Dimitra Anastasiou


2022

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ENRICH4ALL: A First Luxembourgish BERT Model for a Multilingual Chatbot
Dimitra Anastasiou
Proceedings of the 1st Annual Meeting of the ELRA/ISCA Special Interest Group on Under-Resourced Languages

Machine Translation (MT)-empowered chatbots are not established yet, however, we see an amazing future breaking language barriers and enabling conversation in multiple languages without time-consuming language model building and training, particularly for under-resourced languages. In this paper we focus on the under-resourced Luxembourgish language. This article describes the experiments we have done with a dataset containing administrative questions that we have manually created to offer BERT QA capabilities to a multilingual chatbot. The chatbot supports visual dialog flow diagram creation (through an interface called BotStudio) in which a dialog node manages the user question at a specific step. Dialog nodes can be matched to the user’s question by using a BERT classification model which labels the question with a dialog node label.

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A Machine Translation-Powered Chatbot for Public Administration
Dimitra Anastasiou | Anders Ruge | Radu Ion | Svetlana Segărceanu | George Suciu | Olivier Pedretti | Patrick Gratz | Hoorieh Afkari
Proceedings of the 23rd Annual Conference of the European Association for Machine Translation

This paper is about a multilingual chatbot developed for public administration within the CEF funded project ENRICH4ALL. We argue for multi-lingual chatbots empowered through MT and discuss the integration of the CEF eTranslation service in a chatbot solution.

2020

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The European Language Technology Landscape in 2020: Language-Centric and Human-Centric AI for Cross-Cultural Communication in Multilingual Europe
Georg Rehm | Katrin Marheinecke | Stefanie Hegele | Stelios Piperidis | Kalina Bontcheva | Jan Hajič | Khalid Choukri | Andrejs Vasiļjevs | Gerhard Backfried | Christoph Prinz | José Manuel Gómez-Pérez | Luc Meertens | Paul Lukowicz | Josef van Genabith | Andrea Lösch | Philipp Slusallek | Morten Irgens | Patrick Gatellier | Joachim Köhler | Laure Le Bars | Dimitra Anastasiou | Albina Auksoriūtė | Núria Bel | António Branco | Gerhard Budin | Walter Daelemans | Koenraad De Smedt | Radovan Garabík | Maria Gavriilidou | Dagmar Gromann | Svetla Koeva | Simon Krek | Cvetana Krstev | Krister Lindén | Bernardo Magnini | Jan Odijk | Maciej Ogrodniczuk | Eiríkur Rögnvaldsson | Mike Rosner | Bolette Pedersen | Inguna Skadiņa | Marko Tadić | Dan Tufiș | Tamás Váradi | Kadri Vider | Andy Way | François Yvon
Proceedings of the Twelfth Language Resources and Evaluation Conference

Multilingualism is a cultural cornerstone of Europe and firmly anchored in the European treaties including full language equality. However, language barriers impacting business, cross-lingual and cross-cultural communication are still omnipresent. Language Technologies (LTs) are a powerful means to break down these barriers. While the last decade has seen various initiatives that created a multitude of approaches and technologies tailored to Europe’s specific needs, there is still an immense level of fragmentation. At the same time, AI has become an increasingly important concept in the European Information and Communication Technology area. For a few years now, AI – including many opportunities, synergies but also misconceptions – has been overshadowing every other topic. We present an overview of the European LT landscape, describing funding programmes, activities, actions and challenges in the different countries with regard to LT, including the current state of play in industry and the LT market. We present a brief overview of the main LT-related activities on the EU level in the last ten years and develop strategic guidance with regard to four key dimensions.

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“You move THIS!”: Annotation of Pointing Gestures on Tabletop Interfaces in Low Awareness Situations
Dimitra Anastasiou | Hoorieh Afkari | Valérie Maquil
Proceedings of LREC2020 Workshop "People in language, vision and the mind" (ONION2020)

This paper analyses pointing gestures during low awareness situations occurring in a collaborative problem-solving activity implemented on an interactive tabletop interface. Awareness is considered as crucial requirement to support fluid and natural collaboration. We focus on pointing gestures as strategy to maintain awareness. We describe the results from a user study with five groups, each group consisting of three participants, who were asked to solve a task collaboratively on a tabletop interface. The ideal problem-solving solution would have been, if the three participants had been fully aware of what their personal area is depicting and had communicated this properly to the peers. However, often some participants are hesitant due to lack of awareness, some other want to take the lead work or expedite the process, and therefore pointing gestures to others’ personal areas arise. Our results from analyzing a multimodal corpus of 168.68 minutes showed that in 95% of the cases, one user pointed to the personal area of the other, while in a few cases (3%) a user not only pointed, but also performed a touch gesture on the personal area of another user. In our study, the mean for such pointing gestures in low awareness situations per minute and for all groups was M=1.96, SD=0.58.

2014

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Proceedings of the 5th Workshop on Speech and Language Processing for Assistive Technologies
Jan Alexandersson | Dimitra Anastasiou | Cui Jian | Ani Nenkova | Rupal Patel | Frank Rudzicz | Annalu Waller | Desislava Zhekova
Proceedings of the 5th Workshop on Speech and Language Processing for Assistive Technologies

2012

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A Speech and Gesture Spatial Corpus in Assisted Living
Dimitra Anastasiou
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

Ambient Assisted Living (AAL) is the name for a European technology and innovation funding programme. AAL research field is about intelligent assistant systems for a healthier and safer life in the preferred living environments through the use of Information and Communication Technologies (ICT). We focus specifically on speech and gesture interaction which can enhance the quality of lifestyle of people living in assistive environments, be they seniors or people with physical or cognitive disabilities. In this paper we describe our user study conducted in a lab at the University of Bremen in order to collect empirical speech and gesture data and later create and analyse a multimodal corpus. The user study is about a human user sitting in a wheelchair and performing certain inherently spatial tasks.

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Proceedings of the 1st Workshop on Speech and Multimodal Interaction in Assistive Environments
Dimitra Anastasiou | Desislava Zhekova | Cui Jian | Robert Ross
Proceedings of the 1st Workshop on Speech and Multimodal Interaction in Assistive Environments

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Speech and Gesture Interaction in an Ambient Assisted Living Lab
Dimitra Anastasiou | Cui Jian | Desislava Zhekova
Proceedings of the 1st Workshop on Speech and Multimodal Interaction in Assistive Environments

2009

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Proceedings of the Workshop on Multiword Expressions: Identification, Interpretation, Disambiguation and Applications (MWE 2009)
Dimitra Anastasiou | Chikara Hashimoto | Preslav Nakov | Su Nam Kim
Proceedings of the Workshop on Multiword Expressions: Identification, Interpretation, Disambiguation and Applications (MWE 2009)

2008

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Identification of idioms by machine translation: a hybrid research system vs. three commercial systems
Dimitra Anastasiou
Proceedings of the 12th Annual conference of the European Association for Machine Translation