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  2. Rule of three (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(aeronautics)

    In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. [ 1 ] [ 2 ] For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.

  3. Vertical navigation - Wikipedia

    en.wikipedia.org/wiki/Vertical_navigation

    An onboard navigation system displays a constant rate descent path to minimums. The VNAV path is computed using aircraft performance, approach constraints, weather data, and aircraft weight. The approach path is computed from the top of descent point to the end of descent waypoint, which is typically the runway or missed approach point. [1]

  4. Rosenbrock function - Wikipedia

    en.wikipedia.org/wiki/Rosenbrock_function

    The following figure illustrates an example of 2-dimensional Rosenbrock function optimization by adaptive coordinate descent from starting point = (,). The solution with the function value 10 − 10 {\displaystyle 10^{-10}} can be found after 325 function evaluations.

  5. 1 in 60 rule - Wikipedia

    en.wikipedia.org/wiki/1_in_60_rule

    2 × 60/30. left of track. Changing the heading four degrees right will now bring him to parallel the intended track. At that point he still has 90 miles to his next waypoint. He is thus two miles to the left of that and thus the waypoint is 4/3 of a degree (2 × 60/90) to the right, or approximately 1° right.

  6. Descent (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Descent_(aeronautics)

    In aeronautics, a descent is any time period during air travel where an aircraft decreases altitude, and is the opposite of an ascent or climb.. Descents are part of normal procedures, but also occur during emergencies, such as rapid or explosive decompression, forcing an emergency descent to below 3,000 m (10,000 ft) and preferably below 2,400 m (8,000 ft), respectively the maximum temporary ...

  7. Backtracking line search - Wikipedia

    en.wikipedia.org/wiki/Backtracking_line_search

    For the case of a function with at most countably many critical points (such as a Morse function) and compact sublevels, as well as with Lipschitz continuous gradient where one uses standard GD with learning rate <1/L (see the section "Stochastic gradient descent"), then convergence is guaranteed, see for example Chapter 12 in Lange (2013 ...

  8. Double descent - Wikipedia

    en.wikipedia.org/wiki/Double_descent

    Double descent in statistics and machine learning is the phenomenon where a model with a small number of parameters and a model with an extremely large number of parameters both have a small training error, but a model whose number of parameters is about the same as the number of data points used to train the model will have a much greater test ...

  9. Method of steepest descent - Wikipedia

    en.wikipedia.org/wiki/Method_of_steepest_descent

    In mathematics, the method of steepest descent or saddle-point method is an extension of Laplace's method for approximating an integral, where one deforms a contour integral in the complex plane to pass near a stationary point (saddle point), in roughly the direction of steepest descent or stationary phase. The saddle-point approximation is ...