English

Parser Extraction of Triples in Unstructured Text

Computation and Language 2018-11-15 v1 Artificial Intelligence Machine Learning

Abstract

The web contains vast repositories of unstructured text. We investigate the opportunity for building a knowledge graph from these text sources. We generate a set of triples which can be used in knowledge gathering and integration. We define the architecture of a language compiler for processing subject-predicate-object triples using the OpenNLP parser. We implement a depth-first search traversal on the POS tagged syntactic tree appending predicate and object information. A parser enables higher precision and higher recall extractions of syntactic relationships across conjunction boundaries. We are able to extract 2-2.5 times the correct extractions of ReVerb. The extractions are used in a variety of semantic web applications and question answering. We verify extraction of 50,000 triples on the ClueWeb dataset.

Keywords

Cite

@article{arxiv.1811.05768,
  title  = {Parser Extraction of Triples in Unstructured Text},
  author = {Shaun D'Souza},
  journal= {arXiv preprint arXiv:1811.05768},
  year   = {2018}
}
R2 v1 2026-06-23T05:15:12.443Z