http://axel.deri.ie/RR2011/images/logo-deri.jpghttp://t1.gstatic.com/images?q=tbn:ANd9GcT1vLtcQTSwAk2JtmvD8gKBzETZHiUpsJ9I_V5g8u3SCX3OpQqdog

 

André Freitas

PhD Candidate

Digital Enterprise Research Institute (DERI)

National University of Ireland, Galway

 

 

 

 


Short 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, 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, Question Answering, Vocabulary-independent Query Mechanisms, Natural Language Query Mechanisms over Linked Data, Distributional Semantics, Semantic Relatedness, Approximate Reasoning, Provenance.

 

Publications:


2014:


André Freitas, Edward Curry, Natural Language Queries over Heterogeneous Linked Data Graphs: A Distributional-Compositional Semantics Approach, In Proceedings of the 19th International Conference on Intelligent User Interfaces (IUI), Haifa, 2014. (Full Conference Paper) (pdf).

João C. Pereira da Silva, André Freitas, Towards An Approximative Ontology-Agnostic Approach for Logic Programs, In Proceedings of the Eighth International Symposium on Foundations of Information and Knowledge Systems (FoIKS), Bordeaux, 2014. (Full Conference Paper) (pdf).

André Freitas, João Carlos Pereira Da Silva, Edward Curry, Paul Buitelaar, A Distributional Semantics Approach for Selective Reasoning on Commonsense Graph Knowledge Bases, In Proceedings of the 19th International Conference on Applications of Natural Language to Information Systems (NLDB), Montpellier, 2014. (Full Conference Paper) (pdf).

André Freitas, Rafael Vieira, Edward Curry, Danilo Carvalho, João Carlos Silva, On the Semantic Representation and Extraction of Complex Category Descriptors, In Proceedings of the 19th International Conference on Applications of Natural Language to Information Systems (NLDB), Montpellier, 2014. (Short Conference Paper) (pdf), (extended).

Christina Unger, André Freitas, Philipp Cimiano, Introduction to Question Answering over Linked Data, In Proceedings of the 2014 Reasoning Web Summer School, 2014 (pdf).

André Freitas, João Carlos Pereira Da Silva, Edward Curry, On the Semantic Mapping of Schema-agnostic Queries: A Preliminary Study, Workshop of the Natural Language Interfaces for the Web of Data (NLIWoD), 13th International Semantic Web Conference (ISWC), Rival del Garda, 2014. (Workshop Short Paper) (pdf), (extended).

André Freitas, Edward Curry, Siegfried Handschuh, Towards a Distributional Semantic Web Stack, 10th International Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2014), 13th International Semantic Web Conference (ISWC), Rival del Garda, 2014. (Position Paper) (pdf).

André Freitas, Kartik Asooja, Swapnil Soni, Marggie Jones, Panagiotis Hasapis and Ratnesh Sahay, Towards a Semantic Web Platform for Finite Element Simulations, In Proceedings of the 11th Extended Semantic Web Conference (ESWC), Crete,  2014. (Demonstration Paper in Proceedings) (pdf).

Danilo Carvalho, Çağatay Çallı, André Freitas, Edward Curry, EasyESA: A Low-effort Infrastructure for Explicit Semantic Analysis, In Proceedings of the 13th International Semantic Web Conference (ISWC), Rival del Garda, 2014. (Demonstration Paper in Proceedings).

Big Data Curation Technical Whitepaper, BIG Project Report, 2014. (to appear) (Technical Report).

2013:


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.  (Article) (pdf).


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) (pdf).


André Freitas, João C. P. da Silva, Sean O’Riain, Edward Curry, Distributional Relational Networks, AAAI Fall Symposium, Arlington, 2013 (Conference Paper) (pdf).

André Freitas, Edward Curry, Do it yourself (DIY) Jeopardy QA System, In Proceedings of the 12th International Semantic Web Conference (ISWC), Sydney, 2013 (Demonstration Paper in Proceedings) (pdf).


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) (pdf).

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).


André Freitas, Sean O'Riain and Edward Curry, Crossing the Vocabulary Gap for Querying Complex and Heterogeneous Databases: A Distributional-Compositional Semantics Perspective, 3rd Workshop on Data Extraction and Object Search (DEOS), 29th British National Conference on Databases (BNCOD), Oxford, UK, 2013. (Abstract).


André Freitas, Danilo S. Carvalho, João C. Pereira da Silva, Extracting Linked Data Graphs from Texts: An Ontology-Agnostic Approach, 3rd Workshop on Data Extraction and Object Search
(DEOS), 29th British National Conference on Databases (BNCOD), Oxford, UK, 2013. (Abstract).


Andr
é Freitas, Margaret Jones, Kartik Asooja, Christos Bellos, Steve Elliott, Stefan Stenfelt, Panagiotis Hasapis, Christos Georgousopoulos, Torsten Marquardt, Nenad Filipovic, Stefan Decker, Ratnesh Sahay, Towards a Semantic Representation for Multi-Scale Finite Element Biosimulation Experiments, 13th IEEE  International Conference on BioInformatics and BioEngineering (BIBE), Chania. Greece, 2013. (Conference Paper) (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).

 
Tomas Knap, André Freitas, Irena Mlynkova, Web Quality Assessment Model,  Technical Report, 2011 (Technical Report) (pdf).

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).

 

Academic:

 

PhD Candidate at the Digital Enterprise Research Institute (DERI), National University of Ireland, Galway (Sept/2009-today). Supervisor: Dr. Edward Curry .

 

BSc. in Computer Science, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. (2001-2005).

Current Projects:

 

Treo – A Natural Language Query Mechanism for Linked Data (link).

 

Graphia Semantic Graph Extractor from Wikipedia Texts (link).


EasyESA 
  Easy-to-deploy Explicit Semantic Analysis Infrastructure (link).

Cogs – Extract-Transform-Load (ETL) Provenance Vocabulary (link).


EU Projects:


BIG - Big Data Public Private Forum (EU) (link): Big Data Public Private Forum (BIG) is working towards the definition and implementation of a clear strategy that tackles the necessary efforts in terms of research and innovation, while also it provides a major boost for technology adoption and supporting actions for the successful implementation of the Big Data economy.

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 (EU) (link): The SIFEM vision is to develop an Infostructure to semantically interlink a Finite Element (FE) tool and open-source supportive tools and libraries with the clinical knowledge, the available clinical and experimental data and a Model Repository in order to obtain more elaborate and reusable multi-scale models of the inner-ear. The long-term outcome of the SIFEM project is to enhance the accuracy of diagnosis and the efficiency of the treatment planning delivered to patients suffering from Sensorineural hearing loss resulting to more personalized healthcare.

 

Past Projects:


GT-LinkedDataBR – ETL Platform for Leveraging Linked Open Government Data (link).


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) (link).

Co-Organizer Insight Workshop on Distributional Semantics 2014 (link).
Co-organizer Rio Big Data Meetup (link).

PC CLEF Labs 2014.
PC *SEM  2013.
PC ACM SAC Semantic Web and Applications 2015.
PC ACM SAC Semantic Web and Applications 2014.
PC ACM SAC Semantic Web and Applications 2013.

PC ACM SAC Semantic Web and Applications 2012.

PC ONTOBRAS/MOST 2013. 

PC ONTOBRAS/MOST 2012.
PC Natural Language Interfaces for the Web of Data, ESWC Workshop 2014.

PC 2nd International Workshop on Finance and Economics on the Semantic Web (FEOSW 2014).
PC 5th Intelligent Networking and Collaborative Systems.
Reviewer of the Journal of Web Semantics.
Reviewer of the International Journal on Semantic Web and Information Systems.
Reviewer of the Future Generation Computer Systems.
Reviewer of the Information Processing Letters.

Reviewer of Computers and Electrical Engineering.
Reviewer of the Extended Semantic Web Conference (ESWC) 2014.

Reviewer of the International Conference on Computational Semantics (ICCS) 2014.
Reviewer of the International Semantic Web Conference (ISWC) 2013.


Talks & Tutorials:


Question Answering over Linked Data: Challenges, Approaches & Trends, André Freitas and Christina Unger, Tutorial at ESWC, Hersonissou, Crete, 2014, (website).
Question Answering over Linked Data, Philipp Cimiano, Christina Unger and André Freitas, Tutorial at the Reasoning Web Summer School, Athens, 2014, (website).

Coping with Data Variety in the Big Data Era: The Semantic Computing Approach, Rio Big Data Meetup, Rio de Janeiro, 2014, (slides).
Question Answering for Linked Data & Big Data, Tutorial at LdB - Semantics: Theory, Technologies and Applications, Bari,
2013, (slides).
Coping with the Long Tail of Data Variety, Poster at the European Data Forum, Athens, 2014.

From Linked Data to Semantic Applications, Talk at Latin America Linked Data Meetup, 2013, (slides).
A Compositional-distributional Semantic Model over Structured Data, Talk at Insight Workshop on Latent Space Methods at UCD, Dublin, 2014, (slides)

An Introduction to Compositional Models in Distributional Semantics, Talk at DERI Reading Group, 2013, (slides)
Managing Data variety in a Context of Heterogeneous and Unstructured Data, Andre Freitas and Helen Lippell, Talk at AAAI Fall Symposium, Big Data & Semantics, Arlington, 2013.

Querying Linked Data using Distributional Semantics: A Vocabulary Independent Approach, Talk at DERI Institute Meeting, 2011, (slides).

In Press:


Treo Gives Direction For Answering Queries Over Graph Data, SemanticWeb.com, October 21st, 2013 (link).
Amtera Breaks Out Semantic Relatedness API,
SemanticWeb.com, September 9th, 2013 (link).


Spin-off:

 

Amtera Semantic Technologies (Government and private seed funded start-up with revenue) – Product Designer, Project Manager, Co-founder.

Recent Event Participations:

 

NLDB 2014, ESWC 2014, IUI 2014, AAAI Fall Symposium 2013, SIGIR 2013, DEOS 2013, ESWC 2013, 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.

 

Previous Industry Activities:

 

Siemens Corporate Research, Princeton, USA – Research Assistant – Trainee – Development of web services for a medical imaging platform/information extraction from images (C++) (2008 - 2009).

 

Petrobrás, Sonda-ProcWork, Rio de Janeiro, Brazil – Software Engineer – Development of software tools for supporting Oil & Gas exploration (C++) (2008).

 

3Elos IT Security, Rio de Janeiro, Brazil – Software Engineer – Development of a high-performance log server and security log analysis tool (C++) (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).


Oi/Telemar, Rio de Janeiro, Brazil - Intern - Configuration of the corporate CRM platform (2001-2002).

 

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 Rafael Vieira (with Prof. J.C. Pereira da Silva) Semantic Representation of Complex Classes. UFRJ 2014. (BSc. final project).

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

 

http://axel.deri.ie/RR2011/images/logo-deri.jpg