4 citations · 7 across the 2 of their papers we have counts for
4 papers
QueryER: A Framework for Fast Analysis-Aware Deduplication over Dirty Data
Giorgos Alexiou, George Papastefanatos, Vassilis Stamatopoulos +2
In this work, we explore the problem of correctly and efficiently answering complex SPJ queries issued directly on top of dirty data. We introduce QueryER, a framework that seamles…
Hierarchical Characteristic Set Merging for Optimizing SPARQL Queries in Heterogeneous RDF
Marios Meimaris, George Papastefanatos
Characteristic sets (CS) organize RDF triples based on the set of properties characterizing their subject nodes. This concept is recently used in indexing techniques, as it can cap…
Towards Scalable Visual Exploration of Very Large RDF Graphs
Nikos Bikakis, John Liagouris, Maria Krommyda +2
In this paper, we outline our work on developing a disk-based infrastructure for efficient visualization and graph exploration operations over very large graphs. The proposed platf…
A Framework for Managing Evolving Information Resources on the Data Web
Marios Meimaris, George Papastefanatos, Christos Pateritsas +2
The web of data has brought forth the need to preserve and sustain evolving information within linked datasets; however, a basic requirement of data preservation is the maintenance…