noun
redundancy (information theory)
Technical term in information theory; refers to the amount of extra data beyond the essential information.
データ圧縮は冗長度を減らすことで実現される。
Data compression is achieved by reducing redundancy.
Compound of 冗長 (redundant, verbose) and 度 (degree, measure). The exact historical derivation is uncertain; the term is a modern technical coinage.