roots.tdl

;;; -*- Mode: TDL; Coding: utf-8 -*-
; (ERB 2001-10-03) Root type for NP fragments.

; AO (2003-09-04)
; np-frag-end-root is needed agai, but actually it does not used.
; See global.lsp.

; AO (2003-08-29) BEGIN
; np-frag-root  -> np-frag-end-root
; Comment will be added.

;np-frag-root := np-frag-rule-type.

;; not used by lkb
;np-frag-end-root := np-frag-end-rule-type.

; See rule-types.tdl and japgram.tdl
; AO (2003-08-29) END

; (ERB 2001-12-10) Try letting a few things attach to 
; utterances (principally, interjections, greetings, other
; discourse particles).

;utterance-root := sign &
;[ SYNSEM.LOCAL.CAT.HEAD utterance_head ].

; (MS 2002-1-7) This would be the version for a 'cleaner' grammar that is not robust, but accurate.

;utterance-root := j-sign &
;[ SYNSEM [LOCAL.CAT.HEAD utterance_head,
;	 NON-LOCAL.ROBUST -] ].

; (MS 2004-03-24) This is the version with underspecification of ARG binding,
; for example in relative sentences or topics

;utterance-root := j-sign &
;[ SYNSEM [LOCAL.CAT.HEAD utterance_head,
;	 NON-LOCAL [ROBUST -,
;		    UNDERSPEC_ARG +] ]].

;utterance-root := j-sign &
;[ SYNSEM [LOCAL.CAT.HEAD utterance_head,
;	 NON-LOCAL [UNDERSPEC_ARG +] ]].


 
; (MS-2004-03-24) This is the version, which tries to bind ARGs in
; situations, where the binding is not clear, gives multiple analyses and
; lets further processing decide.

; (FCB 2005-09-25) changed utterance_head to utterance-super to allow fragments

utterance-root := sign &
[ SYNSEM [LOCAL.CAT.HEAD utterance-super,
	 NON-LOCAL [ROBUST +,
		    UNDERSPEC_ARG -] ]].


; (MS 2002-12-04) fragment rule type for number fragments


number-frag-root := number-frag-rule-type.


;;;
;;; Idiom Implementation (060804)
;;;
; Used to determine on which candidate root edges to not apply the idiom checks
; (for efficiency)
root_non_idiom := sign &
  [ IDIOM - ].

; SSH 2015-06-30 This root type should be used for only robust parsig. 
; This cannot be used for generation.
root-bridge := phrase &
  [ SYNSEM.LOCAL.CAT.HEAD bridge-head & [ BRIDGED + ] ].