This allows you to convert a non-standard format date field (one Yellowfin doesn't recognise as a date by default) to a recognised date/time field, by specifying its format. See Date Conversion for more information.
Timestamp Conversion
This allows you to convert values stored in Java time format (milliseconds since midnight January 1, 1970, GMT) to timestamps.
Numeric Conversion
This allows you to convert fields recognised as text by Yellowfin, that contain numeric values, to numeric fields.