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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

    Geometrically, we can see this problem by the following simple case where is a one-dimensional subspace: We want to find the closest approximation to the vector x {\displaystyle x} by a vector x ^ {\displaystyle {\hat {x}}} in the space W {\displaystyle W} .

  4. 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 ...

  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 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?

  7. Waymo's robotaxis a threat to Uber's business? Not so fast ...

    www.aol.com/finance/waymos-robotaxis-threat...

    While Uber stock took a hit on Thursday due to Waymo’s latest move to Miami, not all of Wall Street is convinced the Waymo threat is a death knell to Uber’s business.

  8. RICE chart - Wikipedia

    en.wikipedia.org/wiki/RICE_chart

    It is used in chemistry to keep track of the changes in amount of substance of the reactants and also organize a set of conditions that one wants to solve with. [1] Some sources refer to a RICE table (or box or chart) where the added R stands for the reaction to which the table refers. [ 2 ]

  9. Follow These Syrian Refugees As They Risk Everything For A ...

    testkitchen.huffingtonpost.com/1000-miles/?ir=Canada

    Seven countries, an ocean and over a thousand miles stand between them and their dreams for a future