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In engineering and systems theory, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing.
Genetic redundancy. Genetic redundancy is a term typically used to describe situations where a given biochemical function is redundantly encoded by two or more genes. In these cases, mutations (or defects) in one of these genes will have a smaller effect on the fitness of the organism than expected from the genes’ function.
Data redundancy. In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data. The additional data can simply be a complete copy of the actual data (a type of repetition code), or only select pieces of ...
Degeneracy is the redundancy of the genetic code. This term was given by Bernfield and Nirenberg. The genetic code has redundancy but no ambiguity (see the codon tables below for the full correlation). For example, although codons GAA and GAG both specify glutamic acid (redundancy), neither specifies another amino acid (no ambiguity). The ...
Look up redundancy in Wiktionary, the free dictionary. In linguistics, a redundancy is information that is expressed more than once. [1][2] Examples of redundancies include multiple agreement features in morphology, [1] multiple features distinguishing phonemes in phonology, [2] or the use of multiple words to express a single idea in rhetoric.
Gene redundancy is the existence of multiple genes in the genome of an organism that perform the same function. Gene redundancy can result from gene duplication. [1] Such duplication events are responsible for many sets of paralogous genes. [1] When an individual gene in such a set is disrupted by mutation or targeted knockout, there can be ...
Redundancy (information theory), the number of bits used to transmit a message minus the number of bits of actual information in the message. Redundancy in total quality management, quality which exceeds the required quality level, creating unnecessarily high costs. The same task executed by several different methods in a user interface.
Redundant code. In computer programming, redundant code is source code or compiled code in a computer program that is unnecessary, such as: code which is executed but has no external effect (e.g., does not change the output produced by a program; known as dead code). A NOP instruction might be considered to be redundant code that has been ...