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Note that there is debate about the status of INDEX. It is not part of the formal
definition of a complete MRS (see Copestake et al., 2005), hence Ann has at times
argued it should be suppressed when constructing an MRS from its TFS description.
On that point of view, INDEX is an element of the composition process, but not the
'final' product.

Conversely, it has been argued (by Dan and Francis, among others) that composition
does not stop at the utterance level, i.e. if we were to move into discourse-level
analysis, we might still need access to INDEX. Furthermore, in semantic transfer
it is often convenient to have access to the INDEX (even more so as the current
ERG leaves the TOP underspecified). In conclusion, as of mid-2011, I believe
INDEX can be considered a legitimate component of MRSs, even though it remains
true that it has a slightly different formal status than the others

Request For Comments: MRS

Overview

Formal Properties

Required properties:

  • TOP
  • INDEX
  • RELS
  • HCONS

Note that there is debate about the status of INDEX. It is not part of the formal definition of a complete MRS (see Copestake et al., 2005), hence Ann has at times argued it should be suppressed when constructing an MRS from its TFS description. On that point of view, INDEX is an element of the composition process, but not the 'final' product.

Conversely, it has been argued (by Dan and Francis, among others) that composition does not stop at the utterance level, i.e. if we were to move into discourse-level analysis, we might still need access to INDEX. Furthermore, in semantic transfer it is often convenient to have access to the INDEX (even more so as the current ERG leaves the TOP underspecified). In conclusion, as of mid-2011, I believe INDEX can be considered a legitimate component of MRSs, even though it remains true that it has a slightly different formal status than the others

Syntaces

Simple MRS

Indexed MRS

MrsRfc (last edited 2018-11-05 06:23:59 by MichaelGoodman)

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