The emerging paradigm of Federated Learning enables mobile users to collaboratively train a model without disclosing their privacy-sensitive data. Nevertheless, data collected from different may not be independent and identically distributed. Thus directly applying the trained new user usually leads performance degradation due so-called domain shift. Unsupervised Domain Adaptation is an effecti...

The aim of this paper is to provide an overview for the research that has been done so far in signcryption area. The paper also presents the extensions for the signcryption scheme and discusses the security in signcryption and the practical application of signcryption in real life. Because the elliptic curve cryptography became the newest and most efficient method for public key cryptography, i...

We are developing an ECA (Embodied Communicational Agent) system in Hungarian language. The ECA has to be able to carry out general chat conversations and domain specific discussions as well. The structure of the dialogue graph and the attributes of the graph nodes have to support the success of the conversation: user utterance understanding and responding, as well as repairing the “non-underst...

Information technology has long been recognised as a cause of organisational change. Recent developments in information technology (IT) media have stimulated considerable interest in how they will impact business organizations. Studies have largely examined the role that IT plays in improving information efficiency and synergies, in promoting collaboration and information sharing both inside an...