algorithmn.

Brit.

/ˈalɡərɪð(ə)m/, U.S.

/ˈælɡəˌrɪðəm/

Forms: 1600s algorithme, 1600s– algorithm, 1800s algarithm.

Origin: A borrowing from Latin. Etymon: Latin algorithmus.

Etymology: < post-classical Latin algorithmus (15th cent.), alteration of algorismus algorism n., after ancient Greek ἀριθμός number (see arithmetic n.¹). Compare French algorithme (1554 in Middle French as algorithme ), German Algorithmus (16th cent.). Compare earlier algorism n.

1. The Arabic system of numbering, characterized by a zero (cf. algorism n. 1; now rare). Formerly also: †calculus (obsolete).

ΚΠ

1658 E. Phillips New World Eng. Words Algorithme, the art of reckoning by Cyphers.

1699 Philos. Trans. (Royal Soc.) 21 263 The Algorithm or Numeral Figures now in use.

1721 J. Wilson Let. 21 Jan. in I. Newton Corr. (1977) VII. 126 It does not appear from the Commercium that you were acquainted with the true Characteristics and Algorithm of Fluxions or Differences, before their Master.

a1739 N. Saunderson Elements Algebra (1740) I. p. xv The War that was lately waged among Mathematicians..concerning the Algorithm or Principle of Fluxions.

1781 T. Warton Hist. Eng. Poetry III. Diss. iii. sig. f3^v The first who brought the algorithm from the Saracens.

1852 R. Grant Hist. Physical Astron. Introd. 9 The ingenious algorithm of the Indians.

1900 19th Ann. Rep. Bureau Amer. Ethnol. 1897–8 826 In Arabia this mystical system preceded the simple and essentially natural, though happily conventional, system of enumeration and notation long known as algorithm (or algorism).

2. Mathematics and Computing. A procedure or set of rules used in calculation and problem-solving; (in later use spec.) a precisely defined set of mathematical or logical operations for the performance of a particular task.evolutionary, genetic algorithm: see the first element.

ΘΚΠ

the world > relative properties > number > mathematics > [noun] > mathematical enquiry > process of calculating > method or rule for

rulea1387

canonc1400

backer1543

position1551

rule of falsehood1552

rule of three1562

method of exhaustions1685

sieve1803

sieve of Eratosthenes1803

algorithm1811

algorism1888

sieve1897

decision procedure1936

pivotal condensation1939

decision method1940

1811 Eclectic Rev. July 587 It [sc. the calculus of variations] wants a new algorithm, a compendious method by which the theorems may be established without ambiguity and circumlocution.

1819 Philos. Trans. (Royal Soc.) 109 319 I should prefer applying the limiting formulæ in the usual way; passing however from column to column..of the results, at first by means of the neat algorithm..and afterwards by differencing.

1836 O. Gregory Hutton's Course Math. (ed. 11) I. 231 Instead of trying other criteria, apply Horner's algorithm for reducing the equation by 1, 11 …then [etc.].

1874 Proc. Royal Soc. 1873–4 22 434 The simple functions whose properties and relations it is the object of this latter calculus to determine are, first, the three direct functions or algorithms, zⁿ, a^z, sin z.

1902 Trans. Amer. Math. Soc. 3 290 It may be determined by Euclid's algorithm for finding the greatest common divisor.

1947 F. Steinhardt tr. H. A. Bohr Almost Periodic Functions App. 97 It is a question of finding an algorithm which can furnish, for a given function f(x).., finite trigonometric sums s(x) which converge toward the function f(x).

1966 N. F. C. Owen & A. S. C. Ross tr. I. I. Revzin Models of Lang. ii. 22 A..more convenient way of arranging the phonemes is suggested. It is given by an instruction (an ‘algorithm’) consisting of six points.

2006 Focus Nov. 20/2 A calculation based on the way honeybees lead each other to nectar can help companies develop more efficient industrial practices. The Bee Algorithm..allows businesses to test their manufacturing processes against 3000 variables.

3. Medicine. A step-by-step protocol used to reach a clinical diagnosis or decision.

ΘΚΠ

the world > health and disease > healing > diagnosis or prognosis > [noun] > diagnosis > series of diagnostic procedures

workup1945

algorithm1970

1966 Arch. Internal Med. 118 501/2 For it is in just this area where value judgments predominate..that it is most difficult to program the diagnostic algorithm to relate neurocirculatory asthenia with angina in a relative.]

1970 Sc. Med. Jrnl. 15 378 (heading) Flow charts, diagnostic keys and algorithms in the diagnosis of dysphagia.

1984 Ann. Emergency Med. 13 805 The preferred treatment for ventricular fibrillation (VF) refractory to maximal electrical defibrillation remains controversial, as evidenced by recent changes in the American Heart Association's treatment algorithm.

2003 D. P. Connelly in K. M. Ward-Cook et al. Clin. Diagnostic Technol. I. iv. 54 While the hope for clinical algorithms of more global purview was great 20 years ago, a more modest view resulted from actual experience with them.

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	algorithm
释义	algorithmn. Brit. /ˈalɡərɪð(ə)m/, U.S. /ˈælɡəˌrɪðəm/ Forms: 1600s algorithme, 1600s– algorithm, 1800s algarithm. Origin: A borrowing from Latin. Etymon: Latin algorithmus. Etymology: < post-classical Latin algorithmus (15th cent.), alteration of algorismus algorism n., after ancient Greek ἀριθμός number (see arithmetic n.¹). Compare French algorithme (1554 in Middle French as algorithme ), German Algorithmus (16th cent.). Compare earlier algorism n. 1. The Arabic system of numbering, characterized by a zero (cf. algorism n. 1; now rare). Formerly also: †calculus (obsolete). ΚΠ 1658 E. Phillips New World Eng. Words Algorithme, the art of reckoning by Cyphers. 1699 Philos. Trans. (Royal Soc.) 21 263 The Algorithm or Numeral Figures now in use. 1721 J. Wilson Let. 21 Jan. in I. Newton Corr. (1977) VII. 126 It does not appear from the Commercium that you were acquainted with the true Characteristics and Algorithm of Fluxions or Differences, before their Master. a1739 N. Saunderson Elements Algebra (1740) I. p. xv The War that was lately waged among Mathematicians..concerning the Algorithm or Principle of Fluxions. 1781 T. Warton Hist. Eng. Poetry III. Diss. iii. sig. f3^v The first who brought the algorithm from the Saracens. 1852 R. Grant Hist. Physical Astron. Introd. 9 The ingenious algorithm of the Indians. 1900 19th Ann. Rep. Bureau Amer. Ethnol. 1897–8 826 In Arabia this mystical system preceded the simple and essentially natural, though happily conventional, system of enumeration and notation long known as algorithm (or algorism). 2. Mathematics and Computing. A procedure or set of rules used in calculation and problem-solving; (in later use spec.) a precisely defined set of mathematical or logical operations for the performance of a particular task.evolutionary, genetic algorithm: see the first element. ΘΚΠ the world > relative properties > number > mathematics > [noun] > mathematical enquiry > process of calculating > method or rule for rulea1387 canonc1400 backer1543 position1551 rule of falsehood1552 rule of three1562 method of exhaustions1685 sieve1803 sieve of Eratosthenes1803 algorithm1811 algorism1888 sieve1897 decision procedure1936 pivotal condensation1939 decision method1940 1811 Eclectic Rev. July 587 It [sc. the calculus of variations] wants a new algorithm, a compendious method by which the theorems may be established without ambiguity and circumlocution. 1819 Philos. Trans. (Royal Soc.) 109 319 I should prefer applying the limiting formulæ in the usual way; passing however from column to column..of the results, at first by means of the neat algorithm..and afterwards by differencing. 1836 O. Gregory Hutton's Course Math. (ed. 11) I. 231 Instead of trying other criteria, apply Horner's algorithm for reducing the equation by 1, 11 …then [etc.]. 1874 Proc. Royal Soc. 1873–4 22 434 The simple functions whose properties and relations it is the object of this latter calculus to determine are, first, the three direct functions or algorithms, zⁿ, a^z, sin z. 1902 Trans. Amer. Math. Soc. 3 290 It may be determined by Euclid's algorithm for finding the greatest common divisor. 1947 F. Steinhardt tr. H. A. Bohr Almost Periodic Functions App. 97 It is a question of finding an algorithm which can furnish, for a given function f(x).., finite trigonometric sums s(x) which converge toward the function f(x). 1966 N. F. C. Owen & A. S. C. Ross tr. I. I. Revzin Models of Lang. ii. 22 A..more convenient way of arranging the phonemes is suggested. It is given by an instruction (an ‘algorithm’) consisting of six points. 2006 Focus Nov. 20/2 A calculation based on the way honeybees lead each other to nectar can help companies develop more efficient industrial practices. The Bee Algorithm..allows businesses to test their manufacturing processes against 3000 variables. 3. Medicine. A step-by-step protocol used to reach a clinical diagnosis or decision. ΘΚΠ the world > health and disease > healing > diagnosis or prognosis > [noun] > diagnosis > series of diagnostic procedures workup1945 algorithm1970 1966 Arch. Internal Med. 118 501/2 For it is in just this area where value judgments predominate..that it is most difficult to program the diagnostic algorithm to relate neurocirculatory asthenia with angina in a relative.] 1970 Sc. Med. Jrnl. 15 378 (heading) Flow charts, diagnostic keys and algorithms in the diagnosis of dysphagia. 1984 Ann. Emergency Med. 13 805 The preferred treatment for ventricular fibrillation (VF) refractory to maximal electrical defibrillation remains controversial, as evidenced by recent changes in the American Heart Association's treatment algorithm. 2003 D. P. Connelly in K. M. Ward-Cook et al. Clin. Diagnostic Technol. I. iv. 54 While the hope for clinical algorithms of more global purview was great 20 years ago, a more modest view resulted from actual experience with them. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < n.1658
随便看	lemniscus lemon lemon cadmium lemon cheese lemon chrome lemon cling lemon cordial lemon curd lemon dab lemon drizzle cake lemon law lemon meringue lemon oil lemon pie lemon platt lemon posset lemon sauce lemon scurvy grass lemon sole lemon squash lemon thyme lemon-balm lemon-bird lemon-bloom lemon-bush