with most such discontinuous functions, there is a question of the value at the transition...
    2 KB (203 words) - 01:21, 15 November 2024
  • Thumbnail for Activation function
    )=U(a+\mathbf {v} '\mathbf {b} )} , where U {\displaystyle U} is the Heaviside step function. If a line has a positive slope, on the other hand, it may reflect...
    25 KB (1,960 words) - 00:09, 19 June 2025
  • in economic models The ordinal collapsing function developed by Solomon Feferman The Heaviside step function In pharmacology, the fraction of ligand bound...
    17 KB (2,014 words) - 23:17, 12 May 2025
  • transform, where the definition of the function being transformed is multiplied by the Heaviside step function. The bilateral Laplace transform F(s) is...
    75 KB (9,447 words) - 10:57, 15 June 2025
  • following functions and variables are used in the table below: δ represents the Dirac delta function. u(t) represents the Heaviside step function. Literature...
    10 KB (574 words) - 16:09, 28 April 2025
  • Thumbnail for Logistic function
    (with scaling) is a smooth approximation of the Heaviside step function. The standard logistic function is analytic on the whole real line since f : R...
    56 KB (8,069 words) - 23:47, 14 June 2025
  • Thumbnail for Artificial neuron
    net" in the brain. As an activation function, it employed a threshold, equivalent to using the Heaviside step function. Initially, only a simple model was...
    31 KB (3,602 words) - 19:04, 23 May 2025
  • crater) Heaviside condition Heaviside cover-up method Heaviside layer or Kennelly–Heaviside layer Heaviside step function Heaviside's dolphin, named in honour...
    839 bytes (120 words) - 17:15, 21 February 2025
  • Thumbnail for Rectangular function
    The rectangular function (also known as the rectangle function, rect function, Pi function, Heaviside Pi function, gate function, unit pulse, or the normalized...
    10 KB (1,625 words) - 21:11, 28 May 2025
  • Thumbnail for Error function
    functions occur, for example, in solutions of the heat equation when boundary conditions are given by the Heaviside step function. The error function...
    47 KB (7,328 words) - 08:39, 27 April 2025
  • Thumbnail for Black–Scholes equation
    0\}}-1)=K\left(e^{x}-1\right)H(x),} where H(x) is the Heaviside step function. The Heaviside function corresponds to enforcement of the boundary data in...
    15 KB (2,715 words) - 23:39, 18 April 2025
  • Thumbnail for Rectifier (neural networks)
    the logistic function. This in turn can be viewed as a smooth approximation of the derivative of the rectifier, the Heaviside step function. The multivariable...
    23 KB (3,056 words) - 12:14, 15 June 2025
  • Thumbnail for Softplus
    Softplus (category Functions and mappings)
    The logistic function or the sigmoid function is a smooth approximation of the rectifier, the Heaviside step function. The multivariable generalization of...
    5 KB (701 words) - 07:43, 18 June 2025
  • Thumbnail for Trigonometric integral
    integral is considered as the convolution of the sinc function with the Heaviside step function, this corresponds to truncating the Fourier series, which...
    18 KB (3,289 words) - 05:51, 19 May 2025
  • a distribution fails to be a smooth function. For example, the Fourier transform of the Heaviside step function can, up to constant factors, be considered...
    17 KB (2,721 words) - 07:22, 11 January 2025
  • sinc function: the oscillations in the sinc function cause the ripples in the output. In the case of convolving with a Heaviside step function, the resulting...
    38 KB (5,603 words) - 00:49, 20 June 2025
  • Thumbnail for Bang–bang control
    common residential thermostats are bang–bang controllers. The Heaviside step function in its discrete form is an example of a bang–bang control signal...
    7 KB (752 words) - 16:50, 13 November 2024
  • Thumbnail for Continuous uniform distribution
    continuous uniform distribution may also be expressed in terms of the Heaviside step function as: f ( x ) = H ⁡ ( x − a ) − H ⁡ ( x − b ) b − a , {\displaystyle...
    28 KB (4,230 words) - 23:30, 5 April 2025