Dataflow Processing and Optimization on Grid and Cloud Infrastructures. - Manolis M. Tsangaris; George Kakaletris; Herald Kllapi; Giorgos Papanikos; Fragkiskos Pentaris; Paul Polydoras; Eva Sitaridi; Vassilis Stoumpos; Yannis E. Ioannidis (IEEE Data Eng. Bull., 2009)

Flexible use of cloud resources through profit maximization and price discrimination. - Konstantinos Tsakalozos; Herald Kllapi; Eva Sitaridi; Mema Roussopoulos; Dimitris Paparas; Alex Delis (ICDE, 2011)

Schedule optimization for data processing flows on the cloud. - Herald Kllapi; Eva Sitaridi; Manolis M. Tsangaris; Yannis E. Ioannidis (SIGMOD Conference, 2011)

AITION: A Scalable Platform for Interactive Data Mining. - Harry Dimitropoulos; Herald Kllapi; Omiros Metaxas; Nikolas Oikonomidis; Eva Sitaridi; Manolis M. Tsangaris; Yannis E. Ioannidis (SSDBM, 2012)

Optique: OBDA Solution for Big Data. - Diego Calvanese; Martin Giese; Peter Haase 001; Ian Horrocks 001; Thomas Hubauer; Yannis E. Ioannidis; Ernesto Jiménez-Ruiz; Evgeny Kharlamov; Herald Kllapi; Johan W. Klüwer; Manolis Koubarakis; Steffen Lamparter; et al. (ESWC (Satellite Events), 2013)

Optique: Towards OBDA Systems for Industry. - Evgeny Kharlamov; Ernesto Jiménez-Ruiz; Dmitriy Zheleznyakov; Dimitris Bilidas; Martin Giese; Peter Haase 001; Ian Horrocks 001; Herald Kllapi; Manolis Koubarakis; Özgür L. Özçep; Mariano Rodriguez-Muro; Riccardo Rosati 001; et al. (ESWC (Satellite Events), 2013)

The Optique Project: Towards OBDA Systems for Industry (Short Paper). - Diego Calvanese; Martin Giese; Peter Haase 001; Ian Horrocks 001; Thomas Hubauer; Yannis E. Ioannidis; Ernesto Jiménez-Ruiz; Evgeny Kharlamov; Herald Kllapi; Manolis Koubarakis; Steffen Lamparter; Ralf Möller 001; et al. (OWLED, 2013)

Distributed Query Processing on the Cloud: the Optique Point of View (Short Paper). - Herald Kllapi; Dimitris Bilidas; Ian Horrocks 001; Yannis E. Ioannidis; Ernesto Jiménez-Ruiz; Evgeny Kharlamov; Manolis Koubarakis; Dmitriy Zheleznyakov (OWLED, 2013)

Near neighbor join. - Herald Kllapi; Boulos Harb; Cong Yu 001 (ICDE, 2014)

Elastic Processing of Analytical Query Workloads on IaaS Clouds. - Herald Kllapi; Panos Sakkos; Alex Delis; Dimitrios Gunopulos; Yannis E. Ioannidis (CoRR, 2015)

Elastic dataflow processing on the cloud - Herald Kllapi (2015)

Real time processing of streaming and static information. - Christoforos Svingos; Theofilos Mailis; Herald Kllapi; Lefteris Stamatogiannakis; Yannis Kotidis; Yannis E. Ioannidis (IEEE BigData, 2016)

Social Hash: An Assignment Framework for Optimizing Distributed Systems Operations on Social Networks. - Alon Shalita; Brian Karrer; Igor Kabiljo; Arun Sharma; Alessandro Presta; Aaron Adcock; Herald Kllapi; Michael Stumm (NSDI, 2016)

Automated Management of Indexes for Dataflow Processing Engines in IaaS Clouds. - Herald Kllapi; Ilia Pietri; Verena Kantere; Yannis E. Ioannidis (EDBT, 2020)