Recent Research Prototypes and Technology Offerings

This page contains links to recent research prototypes, tools and systems developed under my supervision (apologies is some are down). Leaflets are included in some cases. A few slides that synopsize the related research activities are available here

Exploratory (Web) Searching

• RDFsim: Similarity-based Parallel Browsing of DBpedia. First release: 2021
• Elas4RDF: Keyword Search over RDF. First release: 2020
• X-Search: Semantic Post-Processing of Search Results. First release: 2013 (leaflet, poster)
• Hippalus: Preference-Enriched Faceted Exploration. First release: 2013 (leaflet, poster)
• IOS : A family of novel services for exploratory search. First release: 2012
• Mitos : A Web Search Engine (with emphasis on exploratory search). First release: 2007?
• StellaSearch : A Meta Search Engine over Google offering real time results clustering. First release: 2009
• FleXplorer : A general purpose API for supporting exploratory search. First release: 2009
• SofoKles : A tool for evaluating natural language stemmers. First release: 2008

Semantic Data Management

• RDFsim: Similarity-based Parallel Browsing of DBpedia. First release: 2021
• Elas4RDF: Keyword Search over RDF. First release: 2020
• GRSF-API: a collection of services exposing the contents of semantic warehouses - focused on stocks and fisheries management. First release: 2020
• 3D LOD : Interactive 3D Visualization of the LOD Cloud. First release 2016
• LODsyndesis : Indexes, algorithms, services and measurements about the connectivity of the entire LOD cloud. First release 2016 (leaflet, poster)
• SPARQL-LD : An extension of SPARQL 1.1 Federated Query that allows to use in the SERVICE operator any Web resource (URI/IRI) containing RDF data. First release 2016 (leaflet, poster)
• X-Link : A configurable, Linked Data-based, Named Entity Extraction tool. First release 2014 (leaflet)
• MatWare : Tool for automating the creation of Semantic Warehouses. First release 2014 (leaflet)
• Bnodeland (the land of blank nodes): Compare RDF Graphs with Bnode Matching! First release 2012. Also a generator of synthetic data. First release 2014 (leaflet)
• RIMQA (RDF Instance Migration Quality Assistant) : A tool for quality management after schema migration. First release: 2012.
• StarLion : A tool for visualizing RDFS ontologies (with emphasis on top-K diagrams and on exploration services). First release: 2008

Digital Preservation (tools and systems)

• SIPArchiver: a tool to support the construction of Submission Information Packages (according to OAIS) for digital imaging products. First release 2021.
• Epimenidis: Automated Reasoning for Digital Preservation. First release 2013 (leaflet)
• PreScan: Automated extraction of file-embedded metadata from file systems. First release: 2008 (leaflet)
• GapManager : A dependency management system for the preservation of digital objects. First release: 2008

Visualization (tools and systems)

• CoSpi: Concentric Spiral: A Spiral-like Method to Place in the Space (and Interact with) too Many Values. First release 2021

Ontologies

• MarineTLO: A top-level ontology for the marine domain. First release 2012. (leaflet)
• VoID Warehouse Ontology (voidwh): An extension of VoID for semantic warehouses. First release 2014. (related paper)

Other Useful Tools and Datasets

Datasets

• GMW-Greek Misspelled Words First release 2021
• CS563-QA: An Evaluation Collection for Question Answering First release 2019
• Connectivity of LOD Datasets. First release 2016.

Android Applications

• Java Quotes: First release 2015.
• QuizzerZone: First release 2016.
• PascoLink: First release 2016.