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  2. Prognostic chart - Wikipedia

    en.wikipedia.org/wiki/Prognostic_chart

    Low-level prognostic charts used by aviators show the forecast between the Earth's surface and 24,000 feet (7,300 m) above sea level over the next two days. They show areas where visual flight rules are in effect, instrument flight rules are in effect, the height of the freezing level, the location of weather features, and areas of moderate to ...

  3. High- and low-level - Wikipedia

    en.wikipedia.org/wiki/High-_and_low-level

    A low-level programming language is one like assembly language that contains commands closer to processor instructions. In formal methods, a high-level formal specification can be related to a low-level executable implementation (e.g., formally by mathematical proof using formal verification techniques).

  4. Cut-off low - Wikipedia

    en.wikipedia.org/wiki/Cut-off_low

    Kona Low over Hawaii, an example of a cut-off low from the main core of the jet stream. [1]A cut-off low (or cutoff low), sometimes referred to as the weatherman's woe, is defined by the National Weather Service as "a closed upper-level low which has become completely displaced (cut off) from basic westerly current, and moves independently of that current."

  5. Prognostics - Wikipedia

    en.wikipedia.org/wiki/Prognostics

    Data-driven prognostics usually use pattern recognition and machine learning techniques to detect changes in system states. [3] The classical data-driven methods for nonlinear system prediction include the use of stochastic models such as the autoregressive (AR) model, the threshold AR model, the bilinear model, the projection pursuit, the multivariate adaptive regression splines, and the ...

  6. List of statistics articles - Wikipedia

    en.wikipedia.org/wiki/List_of_statistics_articles

    Level of analysis; Level of measurement; Levenberg–Marquardt algorithm; Leverage (statistics) Levey–Jennings chart – redirects to Laboratory quality control; Lévy's convergence theorem; Lévy's continuity theorem; Lévy arcsine law; Lévy distribution; Lévy flight; Lévy process; Lewontin's Fallacy; Lexis diagram; Lexis ratio; Lies ...

  7. Prognostic variable - Wikipedia

    en.wikipedia.org/wiki/Prognostic_variable

    A prognostic variable in engineering within the context of prognostics, is a measured or estimated variable that is correlated with the health condition of a system, and may be used to predict its residual useful life.

  8. Risk matrix - Wikipedia

    en.wikipedia.org/wiki/Risk_matrix

    Risk is the lack of certainty about the outcome of making a particular choice. Statistically, the level of downside risk can be calculated as the product of the probability that harm occurs (e.g., that an accident happens) multiplied by the severity of that harm (i.e., the average amount of harm or more conservatively the maximum credible amount of harm).

  9. Reference water levels - Wikipedia

    en.wikipedia.org/wiki/Reference_water_levels

    The reference water levels are used on inland waterways to define a range of water levels allowing the full use of the waterway for navigation. [1] Ship passage can be limited by the water levels that are too low, when the fairway might become too shallow for large ("target", "design") ships, or too high, when it might become impossible for the target ships to pass under the bridges. [1]