资料来源 : pyDict

回归复原,逆行,退步

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Regression \Re*gres"sion\ (r?*gr?sh"?n), n. [L. regressio: cf.
   F. r['e]gression.]
   The act of passing back or returning; retrogression;
   retrogradation. --Sir T. Browne.

   {Edge of regression} (of a surface) (Geom.), the line along
      which a surface turns back upon itself; -- called also a
      {cuspidal edge}.

   {Regression point} (Geom.), a cusp.

资料来源 : WordNet®

regression
     n 1: an abnormal state in which development has stopped
          prematurely [syn: {arrested development}, {fixation}, {infantile
          fixation}]
     2: (psychiatry) a defense mechanism in which you flee from
        reality by assuming a more infantile state
     3: the relation between selected values of x and observed
        values of y (from which the most probable value of y can
        be predicted for any value of x) [syn: {simple regression},
         {regression toward the mean}, {statistical regression}]
     4: returning to a former state [syn: {regress}, {reversion}, {retrogression},
         {retroversion}]

资料来源 : Free On-Line Dictionary of Computing

regression
     
        1.  A mathematical method where an {empirical
        function} is derived from a set of experimental data.
     
        2. {regression testing}.
     
        (1995-03-14)