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Matrix vs Metric - What's the difference?

matrix | metric |

In mathematics terms the difference between metric and matrix

is that metric is a measurement of the "distance" between two points in some metric space: it is a real-valued function d(x,y) between points x and y satisfying the following properties: (1) "positive definiteness": d(x,y) \ge 0 and d(x,y) = 0 \mbox{ iff } x=y , (2) "symmetry": d(x,y) = d(y,x) , and (3) "triangle inequality": d(x,y) \le d(x,z) + d(z,y) while matrix is a rectangular arrangement of numbers or terms having various uses such as transforming coordinates in geometry, solving systems of linear equations in linear algebra and representing graphs in graph theory.

As nouns the difference between metric and matrix

is that metric is a measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in Software Engineering while matrix is the womb.

As an adjective metric

is of or relating to the metric system of measurement.

As a verb metric

is to measure or analyse statistical data concerning the quality or effectiveness of a process.

matrix

English

Noun

(en-noun)
  • The womb.
  • * 1646 , Sir Thomas Browne, Pseudodoxia Epidemica , III.17:
    • upon conception the inward orifice of the matrix exactly closeth, so that it commonly admitteth nothing after [...].
  • * 1969 , Vladimir Nabokov, Ada or Ardor , Penguin 2011, p. 296:
    • In very rare cases, when the matrix just goes on pegging away automatically, the doctor can take advantage of that and ease out the second brat who then can be considered to be, say, three minutes younger [...].
  • (biology) The material or tissue in which more specialized structures are embedded.
  • (biology) An extracellular matrix, the material or tissue between the cells of animals or plants.
  • (biology) Part of the mitochondrion.
  • (biology) The medium in which bacteria are cultured.
  • (mathematics) A rectangular arrangement of numbers or terms having various uses such as transforming coordinates in geometry, solving systems of linear equations in linear algebra and representing graphs in graph theory.
  • (computing) A two-dimensional array.
  • A table of data.
  • (geology) A geological matrix, the outer material of a rock consisting of larger grains embedded in a material consisting of smaller ones.
  • (archaeology and paleontology) The sediment surrounding and including the artifacts, features, and other materials at a site.
  • (analytical chemistry) The environment from which a given sample is taken.

    • Synonyms

    * (mathematics) array, table * (table of data) array, grid, spreadsheet, table * (computing) array

    Derived terms

    * dot matrix * extracellular matrix * geological matrix * matricial

    metric

    English

    (wikipedia metric)

    Adjective

    (-)
  • of or relating to the metric system of measurement
  • (music) of or relating to the meter of a piece of music.
  • (mathematics, physics) Of or relating to distance

    • Derived terms

    * metric carat * metric level * metric system * metric space * metric structure * contrametric * extrametric * intrametric * metrical

    Noun

    (en noun)
  • A measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in Software Engineering)
  • * 2011 , April 10, Financial Times
    • As for the large number of official statements that Spain is safe, I think they are merely a metric of the complacency that has characterised the European crisis from the start.
  • * {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)
    • , title= Boundary problems , passage=Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric , gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.}}
    What metric should be used for performance evaluation?
    What are the most important metrics to track for your business?
    It's the most important single metric that quantifies the predictive performance.
    ''How to measure marketing? Use these key metrics for measuring marketing effectiveness.
    There is a lack of standard metrics .
  • (mathematics) A measurement of the "distance" between two points in some metric space: it is a real-valued function d''(''x'',''y'') between points ''x'' and ''y satisfying the following properties: (1) "positive definiteness": d(x,y) \ge 0 and d(x,y) = 0 \mbox{ iff } x=y , (2) "symmetry": d(x,y) = d(y,x) , and (3) "triangle inequality": d(x,y) \le d(x,z) + d(z,y) .
  • * 2014 , Wikipedia,
    • In mathematics, a metric' or distance function is a function that defines a distance between elements of a set. A set with a ' metric is called a metric space.

    • Synonyms

    * measure

    Hyponyms

    * Euclidean metric * Hausdorff metric * uniform metric * ultrametric

    Derived terms

    * landscape metrics * performance metric * success metric

    Verb

  • To measure or analyse statistical data concerning the quality or effectiveness of a process.
    • we need to metric the status of software documentation
    we need to metric the verification of requirements
    we need to metric the system failures
    the project manager is metricking the closure of the action items
    customer satisfaction was metricked by the marketing department

    See also

    * meter * avoirdupois

    External links

    * *