"Recode" means literally "change or rearrange the code." Recoding can be useful in many instances in data mining. Here are some examples:
NULL
, such as "0000" or "9999" or "NA" or some other character string. One way to treat the missing value is to recode, for example, "0000" to NULL
. Then Oracle Data Miner and the database recognize the value as missing.NOTE:The Recode Wizard supports the relational operators =, <=, and >= only. This makes it difficult to partition values at a particular numerical value, for example: Income <= 100000 and Income > 100000). Recode is really meant for use with character strings and integers; use Discretization to partition real numbers.
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