a dictionary of English nominalizations,
under Catherine Macleod
relate the nominal complements to the
arguments of the corresponding verb
1025 entries of several types of lexical
first version on January 15, 1999, latest
version October 2001
Developed into NomLex-Plus and
downloadable from http://
Alexander’s destruction of the city happened in 330 BC.
a dictionary of Portuguese
Relate nominals to corresponding
Over 1000 entries of several types of
first version of NOMLEX-BR in 2011,
much expanded 2013
Construção da rodovia Transamazônica, na década de 70, pelo governo Medici,
uma das obras faraonicas da ditadura militar.
Nominalizations in Portuguese
Nominalizations are difficult to deal in KR
systems, as it is harder to obtain the arguments
of the nominal predicate
NOMLEX project (Macleod et al., 1998) provides
a well-established, open access baseline
nominalizations with the suffixes -ion, -ment and
-er, which work well in Portuguese
E.g. construction/ construcao, adjournment/
adiamento and writer/escritor
90% of the original resource easily manually
+ Into OpenWordnet-PT?
We need a Portuguese
Wordnet for our work, as
complete and accurate as we
can get it.
Nomlex-BR helps completenes
and accuracy of OpenWN-PT
data is freely available
correspondence with Princeton
From Universal WordNet(de Melo and
Weikum, 2009) high recall with high
precision for the more salient words
Useful embedding: checking
nominalizations from the Portuguese
NOMLEX were related to the
corresponding verbs showed issues in
+ OpenWN-PT: what does it look like?
Typical good entry with minor manual improvements.
Automatic produces candidate Portuguese words for each
of some of WN3.0 synsets.
Check suggested words and add Portuguese gloss and
+ OpenWN-PT: what does it look like?
Not very useful, but sense exists
No single verb in
Portuguese for this
OpenWN-PT: some issues…
Capitalized items, plurals, duplicates,
a few gender issues, missing items…
OpenWN-PT: RDF Representation
OpenWN-PT encoded and distributed in RDF/
Both data model and actual data in the same
format. Plus existing data processing tools,
including databases (“triple stores”) with SQLlike query interfaces (SPARQL).
Standard W3C encoding of WordNet in RDF
since 2006. OpenWN-PT is modelled after and
fully interoperable with Princeton WordNet.
find Portuguese equivalents for specific
English word senses and vice versa.
OpenWN-PT is part of a large ecosystem of
compatible resources, including domain
identifiers and mappings to Wikipedia.
A small Experiment…
Accuracy: Since the lexicon was
manually created, it is mostly
accurate. Minor typos and bugs
are checked when comparing to
Coverage: Using DHBB to
completed after submission
Need more systematic effort.
But results were encouraging
We presented NomLex-BR, an lexicon of
nominalizations in Brazilian Portuguese.
NomLex-BR is embedded into OpenWordNetPT and shares its RDF representation.
Recent improvements include better
coverage: newer suffixes and Nomage
The data is freely available from http://
github.com/ arademaker/wordnet-br/ and a
SPARQL Endpoint at logics.emap.fgv.br:
Browsing via Open Multilingual Wordnet //
www.casta-net.jp/ ~kuribayashi/ cgi-bin/wnmulti.cgi is fun
+ NomLex-BR: next steps?..
Work with Claudia Freitas on leveraging Linguateca’s PAPEL,
ACDC and Floresta Sintá(c)tica.
Lists from Linguateca’s resources complement NomLex-BR
using corpora and make sure our resource is not simply a
Classification of nominalizations?
Adding the Portuguese terms that satisfy different relations?
Revisiting a Brazilian Wordnet. Valeria de Paiva, Alexandre
Proceedings of Global Wordnet Conference, Global Wordnet
OpenWordNet-PT: An Open Brazilian WordNet For Reasoning.
de Paiva, Valeria, Alexandre Rademaker, and Gerard de Melo. In
Proceedings of the 24th International Conference On Computational
OpenWordNet-PT: A Project Report. Alexandre Rademaker, Valeria
de Paiva, Gerard de Melo, Livy Real and Maira Gatti.
Proceedings of the 7th Global Wordnet Conference, Tartu, Estonia.
Global Wordnet Association, 2014.
Embedding NomLex-BR Nominalizations Into OpenWordnet-PT.
Coelho, Livy Maria Real, Alexandre Rademaker, Valeria De Paiva, and
Gerard de Melo. 2014. In Proceedings of the 7th Global WordNet
Conference. Tartu, Estonia
Other stuff to add in?…
Onto.PT, ES wordnet?
Work with Claudia Freitas?…Leonel?
Work on implicatives/factives in Portuguese?
Towards a Universal Wordnet by Learning from Combined
Evidence Gerard de Melo, Gerhard Weikum (2009)
18th ACM Conference on Information and Knowledge Management
(CIKM 2009), Hong Kong, China.
Bridges from Language to Logic: Concepts, Contexts and
Ontologies Valeria de Paiva (2010)
Logical and Semantic Frameworks with Applications, LSFA'10, Natal,
`A Basic Logic for Textual inference", AAAI Workshop on Inference for
Textual Question Answering, 2005.
``Textual Inference Logic: Take Two", CONTEXT 2007.
``Precision-focused Textual Inference", Workshop on Textual
Entailment and Paraphrasing, 2007.
PARC's Bridge and Question Answering System Proceedings of
Grammar Engineering Across Frameworks, 2007.
+ Simplifying the PARC’s Bridge Architecture
KR mapping rules
Idea: Simplify and reproduce components in PORTUGUESE