André Freitas PhD
Candidate Digital
Enterprise Research Institute (DERI) National
University of Ireland, Galway
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Bio: André
Freitas is a PhD Candidate at the Digital Enterprise Research
Institute (DERI) at the National University of Ireland, Galway
and is a partner and co-founder at Amtera Semantic
Technologies. André holds a BSc. in Computer Science from the
Federal University of Rio de Janeiro (UFRJ), Brazil (2005).
His main research areas include Semantic Search,
Vocabulary-independent Query Mechanisms, Natural Language
Query Mechanisms over Linked Data, Distributional Semantics,
Semantic Relatedness,
Approximate Reasoning and Provenance. Before joining DERI,
André worked as a research assistant (trainee) at Siemens
Corporate Research, Princeton, USA. André
worked as a software engineer (mainly C++ and Java), product
designer and project manager in different industries including
Oil & Gas Exploration, IT Security, Medical, Healthcare,
Banking, Mining and Telecom.
Interest/Research Areas:
General Areas: Natural Language Processing, Information Retrieval, Semantic Web, Big Data, Linked Data,
Artificial Intelligence.
Specific Areas: Semantic Search, Vocabulary-independent
Query Mechanisms, Natural
Language
Query Mechanisms over Linked Data, Distributional Semantics,
Semantic Relatedness, Approximate Reasoning, Provenance.
Publications:
André Freitas, Edward Curry, João Gabriel
Oliveira, João
C. Pereira da Silva, Sean O'Riain, Querying the Semantic Web using Semantic
Relatedness: A Vocabulary Independent Approach. Data & Knowledge Engineering
(DKE) Journal, 2013. (to appear) (Article) (preprint).
André Freitas, Fabricio de Faria, Sean O'Riain, Edward Curry, Answering Natural Language Queries over Linked Data Graphs: A Distributional Semantics Approach, In Proceedings of the 36th Annual ACM SIGIR Conference, Dublin, Ireland, 2013. (Demonstration Paper in Proceedings).
André
Freitas, João C. Pereira da Silva, Danilo S.
Carvalho, Sean O'Riain, Edward Curry, Representing Texts as
Contextualized Entity-Centric Linked Data Graphs,
12th International Workshop on Web Semantics and Web
Intelligence (WebS 2013), 24th International Conference on
Database and Expert Systems Applications (DEXA), Prague,
2013. (Workshop Full Paper).
André Freitas,
Sean O'Riain and Edward Curry, A Distributional Semantic Search Infrastructure for
Linked Dataspaces, In Proceedings of the 10th
Extended Semantic Web Conference (ESWC), Montpellier, France,
2013. (Demonstration Paper in Proceedings) (pdf).
Danilo S. Carvalho, André Freitas and João C. Pereira da Silva, Graphia:
Extracting Contextual Relation Graphs from Text, In
Proceedings of the 10th Extended Semantic Web Conference
(ESWC), Montpellier, France, 2013. (Demonstration Paper in Proceedings)
(pdf).
2012:
André Freitas, Edward Curry, João Gabriel
Oliveira, Sean O'Riain, A Distributional
Structured Semantic Space for Querying RDF Graph Data. International Journal of Semantic
Computing (IJSC), 2012. (Article) (preprint) (link) (slides).
André Freitas, Edward Curry, João Gabriel
Oliveira, Sean O'Riain, Querying Heterogeneous
Datasets on the Linked Data Web: Challenges, Approaches
and Trends. IEEE Internet Computing,
vol. 16, no. 1, p.24-33, 2012.
(Article) (link) (slides).
André Freitas, Edward Curry, Sean O'Riain, A Distributional Approach for Terminological Semantic Search on the Linked Data Web. In Proceedings of the 27th ACM Symposium On Applied Computing (SAC), Semantic Web and Applications (SWA), 2012. (Conference Full Paper) (pdf) (slides).
André Freitas, Danilo S. Carvalho, João Carlos Pereira da
Silva, Sean O'Riain, Edward Curry, A Semantic Best-Effort Approach for Extracting
Structured Discourse Graphs from Wikipedia. In
Proceedings of the 1st Workshop on the Web of Linked
Entities (WoLE 2012) at the 11th International Semantic Web
Conference (ISWC), 2012 (Workshop Full
Paper) (pdf).
André Freitas, Benedikt Kämpgen, João Gabriel Oliveira, Sean
O'Riain, Edward Curry, Representing
Interoperable
Provenance Descriptions for ETL Workflows. ESWC
2012 Workshop Highlights, Lecture Notes in Computer Science
(LNCS), Springer Verlag, 2012. (Extended
Paper published in Conf. Proceedings.) (pdf).
André Freitas,
Benedikt Kämpgen, João Gabriel Oliveira, Sean O'Riain,
Edward Curry, Representing
Interoperable
Provenance Descriptions for ETL Workflows. In
Proceedings of the 3rd International Workshop on Role of
Semantic Web in Provenance Management (SWPM 2012), Extended
Semantic Web Conference (ESWC), Heraklion, Crete, 2012.
(Workshop Full Paper) (pdf)
(slides).
Tope Omitola, André Freitas, Edward Curry, Sean O'Riain, Nicholas Gibbins and Nigel Shadbolt. Capturing Interactive Data Transformation Operations using Provenance Workflows. ESWC 2012 Workshop Highlights, Lecture Notes in Computer Science (LNCS), Springer Verlag, 2012. (Extended Paper published in Conf. Proceedings) (pdf).
Tope Omitola,
André Freitas, Edward Curry, Sean O'Riain, Nicholas Gibbins
and Nigel Shadbolt. Capturing
Interactive Data Transformation Operations using
Provenance Workflows. In Proceedings of
the 3rd International Workshop on Role of Semantic Web in
Provenance Management (SWPM 2012), Extended Semantic Web
Conference (ESWC), Heraklion, Crete, 2012). (Workshop Full
Paper) (pdf)
(slides).
2011:
André Freitas,
João Gabriel Oliveira, Edward Curry, Sean O'Riain, A Multidimensional Semantic Space for Data Model
Independent Queries over RDF Data. In Proceedings
of the 5th International Conference on Semantic Computing
(ICSC), 2011. (Conference Full
Paper) (pdf)
(slides).
André Freitas, João Gabriel Oliveira,
Sean O'Riain, Edward Curry, João Carlos Pereira da Silva, Querying Linked Data using Semantic Relatedness: A
Vocabulary Independent Approach. In
Proceedings of the 16th International Conference on
Applications of Natural Language to Information Systems
(NLDB), 2011. (Conference Full Paper) (pdf) (slides).
André Freitas, João Gabriel Oliveira,
Sean O'Riain, Edward Curry, João Carlos Pereira da Silva, Treo: Combining Entity-Search, Spreading Activation
and Semantic Relatedness for Querying Linked Data, In
1st Workshop on Question Answering over Linked Data (QALD-1)
Workshop at 8th Extended Semantic Web Conference (ESWC), 2011
(Workshop Full Paper) (pdf).
André Freitas, João Gabriel Oliveira,
Sean O'Riain, Edward Curry, João Carlos Pereira da Silva, Treo: Best-Effort Natural Language Queries over
Linked Data, In Proceedings of the 16th
International Conference on Applications of Natural Language
to Information Systems (NLDB), 2011 (Poster in Proceedings) (pdf)
(poster).
Lauane Baroncelli,
André Freitas, The Visibility of the Self on the
Web: A Struggle for Recognition, In Proceedings of 3rd
ACM International Conference on Web Science, 2011 (Poster in
Proceedings) (pdf).
Kelli de Faria Cordeiro,
Fabricio Firmino de Faria, Bianca
de Oliveira Pereira, André Freitas, João Vitor
Villas Boas Freitas, Ana Christina Bringuente,
Lucas de Oliveira Arantes,
Rodrigo Calhau, Veruska Zamborlini,
Maria Luiza Machado Campos, Giancarlo Guizzardi,
An Approach for Managing and Semantically
Enriching the Publication of Linked Open Governmental Data,
3rd Workshop of Applied Computing in Electronic Government
(WCGE), In WEBMEDIA/SBBD, 2011 (Workshop Full Paper) (pdf)
(slides).
2010:
André Freitas, Tomas Knap, Sean
O’Riain, Edward Curry, W3P: Building an OPM based provenance model for the
Web. In Future Generation Computer Systems
, 2010. (Article) (link)
André Freitas, Arnaud Legendre, Sean
O'Riain, Edward Curry, Prov4J: A Semantic Web
Framework for Generic Provenance Management. In The
Second International Workshop on Role of Semantic Web in
Provenance Management (SWPM 2010), Springer, Workshop at
International Semantic Web Conference (ISWC), Shanghai, China,
2010. (Workshop Full Paper) (pdf) (slides).
Edward Curry, André Freitas, Sean
O’Riain, The Role of Community-Driven Data Curation for Enterprises. In David Wood (ed.), Linking Enterprise Data,
Springer, 2010. (Book Chapter) (link) (pdf)
(slides).
Current Projects:
Treo – A Natural Language Query Mechanism for Linked
Data (link).
Graphia – Semantic Graph Extractor from
Wikipedia Texts (link).
BIG - Big Data Public Private Forum (EU)
SIFEM -
Semantic Infostructure interlinking an open source Finite
Element tool and libraries with a model repository for the
multi-scale Modelling and 3d visualization of the inner-ear
GT-LinkedDataBR – ETL Platform for
Leveraging Linked Open Government Data (link).
Cogs –
Extract-Transform-Load (ETL) Provenance Vocabulary (link).
Past Projects:
Prov4J – Experimental Provenance
Framework for the Web (link).
Esprit –
Semantic Web Collaboration and Search Platform for
Organizations (link).
Reviewer & PC Memberships:
Co-Organizer
1st Workshop on Distributional Data Semantics (DiDaS 2012).
PC *SEM 2013.
PC ACM SAC Semantic Web and Applications 2013.
PC ACM SAC Semantic Web and
Applications 2012.
PC
ONTOBRAS/MOST 2012.
Sporadic
Reviewer of: Journal of Web Semantics, Future Generation
Computer Systems.
Talks:
From Linked Data to Semantic Applications, Latin America Linked Data Meetup, 2013, (slides).
DERI Institute Meeting, 2012, (slides).
Recent Event Participations:
Latin America
Linked Data meetup 2013,
Promise Winter School in IR and DB 2013, SIGMOD/PODS 2012, ACM SAC 2012,
Promise Winter School in IR and IV 2012, ICSC 2011, NLDB 2011,
ESWC 2011, ISWC 2010, MIT Linked Data IAP 2010.
W3C-Related Activities:
Participation in the W3C Provenance
Incubator Group (Prov-XG), 2010.
Academic:
PhD Student at the Digital Enterprise
Research Institute (DERI), National University of Ireland,
Galway (Sept/2009-today).
BSc. in Computer
Science, Federal University of Rio de Janeiro (UFRJ), Rio de
Janeiro, Brazil. (2001-2005).
Previous Industry Activities:
Amtera
Semantic Technologies – Product Designer, Project Manager,
Co-founder.
Siemens Corporate
Research, Princeton, USA – Research Assistant – Trainee (C++)
– Development of web services for a medical imaging
platform/information extraction from images (2008 - 2009).
Petrobrás,
Sonda-ProcWork, Rio de Janeiro,
Brazil – Software Engineer (C++) – Development of software
tools for supporting Oil & Gas exploration and
production (2008).
3Elos
IT
Security, Rio de Janeiro, Brazil – Software Engineer (C++) –
Development of a high-performance log server and security
log analysis tool (2005 - 2008).
DBA Engenharia de
Sistemas, Rio de Janeiro, Brazil – Software Engineer –
Software Development for the Bank and Mining industries
(2004).
Electronic
Data
Systems, Rio de Janeiro, Brazil – Software Engineer –
Software Development for the Healthcare industry
(2002-2003).
…
Previous Academic Activities:
Visualization and
Improvement of the Geometric Build-up Algorithm – UFRJ
(Federal University of Rio de Janeiro) 2004-2005 – Supervisor:
Fábio Protti,
DSc.
Scalar Fields and
Wormhole Solutions – CBPF (Brazilian Center of Physics
Research) 2002 – CNPq Grant –
Supervisor: José Martins Salim, DSc.
Wormhole models based
on Schwarzschild solution – CBPF (Brazilian Center of Physics
Research) 2001 – CNPq Grant –
Supervisor: José Martins Salim, DSc.
Supervised Students:
Co-Supervisor
of João Gabriel
Oliveira (with Prof. J.C. Pereira da Silva) Geospatial
Semantic Search over Linked Data. UFRJ 2013. (BSc. final project).
Co-Supervisor of Danilo Carvalho (with Prof. J.C. Pereira da Silva). Extraction of Semantic Relations Graphs from Syntactic Structures: A Semantic Best-Effort Approach. UFRJ 2012. (BSc. final project).
Co-Supervisor of José Renato da Silva and Vinícius Paiva (with Prof. J.C. Pereira da Silva). Semantic Annotator of Software Artifacts. UFRJ 2012. (BSc. final project).
contact
info: firstName-dot-lastName|at|deri-dot-org
address:
Digital
Enterprise Research Institute (DERI)
IDA Business
Park,
Lower Dangan,
Galway,
Ireland