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Publications (26)
Here we report on the methodological approach adopted for the end-user evaluation studies carried out during the lifecycle of the EASIER project, focusing on the project's mobile app and avatar technologies. Evaluation was led by deaf consortium partners and performed in two cycles, involving both deaf signers and hearing sign language (SL) experts...
The Multilingual Sign Language Wordnet is the first publicly available wordnet resource for sign languages. It is a growing multilingual resource providing data for eight sign languages to date. During the initial phase of its creation, the focus lay on producing the infrastructure to support various languages and to produce initial sets of content...
Recent advances in sign language (SL) technologies, along with demand for SL education, have led to increased interest in developing tools that enable automatic assessment of learners’ SL video productions, helping both students and their instructors. At the very least, such tools should perform automatic SL recognition (SLR) of non-studio quality...
Although signing avatar technology seems to be the only option currently available to serve sign language (SL) display in the context of applications which demand generative capacity from the part of the technology like in machine translation to SL, signing avatars have not yet been accepted by signers' communities. One major factor for this reject...
This paper reports on the restructuring of a bilingual (Greek Sign Language, GSL – Modern Greek) lexicographic database with the use of the WordNet semantic and lexical database. The relevant research was carried out by the Institute for Language and Speech Processing (ILSP) / Athena R.C. team within the framework of the European project Easier. Th...
Wordnets have been a popular lexical resource type for many years. Their sense-based representation of lexical items and numerous relation structures have been used for a variety of computational and linguistic applications. The inclusion of different wordnets into multilingual wordnet networks has further extended their use into the realm of cross...
Greek Sign Language (GSL) was recognized as an official language in 2000 [1], but was not until 2017 [2] that it finally gained equal status with Modern Greek (MG). Considering the above facts, it is not surprising that available electronic resources in GSL are far from abundant. Even scarcer are original resources that have been generated by the d...
A common problem for the elderly population with mobility impairment is the difficulties in performing Activities of Daily Living (ADLs), that consequently leads to restrictions and the degradation of the living standards of the elders. When designing a user-centered assistive device for mobility constrained people, the variable spectrum of disabil...
Here we present the methodological principles and technologies, which compose the backbone of designing the i-Walk platform Human Robot Interaction (HRI) environment. The reported work builds upon experience gained from previous engagement with development of the multimodal HRI communication model of the MOBOT assistive robotic rollator and its end...
In this paper, we touch upon the requirement for accessibility via Sign Language as regards dynamic composition and exchange of new content in the context of natural language-based human interaction, and also the accessibility of web services and electronic content in written text by deaf and hard-of-hearing individuals. In this framework, one key...
Here we present the POLYTROPON parallel corpus for the language pair Greek Sign Language (GSL) – Modern Greek, which is created and annotated aiming to serve as a golden corpus available to the community of SL technologies for experimentation with various approaches to SL processing, focusing on machine learning for SL recognition, machine translat...
In this paper, we touch upon the requirement for accessibility via Sign Language as regards dynamic composition and exchange of new content in the context of natural language based human interaction, and also accessibility of web services and electronic content in written text by deaf and hard-of-hearing individuals. In this framework, one key issu...
Here we present how Greek Sign Language (GSL) has provided content to various functionalities of the Information System PYLES,
a management system for on-line lessons, designed to support accessible asynchronous e-learning by addressing learning needs of
students with various communication capabilities and needs, at the Technological Educational In...
In this paper, we report on the evaluation strategy and the results that were obtained from the final end-user evaluation process of an innovative robotic assistive device supporting mobility. More specifically, the paper deals with the evaluation of the MOBOT robotic rollator as regards to the system’s overall performance and its individual assist...
In this paper, we report on the evaluation strategy and results obtained from the final end-user evaluation process of an innovative robotic assistive device supporting mobility. More specifically, we report on the evaluation of the MOBOT robotic rollator as regards the system's overall performance and its individual assistive characteristics and f...
Accessibility of electronic content by deaf and hard-of-hearing WWW users is crucially depending on the possibility to acquire information that can be presented in their native sign language (SL), from the vast amounts of text sources being constantly uploaded. Similarly crucial is the ability to easily create new electronic content that can enable...
In this paper we discuss the integration of a communication model in the MOBOT assistive robotic platform and its evaluation by target users. The MOBOT platform envisions the development of cognitive robotic assistant prototypes that act proactively, adaptively and interactively with respect to elderly humans with slight walking and cognitive impai...
The MOBOT project has envisioned the development of cognitive robotic assistant prototypes that act proactively, adaptively and interactively with respect to elderly humans with slight walking and cognitive difficulties. To meet the project's goals, a multimodal action recognition system is being developed to monitor, analyse and predict user actio...
Acquisition and annotation of a multimodal-multisensory data set of human-passive rollator-carer interactions have enabled the analysis of related human behavioural patterns and the definition of the MOBOT human-robot communication model. The MOBOT project has envisioned the development of cognitive robotic assistant prototypes that act proactively...
This paper reports on work related to the modelling of Human-Robot Communication on the basis of multimodal and multisensory human behaviour analysis. A primary focus in this framework of analysis is the definition of semantics of human actions, i.e. verbal and non-verbal signals, in a specific context with distinct Human-Robot interaction states....
In this paper we touch upon the request for dynamic synthetic signing by discussing requirements for accessibility via Sign Language for information retrieval and dynamic composition of new content. The key issues remain the option for reuse of pre-existing signed “text” along with the exploitation of basic editing facilities similar to those avail...
This paper proposes the implementation of a post-processing stage to a grammar-based machine translation (MT) system from written into sign language for the pair written Greek–Greek sign language (GSL), where translation output is visualized by an avatar. Post-processing is applied on the output of the MT system’s transfer module by activating an e...
Previous work in the framework of the MOBOT European project has led to acquisition of a multimodal sensory corpus that is intended to become the primary source of data retrieval, data analysis and testing of the mobility assistive robot prototypes currently under development within the project. The rich and multi-layered annotation of this corpus...
The aim of the present work is to discuss a limited set of issues which concern the grammar modelling of Greek Sign Language (GSL) within the framework of improving the naturalness and more specifically the grammaticality of synthetic GSL signing. This preliminary study addresses the linguistic issues relating to specific grammar structures and the...
