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  2. Color gradient - Wikipedia

    en.wikipedia.org/wiki/Color_gradient

    A linear, or axial, color gradient. In color science, a color gradient (also known as a color ramp or a color progression) specifies a range of position-dependent colors, usually used to fill a region. In assigning colors to a set of values, a gradient is a continuous colormap, a type of color scheme.

  3. Image gradient - Wikipedia

    en.wikipedia.org/wiki/Image_gradient

    Mathematically, the gradient of a two-variable function (here the image intensity function) at each image point is a 2D vector with the components given by the derivatives in the horizontal and vertical directions. At each image point, the gradient vector points in the direction of largest possible intensity increase, and the length of the ...

  4. Gradient-like vector field - Wikipedia

    en.wikipedia.org/wiki/Gradient-like_vector_field

    Given a Morse function f on a manifold M, a gradient-like vector field X for the function f is, informally: away from critical points, X points "in the same direction as" the gradient of f, and; near a critical point (in the neighborhood of a critical point), it equals the gradient of f, when f is written in standard form given in the Morse ...

  5. t-distributed stochastic neighbor embedding - Wikipedia

    en.wikipedia.org/wiki/T-distributed_stochastic...

    The minimization of the Kullback–Leibler divergence with respect to the points is performed using gradient descent. The result of this optimization is a map that reflects the similarities between the high-dimensional inputs.

  6. Wikipedia : WikiProject Maps/Conventions/Gradient maps

    en.wikipedia.org/.../Conventions/Gradient_maps

    Stake. Gradient maps are both at the center and at the basic level of map making on Wikipedia. A simple blank map and fill with color tool are needed. To continue to build a coherent Wikipedia display, this page suggests the most suitable SVG source files together with a blue-based color ramps from academic, screen friendly, print friendly, and color-blind friendly ColorBrewer2 by cartography ...

  7. Sigmoid function - Wikipedia

    en.wikipedia.org/wiki/Sigmoid_function

    A wide variety of sigmoid functions including the logistic and hyperbolic tangent functions have been used as the activation function of artificial neurons. Sigmoid curves are also common in statistics as cumulative distribution functions (which go from 0 to 1), such as the integrals of the logistic density , the normal density , and Student's ...

  8. Backpropagation - Wikipedia

    en.wikipedia.org/wiki/Backpropagation

    Backpropagation computes the gradient of a loss function with respect to the weights of the network for a single input–output example, and does so efficiently, computing the gradient one layer at a time, iterating backward from the last layer to avoid redundant calculations of intermediate terms in the chain rule; this can be derived through ...

  9. Flutter (American company) - Wikipedia

    en.wikipedia.org/wiki/Flutter_(American_company)

    The company plans to achieve profit by licensing the technology to software companies that can then integrate Flutter into their own apps. [3] Nariyawala stated: "Flutter wants to power the eyes of our devices—in the same way that Siri functions as the iPhone’s ears." [4] Flutter was acquired by Google in October 2013 for US$40 million. [5]