Redundancy

5 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Redundance \Re*dun"dance\ (r?*d?n"dans), Redundancy
  \Re*dun"dan*cy\ (-dan*s?), n. [L. redundantia: cf. F.
     redondance.]
     [1913 Webster]
     1. The quality or state of being redundant; superfluity;
        superabundance; excess.


        [1913 Webster]
  
     2. That which is redundant or in excess; anything superfluous
        or superabundant.
        [1913 Webster]
  
              Labor . . . throws off redundacies.   --Addison.
        [1913 Webster]
  
     3. (Law) Surplusage inserted in a pleading which may be
        rejected by the court without impairing the validity of
        what remains.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  redundancy
       n 1: repetition of messages to reduce the probability of errors
            in transmission
       2: the attribute of being superfluous and unneeded; "the use of
          industrial robots created redundancy among workers" [syn:
          {redundance}]
       3: (electronics) a system design that duplicates components to
          provide alternatives in case one component fails
       4: repetition of an act needlessly

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  132 Moby Thesaurus words for "redundancy":
     EDP, abundance, amplitude, avalanche, battology, bedizenment, bit,
     channel, circumambages, circumbendibus, circumlocution,
     cloud of words, communication explosion, communication theory,
     copiousness, data retrieval, data storage, decoding, deluge,
     diffuseness, diffusion, diffusiveness, duplication,
     duplication of effort, effusion, effusiveness,
     electronic data processing, embarras de richesses, embellishment,
     encoding, enough, entropy, excess, expletive, extravagance,
     extravagancy, exuberance, fat, featherbedding, fecundity,
     fertility, filling, flatulence, flood, fluency, formlessness,
     frill, frills, frippery, gingerbread, gush, gushing, inflatedness,
     inflation, information explosion, information theory, inundation,
     landslide, lavishness, logorrhea, luxury, macrology, money to burn,
     more than enough, needlessness, noise, ornamentation, outpour,
     overabundance, overaccumulation, overadornment, overage,
     overbounteousness, overcopiousness, overdose, overflow, overlap,
     overlavishness, overluxuriance, overmeasure, overmuchness,
     overnumerousness, overplentifulness, overplenty, overplus,
     overpopulation, overprofusion, oversufficiency, oversupply,
     padding, palilogy, payroll padding, periphrase, periphrasis,
     plenty, pleonasm, plethora, prodigality, productivity, profuseness,
     profusion, prolificacy, prolificity, prolixity, rampancy, rankness,
     redundance, reiteration, reiterativeness, repetition for effect,
     repetitiveness, roundabout, signal, spate, stammering, stuttering,
     superabundance, superfluity, superfluousness, superflux, surplus,
     surplusage, talkativeness, tautologism, tautology, teemingness,
     tirade, tumidity, turgidity, unnecessariness, verbality,
     verbosity
  
  

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  redundancy
       
          1.  The provision of multiple interchangeable
          components to perform a single function in order to cope with
          failures and errors.  Redundancy normally applies primarily to
          hardware.  For example, one might install two or even three
          computers to do the same job.  There are several ways these
          could be used.  They could all be active all the time thus
          giving extra performance through {parallel processing} as well
          as extra availability; one could be active and the others
          simply monitoring its activity so as to be ready to take over
          if it failed ("warm standby"); the "spares" could be kept
          turned off and only switched on when needed ("cold standby").
          Another common form of hardware redundancy is {disk
          mirroring}.
       
          Redundancy can also be used to detect and recover from errors,
          either in hardware or software.  A well known example of this
          is the {cyclic redundancy check} which adds redundant data to
          a block in order to detect corruption during storage or
          transmission.  If the cost of errors is high enough, e.g. in a
          {safety-critical system}, redundancy may be used in both
          hardware AND software with three separate computers programmed
          by three separate teams and some system to check that they all
          produce the same answer, or some kind of majority voting
          system.
       
          2.  The proportion of a message's gross
          information content that can be eliminated without losing
          essential information.
       
          Technically, redundancy is one minus the ratio of the actual
          uncertainty to the maximum uncertainty.  This is the fraction
          of the structure of the message which is determined not by the
          choice of the sender, but rather by the accepted statistical
          rules governing the choice of the symbols in question.
       
          [Shannon and Weaver, 1948, p. l3]
       
          [Better explanation?]
       
          (1995-05-09)
       
       

From Bouvier's Law Dictionary, Revised 6th Ed (1856) [bouvier]:

  REDUNDANCY. Matter introduced in an answer, or pleading, which is foreign to 
  the bill or articles. 
       2. In the case of Dysart v. Dysart, 3 Curt. Ecc. R. 543, in giving the 
  judgment of the court, Dr. Lushington says: "It may not, perhaps, be easy to 
  define the meaning of this term [redundant] in a short sentence, but the 
  true meaning I take to be this: the respondent is not to insert in his 
  answer any matter foreign to the articles he is called upon to answer, 
  although such matter may be admissible in a plea; but he may, in his answer, 
  plead matter by way of explanation pertinent to the articles, even if such 
  matter shall be solely in his own knowledge and to such extent incapable of 
  proof; or he may state matter which can be substantiated by witnesses; but 
  in this latter instance, if such matter be introduced into the answer and 
  not afterwards put in the plea or proved, the court will give no weight or 
  credence to such part of the answer." 
       3. A material distinction is to be observed between redundancy in the 
  allegation and redundancy in the proof. In the former case, a variance 
  between the allegation and the proof will be fatal if the redundant 
  allegations are descriptive of that which is essential. But in the latter 
  case, redundancy cannot vitiate, because more is proved than is alleged, 
  unless the matter superfluously proved goes to contradict some essential 
  part of the allegation. 1 Greenl. Ev. Sec. 67; 1 Stark. Ev. 401.