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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 ?
To feel that kind of hurt is unbearable and the feeling after the 1994 semi-final doesn't bear comparison.
The quickest heat winner, she does face the second fastest in the shape of Leahs Moment, but their overall records do not bear comparison and Greenacre Lin has the advantage of the inside draw to boot.
Surely only Led Zeppelin frontman Robert Plant has vocals that bear comparison.
The festival, which was first announced in the spring as a plan to build an international event which would eventually bear comparison with the Edinburgh Festival, runs from today until August 4.
And meanwhile, in tapas bars from Seville to Santander, flapping waiters of generous girth will serve their gazpacho and chorizo in the proud knowledge that they bear comparison with a Champions League-winning manager.
He's got a long way to go before he can bear comparison with Henderson's 1999 Triumph winner Katarino - probably the outstanding juvenile hurdler of the last ten years - but there are certain similarities.
However, the new development on the most famous waterfront in the world - reminiscent of Shanghai's waterfront and also destined for World Heritage status - must be of a sufficiently sensitive design to bear comparison with the existing 'Three Graces' of the Royal Liver Building, Cunard Building and Port of Liverpool Building.
Listening to DVO being rude with a cucumber just does not bear comparison with Mr T's profanity peppered dissertation on the true meaning of the lyrics to Like a Virgin.
The jets will be customised but are unlikely to bear comparison with the US President's Air Force One, which can direct a war from 32,000ft.
THE middle year of the decade often, for some reason, produces a memorable Derby - will this year's renewal bear comparison with highlights of the past?
Deportivo's away record does not bear comparison, though.
Although undoubtedly pleasant and technically brilliant, On An Island is far too bland to bear comparison with any Floyd masterpiece.