This repository contains the extraction framework for T-REx Dataset. More details found at: T-REx Website
Paper accepted to LREC2018 link
@inproceedings{DBLP:conf/lrec/ElSaharVRGHLS18,
author = {Hady ElSahar and
Pavlos Vougiouklis and
Arslen Remaci and
Christophe Gravier and
Jonathon S. Hare and
Fr{\'{e}}d{\'{e}}rique Laforest and
Elena Simperl},
title = {T-REx: {A} Large Scale Alignment of Natural Language with Knowledge
Base Triples},
booktitle = {Proceedings of the Eleventh International Conference on Language Resources
and Evaluation, {LREC} 2018, Miyazaki, Japan, May 7-12, 2018.},
year = {2018},
crossref = {DBLP:conf/lrec/2018},
timestamp = {Fri, 18 May 2018 10:35:14 +0200},
biburl = {https://dblp.org/rec/bib/conf/lrec/ElSaharVRGHLS18},
bibsource = {dblp computer science bibliography, https://dblp.org}
}
For the English version of the dataset run startup_multilang.sh
For multilingual versions of the dataset run it with equivalent language code (es, eo, ar are supported)
e.g. startup_multilang.sh es
to run DBpedia spotlight server on port 2222 run in a separate session
cd dbpedia-spotlight
# dbpedia spotlight server needs at least 6gb of ram
java -Xmx6g -jar dbpedia-spotlight-latest.jar en http://localhost:2222/rest
DBPedia triples and same as links are downloaded automatically with the setup.sh script
Downloaded automatically using the setup.sh script
Wikidata provides a tool for exporting RDF dumps
Simple RDF dumps were used in which each statement is represented in a triple and statements with qualifiers are omitted Wikidata RDF dumps 20160801
Sameas links between Wikidata and DBpedia are already extracted and can be found on wikidata.dbpedia.org
The latest available version in this project is available on the extraction page from 20150330
The downloaded dump is available here: 20150330-sameas-all-wikis.ttl.bz2
go to ./datasets/Wikipedia/
run "setup.sh"
the script will download wikipedia latest dump and extract text in articles.
go to ./datasets/wikipedia-abstracts/
run "setup.sh"
the script will download dbpedia abstracts latest dump from DBpedia website
and extract text in article
All of the modules in the pipeline take the a single json file [as described below] and outputs the same file after filling in some of its attributes.
{
"docid": Document id -- Wikipedia document id when dealing with wikipedia dump
"title": title of the wikipedia document
"uri": URI of the item containing the main page
"text": The whole text of the document
"sentences_boundaries": start and end offsets of sentences
[(start,end),(start,end)] start/ end are character indices
"words_boundaries": # list of tuples (start, end) of each word in Wikipedia Article, start/ end are character indices
"entities": # list of Entities (Class Entity)
[
{
"uri":
"boundaries": (start,end) # tuple containing the of the surface form of the entity
"surface-form": ""
"annotator" : "" # the annotator name used to detect this entity [NER,DBpediaspotlight,coref]
}
]
"triples": list of triples that occur in the document
We opt of having them exclusive of other fields so they can be self contained and easy to process
[
{
"subject": class Entity
"predicate": class Entity
"object": class Entity
"dependency_path": "lexicalized dependency path between sub and obj if exists" or None (if not existing)
"confidence": # confidence of annotation if possible
"annotator": # annotator used to annotate this triple with the sentence
"sentence_id": # integer shows which sentence does this triple lie in
}
]
}
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