"Recode" means literally "change or rearrange the code." Recoding can be useful in many situations in data mining projects. 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: Do not use recode to treat missing values if the values are continuous; recode is not designed to deal with very large numbers of distinct values.
The following limitations apply to the recode transformation:
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