Learning field compatibilities to extract database records from unstructured text

DMCA

Learning field compatibilities to extract database records from unstructured text (2006)

Cached

Download Links

by Michael Wick , Aron Culotta , Andrew Mccallum

Venue:	In EMNLP
Citations:	14 - 2 self

BibTeX

@INPROCEEDINGS{Wick06learningfield,
    author = {Michael Wick and Aron Culotta and Andrew Mccallum},
    title = {Learning field compatibilities to extract database records from unstructured text},
    booktitle = {In EMNLP},
    year = {2006},
    pages = {603--611}
}

OpenURL

Abstract

Named-entity recognition systems extract entities such as people, organizations, and locations from unstructured text. Rather than extract these mentions in isolation, this paper presents a record extraction system that assembles mentions into records (i.e. database tuples). We construct a probabilistic model of the compatibility between field values, then employ graph partitioning algorithms to cluster fields into cohesive records. We also investigate compatibility functions over sets of fields, rather than simply pairs of fields, to examine how higher representational power can impact performance. We apply our techniques to the task of extracting contact records from faculty and student homepages, demonstrating a 53 % error reduction over baseline approaches. 1

Keyphrases

unstructured text field compatibility database record baseline approach database tuples contact record probabilistic model student homepage compatibility function field value representational power cohesive record error reduction named-entity recognition system extract entity record extraction system

DMCA