algorithm

• n. [计][数] 算法，运算法则

以阿拉伯数学家Khwarizmi代指算法。algorithm 是当时拉丁语对该数学家名字的拙劣的翻译,或部分受arithmetic的影响。

algorithm

algorithm: [13] Algorithm comes from the name of an Arab mathematician, in full Abu Ja far Mohammed ibn-Musa al-Khwarizmi (c. 780–c. 850), who lived and taught in Baghdad and whose works in translation introduced Arabic numerals to the West. The last part of his name means literally ‘man from Khwarizm’, a town on the borders of Turkmenistan, now called Khiva. The Arabic system of numeration and calculation, based on 10, of which he was the chief exponent, became known in Arabic by his name – al-khwarizmi.

This was borrowed into medieval Latin as algorismus (with the Arabic -izmi transformed into the Latin suffix -ismus ‘-ism’). In Old French algorismus became augorime, which was the basis of the earliest English form of the word, augrim. From the 14th century onwards, Latin influence gradually led to the adoption of the spelling algorism in English.

This remains the standard form of the word when referring to the Arabic number system; but in the late 17th century an alternative version, algorithm, arose owing to association with Greek árithmos ‘number’ (source of arithmetic [13]), and this became established from the 1930s onwards as the term for a stepby- step mathematical procedure, as used in computing. Algol, the name of a computer programming language, was coined in the late 1950s from ‘algorithmic language’.
=> allegory, allergy, arithmetic

algorithm (n.)

1690s, from French algorithme, refashioned (under mistaken connection with Greek arithmos "number") from Old French algorisme "the Arabic numeral system" (13c.), from Medieval Latin algorismus, a mangled transliteration of Arabic al-Khwarizmi "native of Khwarazm," surname of the mathematician whose works introduced sophisticated mathematics to the West (see algebra). The earlier form in Middle English was algorism (early 13c.), from Old French.

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2. Let us start with an immediate consequence of the algorithm.

我们先提出该运算法则的一个直接推论.

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3. A commonly used microcomputer algorithm for multiplication.

微型计算机一种常用的乘法算法.

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4. A statement of fact to be tested for truth or falsehood within an algorithm.

在算法中判定某个事实真假性的语句.

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5. It is, of course, very easy to improve the efficiency of the greedy algorithm.

当然, 贪婪算法的有效性是很容易改进的.

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