Browse Prior Art Database

Paraphraser

IP.com Disclosure Number: IPCOM000099816D
Original Publication Date: 1990-Feb-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Braden-Harder, LC: AUTHOR [+4]

Abstract

Disclosed is a scheme to generate paraphrases for a given sentence, that is, alternative sentences which are grammatical and which preserve the general meaning of the original sentence.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 56% of the total text.

Paraphraser

       Disclosed is a scheme to generate paraphrases for a given
sentence, that is, alternative sentences which are grammatical and
which preserve the general meaning of the original sentence.

      Currently, there exist systems which check spelling and offer
synonyms for individual words and systems which check the grammar and
style of sentences and suggest possible corrections.  This scheme
extends these ideas to paraphrasing sentences.  It combines the
substitution of synonyms with grammar and style rules to create
alternative sentences.

      The paraphraser combines three components: 1) lexical
substitution of synonyms; 2) sentence transformation algorithms; and
3) a user interface.

      The proposed sequence for the implementation of the scheme is
as follows:  First, the sentence is parsed for syntactic structure.
Then, the lemma form of the individual word to be changed is looked
up in an online thesaurus for synonyms.  The synonyms are then
inflected to match the inflection of the original word.  The
combination of the syntactic structure of the original sentence with
the inflected synonyms in place of the original words gives rise to a
set of potential sentences.   Based on a set of transformation
algorithms, the parse trees for the new sentences are restructured.
The new structures provide the basis for the generation of new
grammatical sentences.

      The transformation algorithms check the subcategorization
features...