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Adding short description: "Type of error-correcting code" |
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{{Short description|Type of error-correcting code}}
A '''locally testable code''' is a type of [[error-correcting code]] for which it can be determined if a [[String (computer science)|string]] is a [[Code word (communication)|word]] in that code by looking at a small (frequently constant) number of bits of the string. In some situations, it is useful to know if the data is corrupted without decoding all of it so that appropriate action can be taken in response. For example, in communication, if the receiver encounters a corrupted code, it can request the data be re-sent, which could increase the accuracy of said data. Similarly, in data storage, these codes can allow for damaged data to be recovered and rewritten properly.
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