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networks: Make build-all-state take a hash as the domain mapping. 

It used to take a list of pairs.
This commit is contained in:
Sergiu Ivanov 2020-02-23 09:09:43 +01:00
parent 5a27469dce
commit bdbbae6eb6
2 changed files with 8 additions and 6 deletions
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2
networks-tests.rkt
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@ -60,7 +60,7 @@
(check-false (has-edge? ig 'c 'b))
(check-false (has-edge? ig 'c 'a)))
(check-equal? (map hash->list (build-all-states '((a . (#t #f)) (b . (1 2 3)))))
(check-equal? (map hash->list (build-all-states #hash((a . (#t #f)) (b . (1 2 3)))))
'(((a . #t) (b . 1))
((a . #t) (b . 2))
((a . #t) (b . 3))

12
networks.rkt
View File

@ -23,7 +23,7 @@
network?)]
[list-interactions (-> network-form? variable? (listof variable?))]
[build-interaction-graph (-> network-form? graph?)]
[build-all-states (-> (listof (cons/c variable? generic-set?)) (listof state?))]
[build-all-states (-> (hash/c variable? generic-set?) (listof state?))]
[build-all-states-same-domain (-> (listof variable?) generic-set? (listof state?))]
[make-same-domains (-> (listof variable?) generic-set? (hash/c variable? generic-set?))]
[make-boolean-domains (-> (listof variable?) (hash/c variable? (list/c #f #t)))]
@ -147,10 +147,12 @@
(for/list ([(var _) n]) (cons var (list-interactions n var))))))
;;; Given a list of pairs mapping variables to generic sets of their
;;; Given a hash-set mapping variables to generic sets of their
;;; possible values, constructs the list of all possible states.
(define (build-all-states vars-domains)
(let ([vars (map car vars-domains)]
[domains (map cdr vars-domains)])
(let* ([var-dom-list (hash->list vars-domains)]
[vars (map car var-dom-list)]
[domains (map cdr var-dom-list)])
(for/list ([s (apply cartesian-product domains)])
(make-state (for/list ([var vars] [val s])
(cons var val))))))
@ -158,7 +160,7 @@
;;; Given a list of variables and a domain common to all of them,
;;; builds the list of all possible states.
(define (build-all-states-same-domain vars domain)
(build-all-states (for/list ([v vars]) (cons v domain))))
(build-all-states (for/hash ([v vars]) (values v domain))))
;;; Makes a hash set mapping all variables to a single domain.
(define (make-same-domains vars domain)
@ -188,7 +190,7 @@
;; Build all the states, but as if x were not there: since I
;; replace its domain by a singleton, all states will contain
;; the same value for x.
[states-no-x (build-all-states (hash->list doms-no-x))]
[states-no-x (build-all-states doms-no-x)]
;; Go through all states, then through all ordered pairs of
;; values of x, generate pairs of states (s1, s2) such that x
;; has a smaller value in s1, and check that updating y in s1