单词 | pseudorandom |
释义 | pseudorandomadj. Mathematics. Satisfying one or more statistical tests for randomness but produced by a reproducible mathematical procedure. ΘΚΠ the world > relative properties > number > probability or statistics > [adjective] > random or pseudorandom random1884 pseudorandom1949 stochastic1957 1949 Seminar on Sci. Computation, Nov. (International Business Machines) 104/2 A random number c lying between 0 and 1 is selected from a store, or a pseudo~random number c lying between 0 and 1 is computed arithmetically. 1954 Jrnl. Assoc. Computing Machinery 1 88 It is desirable that the machine..be able to manufacture its own random or pseudo-random numbers. 1973 Sci. Amer. May 19/1 The recipient of a coded message can then be provided with a generator that operates exactly like the one used to add pseudorandom digits to the original message. 1977 Aviation Week & Space Technol. (Nexis) 25 July 22 The joint program office..uploaded navigation data into the satellite by readjusting the phasing of the pseudo random noise signal. 1999 R. Bloch in I. B. Cohen & G. W. Welch Makin' Numbers iii. 201 He had recently obtained a systems patent embodying a number-theoretical technique for generating a pseudo-random sequence of digits of huge periodicity. Derivatives ˌpseudoˈrandomly adv. by means of a pseudorandom process. ΘΚΠ the world > relative properties > number > probability or statistics > [adverb] > other factorially1935 stochastically1947 polymodally1959 pseudorandomly1963 1963 IBM Jrnl. Res. & Devel. 7 233/2 A periodic pseudorandomly generated 256-bit pattern. 1976 New Scientist 3 June 529 Each alarm is interrogated pseudo-randomly every 2–3 seconds and a small PDP8 computer identifies the change of state on a visual display unit. 1993 Appl. Linguistics 14 410 To guarantee authenticity, all the conversations were recorded with later consent of the pseudo-randomly..selected participants. ˌpseudoˈrandomness n. the property of being pseudorandom. ΚΠ 1960 Philos. Trans. (Royal Soc.) B. 242 570 By various devices, such as superimposing pseudorandomness on pseudorandomness, the approach to true randomness may be made even closer. 1995 New Scientist 22 July 41/2 This problem of repeatability has led to the development of deterministic sources of ‘pseudorandomness’: mathematical recipes that give repeatable results virtually indistinguishable from the real thing. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < adj.1949 |
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