We don't have synonyms for smoothing yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are shooting, soothing and mouthing.
(n) :
(statistics) creation of an approximating function that attempts to capture important patterns in the data, while leaving out noise or other fine-scale structures/rapid phenomena.
(n) :
(statistics) creation of an approximating function that attempts to capture important patterns in the data, while leaving out noise or other fine-scale structures/rapid phenomena.