Elias Iosif


This is my old webpage (whilst being PhD student, post-doc researcher at TUC). My new webpage can be found here

Short Bio. Elias Iosif received a PhD from the Department of Electronic and Computer Engineering, Technical University of Crete, Greece in Oct. 2013. Also, he holds a 5-year Diploma (2005) and a MS degree (2007) from the same department. Since 2007, he is a research assistant at the Department of Electronics and Computer Engineering, Technical University of Crete, Greece. In addition, from January 2014 he is a research assistant at the Athena Research and Innovation Center in Information, Athens, Greece. He is a member of the Cyprus Scientific and Technical Chamber since 2005 and IEEE member since 2008.

Research Interests. The core of my research is on the area of lexical semantics with particular focus on the Distributional Semantic Models (DSM). As part of my PhD research I proposed a network-based DSM approach for the computation of semantic similarity between words. My recent interests include the extension of this network approach towards the development of multimodal/multilingual semantic networks, and the creation of a compositional framework for computing the similarity between larger textual fragments, e.g., phrases and sentences. Parts of my work have been applied to various tasks including the affective analysis of text and creation of social networks from web-harvested data. My ongoing research also includes story analysis and corpus-based grammar induction for spoken dialogue systems.

EDUCATION

  • PhD from Department of Electronics and Computer Engineering, Technical University of Crete, 2013
    Thesis title: "Network-Based Distributional Semantic Models"
    Advisor: Prof. Alexandros Potamianos
  • Master of Science from Department of Electronics and Computer Engineering, Technical University of Crete., 2007
    Thesis title: "Unsupervised Induction of Semantic Classes Using Semantic Similarity Metrics"
    Advisor: Prof. Alexandros Potamianos
  • Five-year Diploma from Department of Electronics and Computer Engineering, Technical University of Crete, 2005
    Thesis title: "Automatic Derivation of Ontologies from Text"
    Advisor: Prof. Alexandros Potamianos

PUBLICATIONS

Journals

  1. Elias Iosif, Alexandros Potamianos. "Similarity Computation Using Semantic Networks Created From Web-Harvested Data". Natural Language Engineering, 2013.
    (DOI: 10.1017/S1351324913000144)
  2. Nikolaos Malandrakis, Alexandros Potamianos, Elias Iosif, Shrikanth~Narayanan. "Distributional Semantic Models for Affective Text Analysis". IEEE Transactions on Audio, Speech and Language Processing, 2013.
    (DOI: 10.1109/TASL.2013.2277931)
  3. Theodosis Moschopoulos, Elias Iosif, Leeda Demetropoulou, Alexandros Potamianos, Shrikanth Narayanan. "Towards the Automatic Extraction of Policy Networks using Web Links and Documents". IEEE Transactions on Knowledge and Data Engineering, 2012.
    (DOI: 10.1109/TKDE.2012.159)
  4. Elias Iosif, Alexandros Potamianos. "Unsupervised Semantic Similarity Computation Between Terms Using Web Documents". IEEE Transactions on Knowledge and Data Engineering, vol. 22, no. 11, pp. 1637-1647, 2010.
    (DOI: 10.1109/TKDE.2009.193)

Book Chapters

  1. Elias Iosif, Georgios Petasis and Vangelis Karkaletsis, "Ontology based Information Extraction under a Bootstrapping approach". In "Semi-Automatic Ontology Development: Processes and Resources", Maria Teresa Pazienza and Armando Stellato (Eds), IGI Global Inc., ISBN 9781466601888, 2012.
  2. Vangelis Karkaletsis, Pavlina Fragkou, Georgios Petasis, Elias Iosif. "Ontology Based Information Extraction from Text". In "Knowledge-Driven Multimedia Information Extraction and Ontology Evolution", George Paliouras, Constantine Spyropoulos and George Tsatsaronis (Eds), Springer Verlag, vol. 6050, ISBN 978-3-642-20794-5, 2011

Conferences

  1. Elias Iosif, Kalliopi Zervanou, Maria Giannoudaki, Alexandros Potamianos. "Word Semantic Similarity for Morphologically Rich Languages". In: Proc. 9th International Conference on Language Resources and Evaluation (LREC), Reykjavik, Iceland, May 2014 (to appear).
  2. Elisavet Palogiannidi, Ioannis Klasinas, Alexandros Potamianos, Elias Iosif. "Spoken Dialogue Grammar Induction from Crowdsourced Data". In: Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Florence, Italy, May 2014 (to appear).
  3. Ioannis Klasinas, Alexandros Potamianos, Elias Iosif, Spiros Georgiladakis, Gianluca Mameli. "Web Data Harvesting for Speech Understanding Grammar Induction". In: Proc. Interspeech, Lyon, France, 2013.
  4. Nikolaos Malandrakis, Elias Iosif, Vassiliki Prokopi, Alexandros Potamianos, Shrikanth Narayanan. "Deep Purple: Lexical, String and Affective Feature Fusion for Sentence-Level Semantic Similarity Estimation". In: Proc. *SEM '13: The Second Joint Conference on Lexical and Computational Semantics, Atlanta, USA, 2013.
  5. Elias Iosif, Alexandros Potamianos, Maria Giannoudaki, Kalliopi Zervanou, "Semantic Similarity Computation for Abstract and Concrete Nouns Using Network-Based Distributional Semantic Models". In: Proc. 10th International Conference for Computational Semantics (IWCS), Potsdam, Germany, 2013.
  6. Nikolaos Malandrakis, Elias Iosif and Alexandros Potamianos, "DeepPurple: Estimating Sentence Semantic Similarity using N-gram Regression Models and Web Snippets". In: Proc. *SEM '12: The First Joint Conference on Lexical and Computational Semantics, Montreal, Canada, 2012.
  7. Elias Iosif, Alexandros Potamianos, "SemSim: Resources for Normalized Semantic Similarity Com- putation Using Lexical Networks". In: Proc. 8th International Conference on Language Resources and Evaluation (LREC), Istanbul, Turkey, 2012.
  8. Elias Iosif, Maria Giannoudaki, Eric Fosler-Lussier, Alexandros Potamianos, "Associative and Se- mantic Features Extracted From Web-Harvested Corpora". In: Proc. 8th International Conference on Language Resources and Evaluation (LREC), Istanbul, Turkey, 2012.
  9. Nikolaos Malandrakis, Alexandros Potamianos, Elias Iosif and Shrikanth Narayanan, "EmotiWord: Af- fective Lexicon Creation with Application to Interaction and Multimedia Data". In: Proc. MUSCLE International Workshop on Computational Intelligence for Multimedia Understanding , Pisa, Italy, 2011.
  10. Nikolaos Malandrakis, Alexandros Potamianos, Elias Iosif, Shrikanth Narayanan. "Kernel models for affective lexicon creation". In Proc. of Interspeech, Florence, Italy, 2011
  11. Elias Iosif. "Unsupervised Web Name Disambiguation Using Semantic Similarity and Single-Pass Clustering". In: Proc. 6th Hellenic Conference on Artificial Intelligence (SETN), Athens, Greece, 2010.
  12. Elias Iosif, Alexandros Potamianos. "Unsupervised Semantic Similarity Computation Using Web Search Engines". In: Proc. IEEE/WIC/ACM International Conference on Web Intelligence (WI-2007), Silicon Valley, USA, 2007
  13. Elias Iosif, Alexandros Potamianos. "A Soft-Clustering Algorithm for Automatic Induction of Semantic Classes". In: Proc. Interspeech, Antwerp, Belgium, 2007
  14. Elias Iosif, Athanasios Tegos, Apostolos Pangos, Eric Fosler-Lussier, Alexandros Potamianos. "Unsupervised Combination of Metrics for Semantic Class Induction". In: Proc. IEEE/ACL International Workshop on Spoken Language Technology (SLT), Aruba, 2006
  15. Apostolos Pangos, Elias Iosif, Alexandros Potamianos, Eric Fosler-Lussier. "Combining Statistical Similarity Metrics for Automatic Induction of Semantic Classes". In: Proc. IEEE International Workshop on Automatic Speech Recognition and Understanding (ASRU), San Juan, Puerto Rico, 2005

DATA - TOOLS

Data and tools related with my research.
(Last update Feb 2014)


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