Method for marking semantic roles by fusing predicate prior information

Abstract

The invention relates to the technical field of natural language processing, and provides a method for marking semantic roles by fusing predicate prior information. The method for conducting superficial semantic analysis on a sentence includes the steps that 1, word segmentation and syntactic analysis are conducted on the sentence; 2, the core predicate in the sentence is found; 3, for the current predicate, by the utilization of a basic semantic role marking system, an initial semantic role marking result is generated, so that an initial candidate argument is obtained; 4, the predicate argument group distribution conditions of all predicates in training data are calculated; 5, combined analysis is conducted on the initial semantic role marking result, first, the core argument of all candidate arguments is recognized, and then the predicate argument group with the highest score is calculated according to the probability distribution of a predicate argument group of the current predicate to serve as a final semantic role marking result. The characteristics of the predicates can be sufficiently mined, relation between the predicates and the arguments is reasonably utilized, and the accuracy of semantic role marking is improved.

Description

technical field [0001] The invention relates to the technical field of natural language processing, more specifically, a semantic role labeling method that integrates predicate prior information. Background technique [0002] Semantic role labeling is a shallow semantic analysis technology, which centers on the predicate of the sentence, studies the semantic relationship between each component in the sentence and the predicate, and uses various semantic roles to describe this relationship. Generally, in semantic role labeling, a predicate in a sentence represents an event, and other components related to the predicate usually represent information related to the event. Here is an example of semantic role annotation: [0003] [They] A0 [yesterday] AM-TMP [held in US] AM-LOC [held] Pred [competition] A1. [0004] Among them, "hold" is a predicate representing an event, "they" is the doer of the event, "game" is the subject, "yesterday" is the time when the event occurred, an...

AI Technical Summary

Problems solved by technology

However, in the existing methods, the role of predicates is only reflected in the classification of candidate arguments as a feature, which is obviously contrary to the dominance of predicates in the predicate-argument structure

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