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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; ;;
;;; Centre for Speech Technology Research ;;
;;; University of Edinburgh, UK ;;
;;; Copyright (c) 1997 ;;
;;; All Rights Reserved. ;;
;;; ;;
;;; Permission is hereby granted, free of charge, to use and distribute ;;
;;; this software and its documentation without restriction, including ;;
;;; without limitation the rights to use, copy, modify, merge, publish, ;;
;;; distribute, sublicense, and/or sell copies of this work, and to ;;
;;; permit persons to whom this work is furnished to do so, subject to ;;
;;; the following conditions: ;;
;;; 1. The code must retain the above copyright notice, this list of ;;
;;; conditions and the following disclaimer. ;;
;;; 2. Any modifications must be clearly marked as such. ;;
;;; 3. Original authors' names are not deleted. ;;
;;; 4. The authors' names are not used to endorse or promote products ;;
;;; derived from this software without specific prior written ;;
;;; permission. ;;
;;; ;;
;;; THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK ;;
;;; DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ;;
;;; ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT ;;
;;; SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE ;;
;;; FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES ;;
;;; WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN ;;
;;; AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ;;
;;; ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF ;;
;;; THIS SOFTWARE. ;;
;;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Author: Alan W Black
;;; Date: December 1997
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; THIS IS EXPERIMENTAL AND DOES *NOT* WORK
;;;
;;; Koskenniemi-style context rewrite rules for English Morphographemics
;;; Basically splits words into their (potential) morphemes.
;;;
;;; Based (roughly) on the rules in "Computational Morphology"
;;; Ritchie et al. MIT Press 1992.
;;;
;;; This is not a Scheme file and can't be loaded and evaluated
;;; It is designed for use with the wfst tools in the speech tools
;;; e.g. wfst_build -type kk -o engmorph.wfst -detmin engmorph.scm
;;;
(KKrules
engmorph
(Alphabets
;; Input Alphabet
(a b c d e f g h i j k l m n o p q r s t u v w x y z #)
;; Output Alphabet
(a b c d e f g h i j k l m n o p q r s t u v w x y z + #)
)
(Sets
(LET a b c d e f g h i j k l m n o p q r s t u v w x y z)
)
(Rules
;; The basic rules
( a => nil --- nil)
( b => nil --- nil)
( c => nil --- nil)
( d => nil --- nil)
( e => nil --- nil)
( f => nil --- nil)
( g => nil --- nil)
( h => nil --- nil)
( i => nil --- nil)
( j => nil --- nil)
( k => nil --- nil)
( l => nil --- nil)
( m => nil --- nil)
( n => nil --- nil)
( o => nil --- nil)
( p => nil --- nil)
( q => nil --- nil)
( r => nil --- nil)
( s => nil --- nil)
( t => nil --- nil)
( u => nil --- nil)
( v => nil --- nil)
( w => nil --- nil)
( x => nil --- nil)
( y => nil --- nil)
( z => nil --- nil)
( # => nil --- nil)
; ( _epsilon_/+ => (or LET _epsilon_/e ) --- (LET))
( _epsilon_/+ => (or LET _epsilon_/e) --- nil)
;; The rules that do interesting things
;; Epenthesis
;; churches -> church+s
;; boxes -> box+s
(e/+ <=> (or (s h) (or s x z) (i/y) (c h))
---
(s))
;; Gemination
(b/+ <=> ( (or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) b )
---
((or a e i o u)))
(d/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) d )
---
((or a e i o u)))
(f/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) f )
---
((or a e i o u)))
(g/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) g )
---
((or a e i o u)))
(m/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) m )
---
((or a e i o u)))
(p/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) p )
---
((or a e i o u)))
(s/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) s )
---
((or a e i o u)))
(t/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) t )
---
((or a e i o u)))
(z/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) z )
---
((or a e i o u)))
(n/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) n )
---
((or a e i o u)))
(l/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) l )
---
((or a e i o u)))
(r/+ <=> ((or b c d f g h j k l m n p q r s t v w z) (or a e i o u y) r )
---
((or a e i o u)))
;; tries->try+s
( i/y <=> ((or b c d f g h j k l m n p q r s t v w x z))
---
((or ( e/+ s )
( _epsilon_/+ (or a d e f h i l m n o p s w y)))))
;; Elision
;; moved -> move+ed
(_epsilon_/e <=>
((or a e i o u ) (or b c d f g j k l m n p q r s t v x z))
---
( _epsilon_/+ (or a e i o u )))
)
)
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