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(computer science)
A computer operation in which two numbers are compared as to identity, relative magnitude, or sign.



comparing a gauge or quantity to be measured with a quantity that is reproducible in the measuring process.

Comparisons are made by instruments such as the equal-arm balance, the electric potentiometer, the photometer bench with a photometer, and the comparator for linear standards.



an act of thought by means of which the content of being and cognition is classified, ordered, and evaluated; in comparison, the world is understood to be “coherent” diversity. The act of comparison consists of the pairing of objects for the purpose of clarifying their relationship. Essential to this are the conditions, or bases, of comparison—the attributes that determine precisely what the possible relationships are between objects.

Comparison has meaning only in an aggregate of “homogeneous” objects that form a class. The comparability of objects in a class (tertium comparationis) is realized in terms of the attributes essential for a particular examination; objects comparable in terms of one basis may be incomparable in terms of another. For example, all people are comparable in terms of age, but not all are comparable with respect to “being older.”

The simplest and most important type of relationships revealed by means of comparison are the relationships of identity (equality) and difference. Comparison of this type leads in turn to the concept of universal comparability, that is, the notion that it is always possible to answer the question of whether objects are identical or different. Objects of visual experience are always comparable, although the condition of visibility, or observability, is a significant restriction. In theory, the visual comparison of objects is often impossible, and to compare objects it is necessary to resort to inferences and, eventually, to certain abstractions from which the inferences have been deduced. The supposition of universal comparability is therefore sometimes called the abstraction of comparability. As a rule, the abstraction of comparability is a nontrivial hypothesis and is valid within the framework and on the basis of the main principles of theory.

M. M. NOVOSELOV [24–1047–1; updated]

References in periodicals archive ?
But shot through Merseybeat is a level of warmth and a host of well-observed characters that allow it to stand comparison with Z Cars.
The system that the SFA have in place is producing a high standard of referees that will stand comparison with colleagues anywhere.
Last night's account from Peter Bridle's mightily expert Birmingham Schools' Symphony Orchestra can safely stand comparison with those from more world-renowned bodies Symphony Hall has witnessed.
Also, his retainer for the Aga Khan is not so valuable that it could stand comparison with the hot seat at Ballydoyle.
Yesterday, There Are Places and Hey Jude seem timeless, but whether they stand comparison the Waterloo Sunset, Sunny Afternoon and Days by the Kinks, Satisfaction by the Rolling Stones or Good Vibrations and Heroes and Villains by the Beach Boys is a matter for debate
Disney's comedy sequel to The Absent Minded Professor doesn't stand comparison with the original, but there's still plenty to keep undemanding viewers entertained.
Admittedly, the 14% of waste that was recycled or composted in the council year 2003/2004 does not stand comparison with the best in Europe (in the Netherlands they recycle 59%) but it is nevertheless a step in the right direction.
That North-East firms stand comparison with the best anywhere shows up in a number of areas ( the London Stock Exchange, the MSCI index and the 100 League of fastest growers to cite just three.
But Owen believes England's quartet stand comparison with anyone -including the French.
He is even starting to stand comparison with former players, having drawn level with Ian Botham's England one-day record of 44 sixes - reaching that tally in only 64 matches compared to the legendary all-rounder's 116 appearances at this level.
Its transaction levels will compare with those of the major banks across Britain and Europe and bring together a range of skills in both organisations that stand comparison with the best in any market.
They stand comparison with anything that is on offer in Australia and I've been impressed with the quality of things they do all along the line.