Selected Publications (updated September 2023)

2023

Omar Shahbaz Khan, Martin Aumüller, Björn Þór Jónsson.
Suitability of Nearest Neighbour Indexes for Multimedia Relevance Feedback.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
A Coruña, Spain, October 2023.

Gylfi Þór Guðmundsson, Björn Þór Jónsson.
Is Quantized ANN Search Cursed? Case Study of Quantifying Search and Index Quality.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
A Coruña, Spain, October 2023.

Omar Shahbaz Khan, Björn Þór Jónsson.
User Relevance Feedback and Novices: Anecdotes from Exquisitor‘s Participation in Interactive Retrieval Competitions.
Proceedings of the International Conference on Content-Based Multimedia Indexing (CBMI).
Orléans, France, September 2023.

Aaron Duane, Björn Þór Jónsson, Hyowon Lee, Cathal Gurrin.
LAD: An Application Design Model to Support the Analysis of Large-Scale Personal Data Collections Generated by Lifelogging.
Personal and Ubiquitous Computing, July 2023.

Invited Paper
Ilham A.Qasse, Shailesh Mishra, Björn Þór Jónsson, Foutse Khomh, Mohammad Hamdaqa.
Chat2Code: A Chatbot for Model Specification and Code Generation, The Case of Smart Contracts.
Proceedings of the IEEE International Conference on Software Services Engineering (SSE).
Chicago, IL, USA, July 2023.

Maria Pegia, Björn Þór Jónsson, Anastasia Moumtzidou, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris.
MuseHash: Supervised Bayesian Hashing for Multimodal Image Representation.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
Thessaloniki, Greece, June 2023.

Werner Bailer, Rahel Arnold, Vera Benz, Davide Coccomini, Silvan Heller, Anastasios Gkagkas, Gylfi Þór Guðmundsson, Björn Þór Jónsson, Jakub Lokoč, Nicola Messina, Nick Pantelidis, Jiaxin Wu.
Improving Query and Assessment Quality in Text-Based Interactive Video Retrieval Evaluation.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
Thessaloniki, Greece, June 2023.

Ilham A.Qasse, Mohammad Hamdaqa, Björn Þór Jónsson.
Smart Contract Upgradeability on the Ethereum Blockchain Platform: An Exploratory Study.
Proceedings of the 20th International Conference on Mining Software Repositories (MSR Registered Reports).
Melbourne, Australia, May 2023.

Ly-Duyen Tran, Manh-Duy Nguyen, Duc-Tien Dang-Nguyen, Silvan Heller, Florian Spiess, Jakub Lokoč, Ladislav Peška, Thao-Nhu Nguyen , Omar Shahbaz Khan, Aaron Duane, Björn Þór Jónsson, Luca Rossetto, An-Zi Yen, Ahmed Alateeq, Naushad Alam, Minh-Triet Tran, Graham Healy, Klaus Schoeffmann, Cathal Gurrin.
Comparing Interactive Retrieval Approaches at the Lifelog Search Challenge 2021.
IEEE Access, 11, February 2023.

2022

Omar Shahbaz Khan, Jan Zahálka, Björn Þór Jónsson.
Influence of Late Fusion of High-Level Features on User Relevance Feedback for Videos.
Proceedings of the International Workshop on Interactive Multimedia Retrieval (ImuR).
Lisboa, Portugal, October 2022.

Nikolaj Mertz, Björn Þór Jónsson, Aaron Duane.
NeoCube: Graph-Based Implementation of the M³ Data Model.
Proceedings of the International Workshop on Interactive Multimedia Retrieval (ImuR).
Lisboa, Portugal, October 2022.

Björn Þór Jónsson, Magda Pischetola, Nanna Inie, Mats Daniels, Claus Brabrand.
Student Perspectives on On-site versus Online Teaching throughout the Covid-19 Pandemic.
Proceedings of the Annual IEEE Frontiers in Education Conference (FIE).
Uppsala, Sweden, October 2022.

Best Paper Award
Maria Eirini Pegia, Anastasia Moumtzidou, Ilias Gialampoukidis, Björn Þór Jónsson, Stefanos Vrochidis, Ioannis Kompatsiaris.
BiasUNet: Learning Change Detection over Sentinel-2 Image Pairs.
Proceedings of the International Conference on Content-Based Multimedia Indexing (CBMI).
Graz, Austria, September 2022.

Mathias Glistrup, Stevan Rudinac, Björn Þór Jónsson.
Urban Image Geo-Localization Using Open Data on Public Spaces.
Proceedings of the International Conference on Content-Based Multimedia Indexing (CBMI).
Graz, Austria, September 2022.

Björn Þór Jónsson, Aaron Duane, Nikolaj Mertz.
Relational Database Performance for Multimedia: A Case Study.
Proceedings of the International Conference on Content-Based Multimedia Indexing (CBMI).
Graz, Austria, September 2022.

Maria Eirini Pegia, Anastasia Moumtzidou, Ilias Gialampoukidis, Björn Þór Jónsson, Stefanos Vrochidis, Ioannis Kompatsiaris.
BiasHash: A Bayesian Hashing Framework for Image Retrieval.
Proceedings of the IEEE Workship on Image, Video, and Multidimensional Signal Processing (IVMSP).
Nafplio, Greece, June 2022.

Silvan Heller, Viktor Gsteiger, Werner Bailer, Cathal Gurrin, Björn Þór Jónsson, Jakub Lokoč, Andreas Leibetseder, František Mejzlík, Ladislav Peška, Luca Rossetto, Konstantin Schall, Klaus Schoeffmann, Heiko Schuldt, Florian Spiess, Ly-Duyen Tran, Lucia Vadicamo, Patrik Veselý, Stefanos Vrochidis, Jiaxin Wu.
Interactive Video Retrieval Evaluation at a Distance: Comparing Sixteen Interactive Video Search Systems in a Remote Setting at the 10th Video Browser Showdown.
International Journal of Multimedia Information Retrieval (IJMIR), 11(1), March 2022.

Jakub Lokoč, Werner Bailer, Kai Uwe Barthel, Cathal Gurrin, Silvan Heller, Björn Þór Jónsson, Ladislav Peška, Luca Rossetto, Klaus Schoeffmann, Lucia Vadicamo, Stefanos Vrochidis, Jiaxin Wu.
A task category space for user-centric comparative multimedia search evaluations.
Proceedings of the International Conference on MultiMedia Modeling (MMM).
Phu Quoc, Vietnam, June 2022.

2021

Jakub Lokoč, Patrik Veselý, František Mejzlík, Gregor Kovalčík, Tomáš Souček, Luca Rossetto, Klaus Schoeffmann, Werner Bailer, Cathal Gurrin, Loris Sauter, Jaeyub Song, Stefanos Vrochidis, Jiaxin Wu, Björn Þór Jónsson.
Is the Reign of Interactive Search Eternal? Findings from the Video Browser Showdown 2020.
ACM Transactions on Multimedia Computing Communications and Applications (TOMM), 17(3), August 2021.

Omar Shahbaz Khan, Björn Þór Jónsson, Jan Zahálka, Stevan Rudinac, Marcel Worring.
Impact of Interaction Strategies on User Relevance Feedback.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
Taipei, Taiwan, November 2021.

Kim Ida Schild, Alexandra Mercédesz Bagi, Omar Shahbaz Khan, Jan Zahálka, Björn Þór Jónsson.
XQM: Interactive Learning on Mobile Phones.
Proceedings of the International Conference on MultiMedia Modeling (MMM).
Prague, Czech Republic, June 2021.

2020

Sabina Hult, Line Bay Kreiberg, Sami Sebastian Brandt, Björn Þór Jónsson.
Analysis of the Effect of Dataset Construction Methodology on Transferability of Music Emotion Recognition Models.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
Dublin, Ireland, October 2020.

Omar Shahbaz Khan, Björn Þór Jónsson, Stevan Rudinac, Jan Zahálka, Hanna Ragnarsdóttir, Þórhildur Þorleiksdóttir, Gylfi Þór Guðmundsson, Laurent Amsaleg, Marcel Worring.
Interactive Learning for Multimedia at Large.
Proceedings of the European Conference on Information Retrieval (ECIR).
Lisbon, Portugal, April 2020.

2019

Björn Þór Jónsson, Gylfi Þór Guðmundsson, Philippe Bonnet, Laurent Amsaleg.
Data Storage and Management for Big Multimedia.
In Big Data Analytics for Large-Scale Multimedia Search, Stefanos Vrochidis, Benoit Huet, Edward Y. Chang, Ioannis Kompatsiaris (editors).
Wiley, 2019.

Hanna Ragnarsdóttir, Þórhildur Þorleiksdóttir, Omar Shahbaz Khan, Björn Þór Jónsson, Gylfi Þór Guðmundsson, Jan Zahálka, Stevan Rudinac, Laurent Amsaleg, Marcel Worring.
Exquisitor: Breaking the Interaction Barrier for Exploration of 100 Million Images (demo).
Proceedings of the ACM Multimedia Conference,
Nice, France, October 2019.

Anders Munck Højsgaard, Björn Þór Jónsson, Philippe Bonnet.
Index Maintenance Strategy and Cost Model for Extended Cluster Pruning.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
Newark, NJ, USA, October 2019.

Snorri Gíslason, Björn Þór Jónsson, Laurent Amsaleg.
Integration of Exploration and Search: A Case Study of the M³ Model.
Proceedings of the International Conference on MultiMedia Modeling (MMM).
Special Session on Multimedia Analytics: Perspectives, Techniques and Applications (MAPTA).
Thessaloniki, Greece, January 2019.

2018

Laurent Amsaleg, Björn Þór Jónsson, Herwig Lejsek.
Scalability of the NV-tree: Three Experiments.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
Lima, Peru, October 2018.

Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
Transactional Support for Visual Instance Search.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
Lima, Peru, October 2018.

Daníel Brandur Sigurgeirsson, Marta Kristín Lárusdóttir, Mohammad Hamdaqa, Mats Daniels, Björn Þór Jónsson.
Learning Outcome Outcomes: An Evaluation of Quality.
Proceedings of the 48th Annual Frontiers in Education Conference (FiE).
San Jose, CA, USA, October 2018.

Gylfi Þór Guðmundsson, Christian Andreas Jacobsen, Hilmar Tryggvason, Björn Þór Jónsson.
DeCP-Live: A Web-Interface for DeCP, a Distributed High-Throughput CBIR System.
Proceedings of the International Conference on Content-Based Multimedia Indexing (CBMI).
La Rochelle, France, September 2018.

Gylfi Þór Guðmundsson, Björn Þór Jónsson, Laurent Amsaleg, Michael J. Franklin.
Prototyping a Web-Scale Multimedia Retrieval Service Using Spark.
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), 14(3s), June 2018.

Jan Zahálka, Stevan Rudinac, Björn Þór Jónsson, Dennis C. Koelma, Marcel Worring.
Blackthorn: Large-Scale Interactive Multimodal Learning.
IEEE Transactions on Multimedia (TMM), 20(3), March 2018.

2017

Haukur Pálmason, Björn Þór Jónsson, Laurent Amsaleg, Markus Schedl, Peter Knees.
On Competitiveness of Nearest-Neighbor-Based Music Classification: A Methodological Critique.
Proceedings of the International Conference on Similarity Search and Applications (SISAP).
Munich, Germany, October, 2017.

Ivan Luiz Picoli, Carla Villegas, Björn Þór Jónsson, Luc Bouganim, Philippe Bonnet.
uFLIP-OC: Understanding Flash I/O Patterns on Open-Channel Solid State Drives.
Proceedings of the ACM SIGOPS Asia-Pacific Workshop on Systems (APSys).
Mumbai, India, September, 2017.

Haukur Pálmason, Björn Þór Jónsson, Markus Schedl, Peter Knees.
Genre Classification Revisited: An In-Depth Examination Guided by Music Experts.
Proceedings of the International Symposium on Computer Music Multidisciplinary Research (CMMR).
Porto, Portugal, September, 2017.

Best Paper Nominee
Gylfi Þór Guðmundsson, Laurent Amsaleg, Björn Þór Jónsson, Michael J. Franklin.
Towards Engineering a Web-Scale Multimedia Service: A Case Study Using Spark.
Proceedings of the ACM Multimedia Systems Conference (MMSys).
Taipei, Taiwan, June, 2017.

Selected Older Publications

Jan Zahálka, Stevan Rudinac, Björn Þór Jónsson, Dennis C. Koelma, Marcel Worring.
Interactive Multimodal Learning on 100 Million Images.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
New York, NY, USA, June, 2016.

Björn Þór Jónsson, Laurent Amsaleg, Herwig Lejsek.
SSD Technology Enables Dynamic Maintenance of Persistent High-Dimensional Indexes.
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR).
New York, NY, USA, June, 2016.

Björn Þór Jónsson, Marcel Worring, Jan Zahálka, Stevan Rudinac, Laurent Amsaleg.
Ten Research Questions for Scalable Multimedia Analytics.
Proceedings of the International Conference on MultiMedia Modeling (MMM).
Special Session on Perspectives on Multimedia Analytics.
Miami, FL, USA, January, 2016.

Björn Þór Jónsson, Grímur Tómasson, Hlynur Sigurþórsson, Áslaug Eiríksdóttir, Laurent Amsaleg, Marta Kristín Lárusdóttir.
A Multi-Dimensional Data Model for Personal Photo Browsing.
International Conference on MultiMedia Modeling (MMM).
Sydney, Australia, January, 2015.

Herwig Lejsek, Björn Þór Jónsson, Laurent Amsaleg.
NV-Tree: Nearest Neighbours at the Billion Scale.
ACM International Conference on Multimedia Retrieval (ICMR).
Trento, Italy, April, 2011.

Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
NV-tree: An Efficient Disk-Based Index for Approximate Search in Very Large High-Dimensional Collections.
IEEE Transactions on Pattern Analysis and Machine Intelligence, 31(5), May 2009.

Best Paper Award
Luc Bouganim, Björn Þór Jónsson, Philippe Bonnet.
uFLIP: Understanding Flash IO Patterns.
Proceedings of the Fourth Biennial Conference on Innovative Data Systems (CIDR).
Asilomar, CA, USA, January, 2009.

Björn Þór Jónsson, María Arinbjarnar, Bjarnsteinn Þórsson, Michael J. Franklin, Divesh Srivastava.
Performance and Overhead of Semantic Cache Management.
ACM Transactions on Internet Technology, 6(3), August, 2006.

Herwig Lejsek, Friðrik Heidar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
Scalability of Local Image Descriptors: A Comparative Study.
Proceedinga of the ACM International Conference on Multimedia (ACM MM).
Santa Barbara, California, USA, October 2006.

Björn Þór Jónsson, Michael J. Franklin, Divesh Srivastava.
Interaction of Query Evaluation and Buffer Management for Information Retrieval.
Proceedings of the ACM SIGMOD International Conference on Management of Data.
Seattle, WA, USA, June 1998.

Shaul Dar, Michael J. Franklin, Björn Þór Jónsson, Divesh Srivastava, Michael Tan.
Semantic Data Caching and Replacement.
Proceedings of 22nd International Conference on Very Large Data Bases (VLDB).
Bombay, India, September 1996.

Michael J. Franklin, Björn Þór Jónsson, Donald Kossmann.
Performance Tradeoffs for Client-Server Query Processing.
Proceedings of the ACM SIGMOD International Conference on Management of Data.
Montreal, Canada, June 1996.