Check out this Miscellaneous WhizzML script "Sliding Windows"

Sliding windows | BigML.com

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Sliding Windows

Details:

Created	Thu, 8 Oct 2026 14:59:23 +0000
Published	Thu, 8 Oct 2026 17:26:39 +0000

Description:

Extends a dataset with additional fields containing row-shifted values of each numeric field

Tags:

BigMLer BigMLer_ThuOct0826_165922

URL:

https://bigml.com/user/whizzml/gallery/script/6ac7afcbfa54d0f159b44a70

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Source code

;; Extend an input dataset with fields containing row-shifted values
;; of each non-datetime numeric field, corresponding to a given sliding window
;; interval.

;; Given and list of field descriptors and window edge locations,
;; construct the new_fields parameter: a list of flatline strings and
;; new field names
(define (new-fields fdescs begin end)
  (let (flat-str (lambda (f) (flatline "(window {{f}} {begin} {end})")))
    (reduce
     (lambda (nfs fd)
             (if (and (numeric-field? fd) (not (fd "parent_optype" false)))
               (append nfs {"field" (flat-str (fd "name"))
                            "names" (map (lambda (t) (str (fd "name") " " t))
                                         (range begin (+ end 1)))})
               nfs))
     [] (values fdescs))))

;; BigML call to extend the input dataset with new sliding window fields.
(define (extend-with-windows dataset-id begin end)
  (let (fds (resource-fields dataset-id)
        nfs (if (>= end begin)
              (new-fields fds begin end)
              (prog (log-warn "Swapping window begin and end values")
                    (new-fields fds end begin))))
    (create-and-wait-dataset dataset-id {"new_fields" nfs})))

;; Input and output
(define result (extend-with-windows dataset-id begin end))

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License: Creative Commons Zero V1.0
Script FREE

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