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network: Add make-sbf/state.

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This commit is contained in:
Sergiu Ivanov 2020-10-12 22:53:34 +02:00
parent 74a3bb9e69
commit 943fd322c4
1 changed files with 11 additions and 0 deletions
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11
networks.rkt
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@ -83,6 +83,7 @@
[tbf/state-w (-> tbf/state? (hash/c variable? number?))]
[tbf/state-θ (-> tbf/state? number?)]
[make-tbf/state (-> (listof (cons/c variable? number?)) number? tbf/state?)]
[make-sbf/state (-> (listof (cons/c variable? number?)) sbf/state?)]
[apply-tbf/state (-> tbf/state? (hash/c variable? (or/c 0 1)) (or/c 0 1))]
[lists->tbfs/state (->* ((listof (listof (or/c number? symbol?))))
(#:headers boolean?)
@ -982,6 +983,16 @@
(test-case "sbf/state?"
(check-true (sbf/state? (tbf/state #hash((a . -1) (b . 1)) 0)))))
;;; Makes a state/tbf which is an SBF from a list of pairs of names of
;;; variables and weights.
(define (make-sbf/state pairs)
(make-tbf/state pairs 0))
(module+ test
(test-case "make-sbf/state"
(check-equal? (make-sbf/state '((a . -1) (b . 1)))
(make-tbf/state '((a . -1) (b . 1)) 0))))
;;; Applies a state TBF to its inputs.
;;;
;;; Applying a TBF consists in multiplying the weights by the