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Charalambos Themistocleous

Postdoctor

Charalambos Themistocleous
Postdoctor
Computational Linguistics
themistocleous@gmail.com
+46 31 786 1176
0725-796306

Room number: 305
Postal Address: Box 200, 40530 Göteborg
Visiting Address: Dicksonsgatan 4 , 41256 Göteborg


Department of Philosophy, Linguistics, Theory of Science (More Information)
Box 200
40530 Göteborg
www.flov.gu.se
flov@flov.gu.se

Visiting Address: Olof wijksgatan 6 , 41255 Göteborg

About Charalambos Themistocleous

As of January 2016, I am a postdoctoral researcher in computational linguistics and phonetics in the Centre for Linguistic Theory and Studies in Probability, Department of Philosophy, Linguistics and Theory of Science at the University of Gothenburg, Gothenburg Sweden. Previously, I was a visiting scholar at Princeton University, and a temporary lecturer at the University of Cyprus. For more information, see my Curriculum Vitae.

Personal Website: https://charalambosthemistocleous.com

Research
Natural Language Processing

The impressive achievements in areas, such as text-to-speech, speech perception, machine translation, image description generation, and semantic interpretation of the past decade were made possible by employing methods from signal processing, NLP, AI, and machine learning. Methods, such as Deep Neural Networks, SVMs, HMMs, can offer insights about human perception and cognition, namely how humans perceive, process, and store information from speech signals, texts, vision, etc., and also how they encode information. Within this framework, I explore the intersection between speech perception/production and language understanding.

Speech Sounds
Speech sounds, the vowels and consonants, are elements of speech communication. I study these sounds as complex multimodal structures and try to understand how there acoustic properties (vowel formants, spectral information, etc.,) convey multimodal linguistic information, such as the place of articulation for consonants, and sociolinguistic information, that is information about the dialect of the speaker—a speaker from California or Canada—, the gender, age, etc. The linguistic properties and sociolinguistic variation are encoded in the speech signal. I combine Machine Learning and experimental approaches to find more information about these issues.

Themistocleous, Charalambos (in press). Modern Greek vowels and the nature of acoustic gradience. Phonetica. 
Themistocleous, Charalambos (2016). The bursts of stops can convey dialectal information. Journal of the Acoustical Society of America. 140(4), EL334-EL340 http://dx.doi.org/10.1121/1.4964818 |Link| |Pdf|

Prosody
The melody of speech, also known as prosody, marks constituents in speech as prominent, designates the boundaries of domains (such as the prosodic word and the prosodic phrase), and conveys different melodies (as in questions, statements, and commands). A number of studies have shown that the melody of speech is structured. Understanding this structure and how this structure interacts with the overall cognition and understanding of information is a central objective of my research.

Themistocleous, Charalambos (2015). Seeking an anchorage: Evidence from the tonal alignment of the Cypriot Greek prenuclear pitch accent. Language and Speech. Advance on-line publication, doi: 10.1177/0023830915614602. |Link|
Themistocleous, Charalambos (2014). Edge-Tone Effects and Prosodic Domain Effects on Final Lengthening. Linguistic Variation. 14(1). 129–160. |Link|
Themistocleous, Charalambos (2014). Prosody and Information Structure in Greek (Prosodia kai plirophoriaki domi stin Ellinici). PhD Thesis. University of Athens Greece.
 

Latest publications

Acquiring Clitic Placement in Bilectal Settings: Interactions between Social Factors
Kleanthes Grohmann, Elena Papadopoulou, Charalambos Themistocleous
Frontiers in Communication, Journal article 2017
Journal article

Standard Modern Greek and Cypriot Greek vowels: a sociophonetic study
Charalambos Themistocleous, Angeliki Logotheti
Proceedings of the international conference on Modern Greek dialects and Linguistic Theory, Journal article 2016
Journal article

The bursts of stops can convey dialectal information
Charalambos Themistocleous
Journal of the Acoustical Society of America, Journal article 2016
Journal article

Effects of stress on fricatives: Evidence from Standard Modern Greek
Charalambos Themistocleous, Angelandria Savva, Andrie Aristodemou
Interspeech 2016 8-12 Sep 2016, San Francisco, USA / Nelson Morgan , Conference paper 2016
Conference paper

The Acoustics of Cypriot Greek Fricatives
Andrie Aristodemou, Angelandria Savva, Charalambos Themistocleous
Proceedings of the 6th ISEL Conference on Experimental Linguistics ExLing 2015 26 - 27 June 2015 Athens, Greece Edited by Antonis Botinis , Athens, University of Athens, Conference paper 2015
Conference paper

The intonation of Albanian polar questions and statements
Charalambos Themistocleous, Daniela Müller
6th International Conference of Experimental Linguistics. ExLing 2015. 26-27 June 2015, Athens, Greece / Edited by Antonis Botinis, Athens, University of Athens, Conference paper 2015
Conference paper

Addressing writing system issues in dialectal lexicography: the case of Cypriot Greek
Spyros Armosti, Kyriaci Christodoulou, Marianna Katsoyannou, Charalambos Themistocleous
Dialogue on Dialect Standardization / editor(s): Carrie Dyck, Tania Granadillo, Keren Rice, Jorge Emilio Rosés Labrada , Newcastle, Cambridge Scholars Publishing, Chapter in book 2014
Chapter in book

Showing 1 - 10 of 24

2017

Acquiring Clitic Placement in Bilectal Settings: Interactions between Social Factors
Kleanthes Grohmann, Elena Papadopoulou, Charalambos Themistocleous
Frontiers in Communication, Journal article 2017
Journal article

2016

Standard Modern Greek and Cypriot Greek vowels: a sociophonetic study
Charalambos Themistocleous, Angeliki Logotheti
Proceedings of the international conference on Modern Greek dialects and Linguistic Theory, Journal article 2016
Journal article

The bursts of stops can convey dialectal information
Charalambos Themistocleous
Journal of the Acoustical Society of America, Journal article 2016
Journal article

Effects of stress on fricatives: Evidence from Standard Modern Greek
Charalambos Themistocleous, Angelandria Savva, Andrie Aristodemou
Interspeech 2016 8-12 Sep 2016, San Francisco, USA / Nelson Morgan , Conference paper 2016
Conference paper

2015

The Acoustics of Cypriot Greek Fricatives
Andrie Aristodemou, Angelandria Savva, Charalambos Themistocleous
Proceedings of the 6th ISEL Conference on Experimental Linguistics ExLing 2015 26 - 27 June 2015 Athens, Greece Edited by Antonis Botinis , Athens, University of Athens, Conference paper 2015
Conference paper

The intonation of Albanian polar questions and statements
Charalambos Themistocleous, Daniela Müller
6th International Conference of Experimental Linguistics. ExLing 2015. 26-27 June 2015, Athens, Greece / Edited by Antonis Botinis, Athens, University of Athens, Conference paper 2015
Conference paper

2014

Addressing writing system issues in dialectal lexicography: the case of Cypriot Greek
Spyros Armosti, Kyriaci Christodoulou, Marianna Katsoyannou, Charalambos Themistocleous
Dialogue on Dialect Standardization / editor(s): Carrie Dyck, Tania Granadillo, Keren Rice, Jorge Emilio Rosés Labrada , Newcastle, Cambridge Scholars Publishing, Chapter in book 2014
Chapter in book

Showing 1 - 10 of 24

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