Complexity - Dictionary Definition and Overview

Complexity :  (noun)

1: the quality of being intricate and compounded; "he enjoyed the complexity of modern computers" [syn: complexness] [ant: simplicity]

Based on WordNet 2.0

Complexity : \Com*plex"i*ty\, n.; pl. Complexities. [Cf. F. complexit['e].] 1. The state of being complex; intricacy; entanglement.

The objects of society are of the greatest possible complexity. --Burke.

2. That which is complex; intricacy; complication.

Many-corridored complexities Of Arthur's palace. --Tennyson.

Based on Webster's Revised Unabridged Dictionary

Complexity : 

The level in difficulty in solving mathematically posed problems as measured by the time, number of steps or arithmetic operations, or memory space required (called time complexity, computational complexity, and space complexity, respectively).

The interesting aspect is usually how complexity scales with the size of the input (the "{scalability"), where the size of the input is described by some number N. Thus an algorithm may have computational complexity O(N^2) (of the order of the square of the size of the input), in which case if the input doubles in size, the computation will take four times as many steps. The ideal is a constant time algorithm (O(1)) or failing that, O(N).

See also NP-complete.

(1994-10-20)



Based on Webster's Revised Unabridged Dictionary (1913)

Example Usage of Complexity

DigitalDoyle: @BrightMoments Do not fear the Complexity. totaltraining.com will get you up to speed in no time for very little $.
RSessions: Had an inspiring 4 hour lunch with Nikos Salingaros. Compared thoughts on bldg and IT architectural Complexity. MANY analogies.
fooshare: Structural Complexity Management: An Approach for the Field of Product Design http://goo.gl/fb/yY9d
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