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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. 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.

  4. 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.

  5. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?

  6. Mini–mental state examination - Wikipedia

    en.wikipedia.org/wiki/Mini–Mental_State...

    The mini–mental state examination (MMSE) or Folstein test is a 30-point questionnaire that is used extensively in clinical and research settings to measure cognitive impairment. [1] [2] It is commonly used in medicine and allied health to screen for dementia. It is also used to estimate the severity and progression of cognitive impairment and ...

  7. Addenbrooke's Cognitive Examination - Wikipedia

    en.wikipedia.org/wiki/Addenbrooke's_Cognitive...

    The Addenbrooke's Cognitive Examination [2] was originally developed as a theoretically motivated extension of the mini–mental state examination (MMSE) [3] which attempted to address the neuropsychological omissions and improve the screening performance of the latter.

  8. NYT ‘Connections’ Hints and Answers Today, Friday ... - AOL

    www.aol.com/nyt-connections-hints-answers-today...

    Get ready for all of today's NYT 'Connections’ hints and answers for #551 on Friday, December 13, 2024. Today's NYT Connections puzzle for Friday, December 13, 2024 The New York Times

  9. Photographic developer - Wikipedia

    en.wikipedia.org/wiki/Photographic_developer

    The reversal process can also be carried out using 800 footcandle-seconds of light, which is used by process engineers to troubleshoot reversal bath chemistry problems. Next, the film is developed to completion in the colour developer bath, which contains CD-3 as the colour developing agent.