n.

repetition of messages to reduce the probability of errors in transmission

the attribute of being superfluous and unneeded

"the use of industrial robots created redundancy among workers"

同義詞：redundance

(electronics) a system design that duplicates components to provide alternatives in case one component fails

repetition of an act needlessly

Identification of redundancies and omissions among components of a web based architecture
Global Optimization by Suppression of Partial Redundancies.
Predicting Protein Functions from Redundancies in Large-Scale Protein Interaction Networks
Global Optimization by Suppression of Partial Redundancies
Generalized redundancies for time series analysis
Generalized redundancies for time series analysis. Physica D 84(3-4): 476-493
BBC journalists vote to strike over compulsory redundancies
Feature selection based on mutual information criteria of max-dependency, max-relevance, and min-redundancy
A Method for the Construction of Minimum-Redundancy Codes
Feature Selection Based on Mutual Information: Criteria of Max-Dependency, Max-Relevance, and Min-Redundancy