Method and computer system for part-of-speech tagging of incomplete sentences
AssigneeXerox Corporation
InventorsNelly Tarbouriech, Herve Poirier
Life of this patent
Estimating the term…
Abstract
The invention relates to a method and a computer system for enhanced part-of-speech (POS-) tagging as well as grammatically disambiguating a phrase. A phrase is usually a short multiword expression that may be ambiguous. By introducing grammatical constraints the invention supports POS-tagging as well as grammatically disambiguating the phrase. According to an identifier for the phrase, the phrase is supplemented with artificial context information. The supplemented phrase is then POS-tagged or grammatically disambiguated. Important applications are POS-tagging, Automatic Term Encoding, Headword Detection and Information Retrieval.
Claims19
A method, for use in a computer system, for assigning at least one part-of-speech (POS) tag to a phrase, the method comprising:
- obtaining an identifier for the phrase, the identifier being associated with context information;
- supplementing the phrase with the context information;
- and
- assigning the at least one POS-tag to the phrase based on the supplemented phrase.
A method, for use in a computer system, for grammatically disambiguating a phrase, the method comprising:
- acquiring the phrase;
- acquiring an identifier for the phrase, which is associated with artificial information, the artificial information supporting grammatical disambiguation of the phrase;
- supplementing the phrase with the artificial information;
- and
- grammatically disambiguating the phrase based on the supplemented phrase.
A computer system for part-of-speech (POS)-tagging of a phrase, the system comprising:
- identifier input means for obtaining an identifier for the phrase, the identifier being associated to context information;
- a context storage comprising a plurality of context information items;
- an identifier storage, connected to the context storage, comprising a plurality of identifiers;
- each of which being associated with at least one context information item of the plurality of context information items;
- a context supplementer, connected to the identifier input and the context storage, for supplementing the phrase with the associated context information of the obtained identifier;
- and
- a POS-tagger, connected to the context supplementer, for identifying the part of speech of each part of the phrase based on the supplemented phrase.
Dependencies are inferred from the claim text.