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  2. Minimum mean square error - Wikipedia

    en.wikipedia.org/wiki/Minimum_mean_square_error

    Standard method like Gauss elimination can be used to solve the matrix equation for .A more numerically stable method is provided by QR decomposition method. Since the matrix is a symmetric positive definite matrix, can be solved twice as fast with the Cholesky decomposition, while for large sparse systems conjugate gradient method is more effective.

  3. Mean squared error - Wikipedia

    en.wikipedia.org/wiki/Mean_squared_error

    The MSE either assesses the quality of a predictor (i.e., a function mapping arbitrary inputs to a sample of values of some random variable), or of an estimator (i.e., a mathematical function mapping a sample of data to an estimate of a parameter of the population from which the data is sampled).

  4. Orthogonality principle - Wikipedia

    en.wikipedia.org/wiki/Orthogonality_principle

    The orthogonality principle is most commonly used in the setting of linear estimation. [1] In this context, let x be an unknown random vector which is to be estimated based on the observation vector y. One wishes to construct a linear estimator ^ = + for some matrix H and vector c.

  5. MMSE - Wikipedia

    en.wikipedia.org/wiki/MMSE

    MMSE can refer to: Mini–mental state examination, a questionnaire to measure cognitive impairment; Minimum mean square error, an estimation method that minimizes the mean square error; Multimedia Messaging Service Environment, the servers in a mobile telephony network required for Multimedia Messaging Service messaging.

  6. List of chemical analysis methods - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_analysis...

    Analytical chemistry; List of materials analysis methods This page was last edited on 14 November 2023, at 15:12 (UTC). Text is available under the Creative Commons ...

  7. Quantitative analysis (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Quantitative_analysis...

    The general expression Qualitative Analysis [...] refers to analyses in which substances are identified or classified on the basis of their chemical or physical properties, such as chemical reactivity, solubility, molecular weight, melting point, radioactivity properties (emission, absorption), mass spectra, nuclear half-life, etc. Quantitative Analysis refers to analyses in which the amount ...

  8. In the NFC, the Detroit Lions are on course for the No. 1 seed as they enjoy a historic season to march to the postseason.. And the Philadelphia Eagles will also be in the playoffs after a long ...

  9. Rule of mutual exclusion - Wikipedia

    en.wikipedia.org/wiki/Rule_of_mutual_exclusion

    The rule of mutual exclusion in molecular spectroscopy relates the observation of molecular vibrations to molecular symmetry.It states that no normal modes can be both Infrared and Raman active in a molecule that possesses a center of symmetry.

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