Leonidas Papachristopoulos

TL;DR: A robust multidimensional metadata quality evaluation model that measures metadata quality based on five metrics and by taking into account contextual parameters concerning metadata generation and use is proposed.

TL;DR: The directions and the evolution of evaluation research for the period 2001–2011 are explored by studying the evaluation initiatives presented at 2 main conferences of the digital library domain, namely the Association for Computing Machinery and the Institute of Electrical and Electronics Engineers (ACM/IEEE) Joint Conference on Digital Libraries (JCDL) and the European Conference on digital Libraries (ECDL).

TL;DR: A data mining methodology is proposed to identify prominent patterns in the evaluation of digital libraries, highlighting the expressive nature of DiLEO, place emphasis on semantic annotation as a necessary step in handling domain-centric corpora and underline the potential of the proposed methodology in the profiling of evaluation activities.

TL;DR: This study proposes a probabilistic topic modeling implemented on a domain corpus from the JCDL, ECDL/TDPL and ICADL conferences proceedings in the period 2001-2013, aiming at the unveiling of its topics and subject temporal analysis, for exploiting and extracting semantic metadata from large corpora in an automatic way.

TL;DR: The current study proposes the use of Sentiment analysis on user comments about Hellenic Open University Distance Library and Information Center which were included to the institutional annual survey.