Lexical semantics
Enrique Alfonseca, Keith Hall, Silvana Hartmann,
Large-scale Computation of Distributional Similarities for Queries,
In Proceedings of NAACL-HLT 2009.
Eneko Agirre, Enrique Alfonseca, Keith Hall, Jana Kravalova, Marius Pasca, Aitor Soroa,
A Study on Similarity and Relatedness Using Distributional and WordNet-based Approaches,
In Proceedings of NAACL-HLT 2009 [pdf].
Ruiz-Casado, M. and Alfonseca, E. and Castells, P.,
Automatic Acquisition of Semantics from Text for Semantic Work Environments,
In Rech, Decker and Ras (eds.), Emerging Technologies for Semantic
Work Environments: Techniques, Methods, and Applications.
Information Science Reference, 2008.
M. Ruiz-Casado, E. Alfonseca, M. Okumura and P. Castells,
Information Extraction and Semantic Annotation from Wikipedia.
In P. Buitelaar and P. Cimiano (eds.),
Ontology Learning and Population:
Bridging the gap between text and knowledge.,
IOS Press, 2008.
E. Alfonseca, P. Castells and M. Ruiz-Casado,
Automatising the Learning of Lexical Patterns: an
Application to the Enrichment of WordNet by Extracting
Semantic Relationships from Wikipedia. In the journal
of Data and Knowledge Engineering vol. 61 (3),
pp. 484-499, Elsevier [abstract and full paper]
M. Ruiz-Casado, E. Alfonseca, M. Okumura and
P. Castells, Towards Large-scale Non-taxonomic Re-
lation Extraction: Estimating the Precision of Rote
Extractors. In the second workshop on Ontology
Learning and Population, co-located with ACL-2006.
E. Alfonseca, P. Castells, M. Okumura and
M. Ruiz-Casado, A Rote Extractor with Edit Distance-
based Generalisation and Multi-corpora Precision
Calculation. In the poster session of ACL-2006.
M. Ruiz-Casado, E. Alfonseca and P. Castells, From
Wikipedia to Semantic Relationships: a Semi- automated
Annotation Approach. In the First Workshop
SemWiki2006--From Wiki to Semantics co-located
with the European Semantic Web Conference, ESWC-2006.
M. Ruiz-Casado, E. Alfonseca and P. Castells, Using
context-window overlapping in Synonym Discovery and
Ontology Extension. In Proceedings of the
International Conference Recent Advances in Natural
Language Processing, RANLP-2005, Borovets,
Bulgaria, 2005 [pdf]
M. Ruiz-Casado, E. Alfonseca and P. Castells, Automatic
extraction of semantic relationships for WordNet by
means of pattern learning from Wikipedia. Proceedings
of NLDB-2005. In Natural Language Processing and
Information Systems, Lecture Notes in Computer
Science 3513, pp. 67-79, Springer, 2005 [Abstract
and full paper] [pdf]
M. Ruiz-Casado, E. Alfonseca and P. Castells, Automatic
assignment of Wikipedia encyclopedic entries to WordNet
synsets, Proceedings of the Atlantic Web Intelligence
Conference, AWIC-2005. Lecture Notes in Computer
Science 3528, pp. 380-386, Springer, 2005 [pdf]
E. Agirre, E. Alfonseca and O. López de Lacalle,
Approximating hierarchy-based similarity for WordNet
nominal synsets using Topic Signatures, Second
International Global WordNet Conference, 2004
[pdf]
[local pdf].
E. Alfonseca and
S. Manandhar, Extending a Lexical Ontology by a
Combination of Distributional Semantics Signatures,
EKAW-2002, Siguenza, Spain, october
2002 (35% accepted). Published in Lecture Notes in Artificial
Intelligence 2473 (Springer Verlag), pp. 1-7 [abstract and full paper]
[local pdf].
E. Alfonseca and
S. Manandhar, Proposal for Evaluating Ontology
Refinement Methods. Language Resources and
Evaluation (LREC-2002), Las Palmas, Spain, may
2002
[pdf].
E. Alfonseca and
S. Manandhar, Improving an Ontology Refinement
Method with Hyponymy Patterns. Language Resources
and Evaluation (LREC-2002), Las Palmas, Spain, may
2002
[pdf].
E. Alfonseca and
S. Manandhar, An unsupervised method for general
named entity recognition and automated concept
discovery. In Proceedings of the 1st
International Conference on General WordNet,
Mysore, India, enero de 2002. [pdf]
E. Alfonseca and S. Manandhar, Distinguishing concepts
and instances in WordNet. In Proceedings of the
1st International Conference on General
WordNet, Mysore, India, enero de 2002 [pdf] [Download the data files]
Morphology
E. Alfonseca, S. Bilac and S. Pharies,
Decompounding query keywords from compounding languages.
In Proceedings of ACL-2008
E. Alfonseca, S. Bilac and S. Pharies,
German decompounding in a difficult corpus,
In Proceedings of CICLING-2008
Text summarisation
M. Fuentes, E. Alfonseca and H. Rodríguez,
Support Vector Machines for Query-focused Summarization
trained and evaluated on Pyramid data. Proceedings of ACL-2007.
E. Alfonseca, M. Okumura, A. Moreno-Sandoval and
J. M. Guirao, Googling answer's models in
question-focused summarization. In the Proceedings of
the Document Understanding Conference 2006.
R. Torralbo, E. Alfonseca, A. Moreno-Sandoval and
J. M. Guirao, Description of the UAM system for
DUC-2005. In the International Workshop of the Document
Understanding Conference (DUC-2005), in conjunction
with NAACL, Vancouver, Canada, 2005.
R. Torralbo, E. Alfonseca, A. Moreno-Sandoval and
J. M. Guirao, Automatic Generation of Term Definitions
using Multidocument Summarisation from the Web. In
Proceedings of the International Workshop Crossing
Barriers in Text Summarization Research, in
conjunction with RANLP-2005, Borovets, Bulgaria, 2005
[pdf]
E. Alfonseca,
J. M. Guirao and A. Moreno-Sandoval, A study of
chunk-based and keyword-based approaches for generating
headlines. Advances in Natural Language
Processing. Lecture Notes in Computer Science 3230,
pp. 395-406, 2004 [abstract
and full paper] [local pdf].
E. Alfonseca, J. M. Guirao and A. Moreno-Sandoval,
Description of the UAM system for generating very short
summaries at DUC-2004. NAACL Text Summarization
Workshop and Document Understanding Conference 2004
[pdf].
E. Alfonseca and P. Rodríguez, Description of
the UAM system for generating very short summaries at
DUC-2003. HLT-NAACL Text Summarization Workshop and
Document Understanding Conference 2003 [ps]
[local pdf].
E. Alfonseca and
P. Rodríguez, Generating extracts with
genetic algorithms, The 2003 European Conference on
Information Retrieval (ECIR'2003), Pisa, Italy. Lecture
Notes in Computer Science 2633 (Springer-Verlag), pp. 511-519 [abstract
and full paper]
[local pdf].
Question-Answering
E. Alfonseca, M. DeBoni, J. L. Jara-Valencia and
S. Manandhar, A Prototype Question-Answering System
using Syntactic and Semantic Information for Answer
Retrieval. In Text REtrieval Conference, TREC-2001,
Question-Answering Track, 2001
Language Resources and Evaluation
D. Samy, A. Moreno-Sandoval, J. M. Guirao and
E. Alfonseca, Building and Assessment of a Parallel
Multilingual Corpus (Arabic-Spanish-English). In
Proceedings of the Language Resources and Evaluation
Conference, LREC-2006.
E. Alfonseca, A. Moreno-Sandoval, J. M. Guirao and
M. Ruiz-Casado, The wraetlic NLP suite. In Proceedings
of the Language Resources and Evaluation Conference,
LREC-2006.
E. Alfonseca and M. Ruiz-Casado, Learning Sure-fire
Rules for Named Entity Recognition. In Proceedings
of the International Workshop on Text Mining
Research, in conjunction with RANLP-2005, Borovets,
Bulgaria, 2005 [pdf]
E. Alfonseca, A WordNet Interface to APL2,
Proceedings of the APL-2002 Conference, Madrid,
july 2002. Published as E. Alfonseca, A WordNet
Interface to APL2, APL Quote Quad (ACM SIGAPL),
Vol. 32:4, p. 7-16, 2002 [doc].
E. Alfonseca and
S. Manandhar, A Framework for Constructing
Temporal Models from Texts,
FLAIRS-2002, Pensacola, Florida, EE.UU., 2002
[pdf].
E. Alfonseca, Knowledge Extraction using Information
Extraction, First Technical Workshop of the Computer
Engineering Department. Universidad
Autónoma de Madrid, March 2000.
Syntax
E. Alfonseca and S. Manandhar, Noun Phrase chunking
with APL2. In Proceedings of the APL-Berlin-2000
Conference, Berlin, july 2000. Published as
E. Alfonseca and S. Manandhar, Noun Phrase chunking
with APL2, APL Quote Quad (ACM SIGAPL), Vol. 30:4,
p. 135-143, Jul. 2000.
Textual entailment
D. Perez and E. Alfonseca, Using Bleu-like Algorithms
for the Automatic Recognition of Entailment. In Machine
Learning Challenges. Evaluating Predictive Uncertainty,
Visual Object Classification and Recognising Textual
Entailment. Lecture Notes in Computer Science, volume
3944, Springer Berlin / Heidelberg, 2006, pages
191-204.
D. Pérez and E. Alfonseca, Application of the
Bleu algoritm for recognising textual
entailments. Recognising Textual Entailment
Challenge,, Pascal Challenges Workshop,
Southampton, U.K., 2005 [pdf].
Adaptive hypermedia
E. Alfonseca, P. Rodríguez and D. Pérez,
An approach for automatic generation of adaptive
hypermedia in education with multilingual knowledge
discovery techniques. In Computers and Education vol 19
(2), pp. 495-513, 2007 [Abstract
and full paper]
E. Alfonseca, R. Carro, E. Martin, A. Ortigosa and
P. Paredes, The Impact of Learning Styles on Student
Grouping for Collaborative Learning: A Case Study. In
User Modelling and User-Adapted Interaction, Vol 16,
numbers 3-4, pages 377-401, Kluwer Academic Publishers
[Abstract and full paper].
E. Alfonseca,
P. Rodríguez and D. Pérez, Welkin:
automatic generation of hypermedia sites with NLP
techniques. Lecture Notes in Computer Science 3140
(Springer-Verlag), pp. 617-618, 2004.
[Abstract and full paper]
[local pdf]
E. Alfonseca, D. Pérez and P. Rodríguez,
Automatic Multilingual Generation of on-line
Information Sites. In Proceedings of the Second
International Conference on Multimedia and ICTs in
Education, Badajoz, Spain, december 2003 [pdf].
E.Alfonseca and P. Rodríguez, Extending an
on-line information site with accurate domain-dependent
extracts from the World Wide Web,
Semantic Web for Web Learning workshop, CAiSE'2003,
Velden, Austria [pdf]
E. Alfonseca and
P. Rodríguez, Modelling users' interests
and needs for an adaptive on-line information system,
User Modelling Conference (UM'2003), Pittsburgh,
U.S.A. Lecture Notes in Artificial Intelligence 2702,
pp. 76-80
(Springer-Verlag) [abstract
and full paper]
[local pdf].
E. Alfonseca and
P. Rodríguez, Automatically Generating
Hypermedia Documents depending on User Goals, Workshop
on Document Compression and Synthesis in Adaptive
Hypermedia Systems, AH-2002, Málaga,
Spain., 2002.
Free-text Computer-Assisted Assessment
D. Perez, I. Pascual-Nieto, P. Rodríguez, E. Anguiano and E. Alfonseca,
Validating Automatically Generated Students' Conceptual Models from Free-text Answers at the Level of Concepts,
International Journal of Computer Science 1060, pp. 90-93, 2008.
D. Perez, I. Pascual, P. Rodriguez, E. Anguiano and
E. Alfonseca, Validating Automatically Generated
Students' Conceptual Models from Free-text Answers at
the Level of Concepts. In proceedings of the
International e-conference on Computer Science (IECCS),
December, 2007.
D. Perez, I. Pascual, E. Alfonseca, E. Anguiano and
P. Rodriguez, A study on the impact of the use of an
automatic and adaptive free-text assessment system
during a university course. Chapter of the book
"Blended Learning", presented at the International
Conference on Web-based Learning (ICWL), August 2007,
Edimburg, United Kingdom and published by Prentice
Hall, Pearson Education, ISBN 978-981-06-7903-3, pages
186-195.
D. Perez, E. Alfonseca, P. Rodriguez and I. Pascual, A
study on the possibility of automatically estimating
the confidence values of students' knowledge in
generated conceptual models. Journal of Computers,
Academy Publishers, Finland. ISSN 1796-203X, volume 2,
number 5, July 2007, pages 17-26.
D. Perez, I. Pascual, E. Alfonseca and P. Rodriguez,
Automatically generated inspectable learning models for
students. Presented at the International conferece
Artificial Intelligence for Education (AIED) and
published in Frontiers in Artificial Intelligence and
Education, IOS Press, The Netherlands. ISSN 0922-6389,
volume 158, July 2007, pages 632-634.
E. Alfonseca, P. Rodriguez and D. Perez, An approach
for automatic generation of adaptive hypermedia in
education with multilingual knowledge discovery
techniques. Computers & Education, Elsevier, United
Kingdom ISSN 0360-1315, volume 49, pages 495-513,
impact factor 1.085 according to the ISI Web of
Knowledge 2006.
D. Perez, E. Alfonseca, P. Rodriguez and I. Pascual,
Automatic generation of students' conceptual models
from answers in plain text. Proceedings of the
international conference User Modeling (UM), and
published in Lecture Notes in Artificial Intelligence,
Springer-Verlag, Germany. ISSN 0302-9743, volume 4511,
pages 329-333.
D. Perez, E. Alfonseca and P. Rodriguez, Pueden
los ordenadores evaluar automáticamente
preguntas abiertas?. In Novatica,
September-October 2006. ISSN 0211-2124, number 183,
pages 50-53.
D. Perez, E. Alfonseca and P. Rodriguez, A free-text
scoring system that generates conceptual models of the
students knowledge with the aid of clarifying
questions. International WorkShop Semantic Web for
E-learning (SWEL), Dublin (Ireland), June 2006, and
published in Lecture Notes in Learning and
Teaching. ISSN 1649-8623, pages 113-114.
D. Perez, I. Pascual, E. Alfonseca and P. Rodriguez,
Automatic Identification of Terms for the Generation of
Students Concept Maps. Proceedings of the international
conference in Multimedia and Information technologies
for the education (MICTE), Sevilla (Spain), November
2006. Published by Formatex, ISBN 978-84-690-2469-8,
volume 3, pages 2007-2011.
D. Perez, E. Alfonseca, P. Rodriguez and I. Pascual,
Willow: Automatic and adaptive assessment of students
free-text answers. Diana Pérez-MarÃn, Enrique
Alfonseca, Pilar RodrÃguez and Ismael Pascual-Nieto. In
proceedings of the 22nd International Conference of the
Spanish Society of Natural Language Processing (SEPLN),
Zaragoza (Spain), September 2006. Published in the
SEPLN journal, ISSN 1135-5948, number 37, pages
367-368.
D. Perez, E. Alfonseca, M. Freire, P. Rodriguez,
J. M. Guirao and A. Moreno-Sandoval, Automatic
Generation of Students' Conceptual Models underpinned
by Free-Text Adaptive Computer Assisted Assessment. In
proceedings of the international conference on Advanced
Learning Technologies (ICALT), IEEE Computer Society,
Kerkrade (The Netherlands), July 2006, pages 280-284.
D. Perez, E. Alfonseca and P. Rodriguez, On the dynamic
adaptation of Computer Assisted Assessment of free-text
answers. Proceedings of the International Conference on
Adaptive Hypermedia in Dublin (Ireland), June
2006. Published in LNCS 4018, Springer-Verlag, ISSN
0302-9743, pages 374-377.
D. Perez, A. Gliozzo, E. Alfonseca, C. Strapparava,
B. Magnini and P. Rodríguez,
About the effects of combining Latent Semantic Analysis
with other Natural Language Processing techniques for
free-text assessment. SIGNOS 38(59), pp. 325-343, 2005.
D. Pérez, O. Postolache, E. Alfonseca,
D. Cristea and P. Rodríguez, About the effects
of using Anaphora Resolution in Assessing Free-Text
Student Answers. In Proceedings of the
International Conference Recent Advances in Natural
Language Processing, RANLP-2005, Borovets,
Bulgaria, 2005 [pdf]
D. Pérez, E. Alfonseca and
P. Rodríguez. Adapting the automatic assessment
of free-text answers to the students. In the
Proceedings of the 9th International Computer-Assisted
Assessment (CAA) Conference.
E. Alfonseca, R. Carro, M. Freire, A. Ortigosa,
D. Pérez and P. Rodríguez. Authoring of
Adaptive Computer-Assisted Assessment of Free-text
Answers. ETS journal, Special Issue on Authoring of
Adaptable and Adaptive Educational Adaptive
Hypermedia. 2005.
D. Pérez, A. Gliozzo, C. Strappavara,
E. Alfonseca, P. Rodríguez and B. Magnini,
Automatic Assessment of Students' free-text Answers
underpinned by the Combination of a BLEU-inspired
algorithm and LSA. In proceedings of FLAIRS-2005 [pdf].
E. Alfonseca,
R. Carro, M. Freire, A. Ortigosa, D. Pérez and
M. Freire, Educational Adaptive Hypermedia meets
Computer-Assissted Assessment. Second International
Workshop on Authoring of Adaptive and Adaptable
Educational Hypermedia (AH-2004). [pdf].
E. Alfonseca and
D. Pérez, Automatic Assessment of
Open-ended Questions with a BLEU-inspired Algorithm and
Shallow NLP. Advances in Natural Language
Processing. Lecture Notes in Computer Science 3230,
pp. 25-35, 2004 [Abstract
and full paper] [local pdf].
D. Pérez, E. Alfonseca and P. Rodríguez,
Upper bounds and extension of the Bleu
algorithm applied to assessing student essays. In
Proceedings of the IAEA-2004 Conference,
Philadelphia, 2004
[pdf].
D. Pérez, E. Alfonseca and P. Rodríguez,
Application of the Bleu method for evaluating free-text
answers in an e-learning environment. In
Proceedings of the
Language Resources and Evaluation Conference
(LREC-2004), Lisbon, 2004
[pdf].
Others
E. Alfonseca. Writing a compiler's compiler with
APL. In Proceedings of the APL-98 Conference,
Rome, 1998. Published as E. Alfonseca, Writing a
compiler's compiler with APL, APL Quote Quad (ACM
SIGAPL), Vol. 29:3, p. 69-75, Mar. 1999.
M. Alfonseca, E. Alfonseca and J. de Lara, Compiling a
simulation language in APL. In Proceedings of the
APL-98 Conference, Rome, 1998. Published as
M. Alfonseca, E. Alfonseca and J. de
Lara. Compiling a simulation language in APL,
APL Quote Quad (ACM SIGAPL), Vol. 29:3, p. 105-109,
Mar. 1999.
Ph.D. Thesis
An approach for automatic generation of on-line information
systems based on the integration of Natural Language Processing and
Adaptive Hypermedia techniques
Abstract
It is a fact that the Internet has consolidated as a widely used mean
to convey information. It was soon appreciated that different people
access the web with different needs, a fact which motivated the
appearance of web sites that provided different information and were
structured in different ways depending on the user. Nowadays many
web-based systems store user profiles containing some characteristics
of the users. These profiles are used to decide which particular
information will be shown to each particular visitor, and how it will
be organised.
Moreover, different kinds of applications need to know different
characteristics of the users. For instance, e-commerce applications
use the shopping history and the user's tastes in order to suggest
further products; on-line educational systems keep track of the
concepts that have already been studied, and the tests that have been
successfully solved by the student; and on-line information systems
and retrieval applications have to know precisely the information
needs of the user in order to provide the most relevant data. In the
same way, the procedures for deciding the contents and structure of
the web sites in function of the user profiles vary across
applications.
Even though there are applications for authoring web sites,
constructing them is not yet particularly easy. Amongst the
limitations of current authoring tools for on-line information systems
are that the kinds of information stored in the user profiles or the
rules for adaptation are usually restricted to a few pre-defined
types; but, most importantly, they usually require the web author to
write all the particular chunks of texts that will be presented to the
different users. Therefore, the web author probably has to write as
many different versions of the same texts as the number of possible
user profiles that affect the contents of the site.
This work describes a framework that combines techniques from
different fields in order to create, in a fully automatic way, on-line
information systems from linear texts in electronic format, such as
textbooks. It borrows ideas from User Modelling and Adaptive
Hypermedia for storing and updating the user profiles, and for
changing the contents and the structure of the web site according to
them. Natural Language Techniques are also applied in order to gather
automatically information about the relevant terms found in the
original texts, and for adapting the output contents of the site,
using automatic filtering and summarisation techniques. The
architecture is divided into two steps: an off-line processing
step, which collects information about the original linear text, and
an on-line step, which executes when a user connects to the
system with a web browser, and the contents and hyperlinks are
generated.
The framework has been implemented as the Welkin system, which
has been used to build three adaptive on-line information sites in a
quick and easy way. Some controlled experiments have been performed
with real users aimed to provide positive feedback on the
implementation of the system.
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