Organizer/Editor/Chair. IEEE Computer Graphics & Applications 2021 [Guest Editor], BigVis 2024-2018 [Organizer/General Chair], Big Data Research 2025, 2020 & 2018, Elsevier [Guest Editor], Frontiers in Big Data [Associate Editor], MDM 2021 [Publicity Chair], EDBT 2021 [Session Chair], Journal of Web Semantics, Elsevier [Guest Editorial Board], Open Journal of databases [Associate Editor], DASFAA 2014 [Session Chair]

Program Committee Member [partial list]. WWW [2022-2025], SIMGOD [2023-2025], VLDB [2025], EDBT/ICDT [2021-2025], DASFAA [2021-2026] [Senior PC], CIKM [2019-2023]

Reviewer [partial list]. VLDB Journal, IEEE TKDE, ACM TKDD, IEEE TVCG, ACM TWEB, Bioinformatics, Information Systems, Semantic Web Journal, World Wide Web Journal, etc.

Bikakis N., Chrysanthis P., Li G., Papastefanatos G., Lingyun Y.: Visual Analytics Challenges and Trends in the Age of AI: The BigVis Community Perspective,   new

Bikakis N., Papastefanatos G., Chrysanthis P.K., Papemmanuil O., Auber D., Frey S., Fujishiro I., Hauptmann H., Liu S., Ma K-L., Schreck T., Sedlmair M., Sharaf M.: Visualizing, Exploring & Analyzing Big Data: A 6-Year Story, SIGMOD Record 2024   new

Stratigi M., Bikakis N., Stefanidis K.: Counterfactual Explanations for Group Recommendations, 27th intl. workshop on design, optimization, languages & analytical processing of big data (DOLAP '25)   new

Maroulis S., Bikakis N., Stamatopoulos V., Papastefanatos G.: Adaptive Indexing for Approximate Query Processing in Interactive Data Analysis, 2025 [under review]

Maroulis S., Bikakis N., Stamatopoulos V., Papastefanatos G.: Partial Adaptive Indexing for Approximate Query Answering, intl. workshop on big data visual exploration & analytics (BigVis '24)   new

Maroulis S., Bikakis N., Papastefanatos G., Vassiliadis P., Vassiliou Y.: Resource-Aware Adaptive Indexing for In-situ Visual Exploration and Analytics, VLDB Journal 2023 [poster] [code] [home]

Bikakis N., Giannopoulos G., Sidiropoulos N., Flouda C., Doupas A., Giouli V., Karioris P., Botini P., Vacalopoulou A., Stainhaouer G.: Exposing Geospatial Cultural Heritage Content in Map-based Applications, intl. workshop on big data visual exploration & analytics (BigVis '23)

Giouli V., Vacalopoulou A., Sidiropoulos N., Flouda C., Doupas A., Giannopoulos G., Bikakis N.,Kaffes V., Stainhaouer G.: Placing multi-modal, and multi-lingual Data in the Humanities Domain on the Map: the Mythotopia Geo-tagged Corpus, 13th intl. conf. on language resources & evaluation (LREC 22)

Papastefanatos G., Alexiou G., Bikakis N., Maroulis S., Stamatopoulos V.: VisualFacts: A Platform for In-Situ Visual Exploration and Real-time Entity Resolution, intl. workshop on big data visual exploration & analytics (BigVis '22)

Maroulis S., Bikakis N., Papastefanatos G., Vassiliadis P., Vassiliou Y.: RawVis: A System for Efficient In-situ Visual Analytics, intl. conf. on Management of Data (ACM SIGMOD/PODS '21) [poster] [code] [video] [home]

Bikakis N., Maroulis S., Papastefanatos G., Vassiliadis P.: In-Situ Visual Exploration over Big Raw Data, information systems, Elsevier, 2021 [poster] [code] [home]

Bikakis N.: Big Data Visualization Tools, Encyclopedia of big data technologies, 2nd ed, Springer 2022 [springer]

Maroulis S., Bikakis N., Papastefanatos G., Vassiliadis P., Vasiliou Y.: Adaptive Indexing for In-situ Visual Exploration and Analytics, 23rd intl. workshop on design, optimization, languages and analytical processing of big data (DOLAP '21)

Andrienko G., Andrienko N., Drucker S., Fekete J.-D., Fisher D., Idreos S., Kraska T., Li G., Ma K.-L., Mackinlay J.D., Oulasvirta A., Schreck A., Schmann H., Stonebraker M., Auber D., Bikakis N., Chrysanthis P.K., Papastefanatos G., Sharaf M.: Big Data Visualization and Analytics: Future Research Challenges and Emerging Applications 3rd intl. workshop on big data visual exploration & analytics (BigVis '20)     > SIGMOD Blog Posts [Part 1] [Part 2]

Po L., Bikakis N., Desimoni F., Papastefanatos G.: Linked Data Visualization: Techniques, Tools and Big Data, Springer / Morgan & Claypool 2020     [home] [sample] [BibTeX]   [Among the top-5 most downloaded book (in 2020) in the Data, Semantics, and Knowledge series, Morgan & Claypool Publishers, 2021]

Bikakis N., Kalogeraki V., Gunopulos D.: Attendance Maximization for Successful Social Event Planning, 22nd intl. conf. on extending database technology (EDBT '19)

Bikakis N.: Big Data Visualization Tools, encyclopedia of big data technologies, Springer 2019

Bikakis N., Kalogeraki V., Gunopulos D.: Social Event Scheduling, 34th IEEE intl. conf. on data engineering (ICDE '18)   [preview]

Bikakis N., Maroulis S., Papastefanatos G., Vassiliadis P.: RawVis: Visual Exploration over Raw Data, 22nd european conf. on advances in databases & information systems (ADBIS 2018)   [Best Paper Award]  

Bikakis N., Liagouris J., Krommyda M., Papastefanatos G., Sellis T.: graphVizdb: A Scalable Platform for Interactive Large Graph Visualization, 32nd IEEE intl. conf. on data engineering (ICDE '16)   [preview]

Bikakis N., Sellis T.: Exploration and Visualization in the Web of Big Linked Data: A Survey of the State of the Art, 6th intl. workshop on linked web data management (LWDM '16)

Bikakis N., Papastefanatos G., Skourla M., Sellis T.: A Hierarchical Aggregation Framework for Efficient Multilevel Visual Exploration and Analysis, semantic web journal (SWJ), 2016

Bikakis N., Benouaret K., Sacharidis D.: Finding Desirable Objects under Group Categorical Preferences, knowledge & information systems journal (KAIS), 2015

Bikakis N., Liagouris J., Krommyda M., Papastefanatos G., Sellis T.: Towards Scalable Visual Exploration of Very Large RDF Graphs, 12th extended semantic web conference (ESWC '15)   [Best Poster/Short Paper Award]

Bouros P., Sacharidis D., Bikakis N.: Regionally Influential Users in Location-Aware Social Networks, 22nd ACM intl. conf. on advances in geographic information systems (ACM GIS SIGSPATIAL '14)   [preview]

Bikakis N., Tsinaraki C., Stavrakantonakis I., Christodoulakis S.: Supporting SPARQL Update Queries in RDF-XML Integration, 13th intl. semantic web conference (ISWC '14)   [preview]

Bikakis N., Sacharidis D., Sellis T.: A Study on External Memory Scan-based Skyline Algorithms, 25th intl. conf. on database & expert systems applications (DEXA '14)

Bikakis N., Skourla M., Papastefanatos G.: rdf:SynopsViz - A Framework for Hierarchical Linked Data Visual Exploration and Analysis, 11th extended semantic web conference (ESWC '14)

Bikakis N., Benouaret K., Sacharidis D.: Reconciling Multiple Categorical Preferences with Double Pareto-based Aggregation, 19th intl. conf. on database systems for advanced applications (DASFAA '14)   [technical report]

Bikakis N., Tsinaraki C., Stavrakantonakis I., Gioldasis N., Christodoulakis S.: The SPARQL2XQuery Interoperability Framework, world wide web journal (WWWJ), 2013   [technical report]

Bikakis N., Giannopoulos G., Liagouris J., Skoutas D., Dalamagas T., Sellis T.: RDivF: Diversifying Keyword Search on RDF Graphs, 17th intl. conf. on theory & practice of digital libraries (TPDL '13)   [preview]

Bikakis N., Tsinaraki C., Gioldasis N., Stavrakantonakis I., Christodoulakis S.: The XML and Semantic Web Worlds: Technologies, Interoperability and Integration. A survey of the State of the Art, semantic hyper/multi-media adaptation: schemes & applications, Springer 2013

Dalamagas T., Bikakis N., Papastefanatos G., Stavrakas Y., Hatzigeorgiou A.: Publishing Life Science Data as Linked Open Data: the Case Study of miRBase, 1st intl. workshop on open data (WOD '12)

Makris K., Bikakis N., Gioldasis N., Christodoulakis S.: SPARQL-RW: Transparent Query Access over Mapped RDF Data Sources, 15th intl. conf. on extending database technology (EDBT '12)   [preview]

Stavrakantonakis I., Tsinaraki C., Bikakis N., Gioldasis N., Christodoulakis S.: SPARQL2XQuery 2.0: Supporting Semantic-based Queries over XML Data, 5th intl. workshop on semantic media adaptation & personalization (SMAP '10)

Makris K., Gioldasis N., Bikakis N., Christodoulakis S.: Ontology Mapping and SPARQL Rewriting for Querying Federated RDF Data Sources, 9th intl. conf. on ontologies, databases, & applications of semantics (ODBASE '10)   [technical report]

Bikakis N., Giannopoulos G., Dalamagas T., Sellis T.: Integrating Keywords and Semantics on Document Annotation and Search, 9th intl. conf. on ontologies, databases, & applications of semantics (ODBASE '10)

Giannopoulos G., Bikakis N., Dalamagas T., Sellis T.: GoNTogle: A Tool for Semantic Annotation and Search, 7th extended semantic web conference (ESWC '10)

Bikakis N., Gioldasis N., Tsinaraki C., Christodoulakis S.: Querying XML Data with SPARQL, 20th intl. conf. on database & expert systems applications (DEXA '09)

Bikakis N., Gioldasis N., Tsinaraki C., Christodoulakis S.: Semantic Based Access over XML Data, 2nd intl. summit on knowledge society (WSKS '09)

Makris K., Bikakis N., Gioldasis N., Tsinaraki C., Christodoulakis S.: Towards a Mediator based on OWL and SPARQL, 2nd intl. summit on the knowledge society (WSKS '09)

Multimodal Foundation Models for the Maritime Domain [2025]

VisualFacts :: Democratizing Visual Analytics    [Research Project for the support of Post-doctoral Researchers]   

RawVis :: Progressive & Adaptive Processing for In-situ Visualization & Analytics over Big Raw Data    [Nat/Eu Young Researchers Research Grant]

Social Event Organization :: Successful Social Events Planning

graphVizdb :: A Platform for Interactive Big Graph Data Visualization  |: >_  try

synopsViz :: A Hierarchical Aggregation Framework for Progressive Multi-level Visualization & Analytics over Big Data

RDivF :: Keyword Search Diversification over RDF Data

SPARQL2XQuery :: Bridging the gap between the XML & the Semantic Web

SPARQL-RW :: Querying the Web of Data through Ontology Mapping & SPARQL Query Rewriting [Online Demo]

miRNA LOD :: Publishing & Exploring Evolving Biological Linked Data

GoNTogle :: Semantic-based Retrieval & Annotation