Changkyu Choi

Associate professor, Department for Informatics, University of Oslo

MishMash role: Member

Multimodality Computer Vision Artificial intelligence Class imbalance problem for Machine Learning Unsupervised Machine Learning algorithms

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Other projects

• AURoRA: South-Korea and Norway collaboration on Advancing Universal Resource-Scarce Large Vision-Language Models Towards Robust and Reliable AI
• Integreat - Norsk senter for kunnskapsdrevet maskinlæring
• Maskinlæring i den Virkelige Verden (MLReal)
• Visual Intelligence
• Visuell Intelligens

Latest results

Type

Journal article

1. Journal article, 2026

   PubTables-QA: A Benchmark Toward Cross-Page Table Reasoning in Table Visual Question Answering

   Jiin Han ; Suyoung Bae ; Yerim Choi ; Sangyun Lee ; Kyutae Kim ; Ryunho Kim ; Jee-Hyong Lee ; Changkyu Choi ; Yunseok Choi

2. Journal article, 2026

   Selective Disclosure: Controlling Information Leakage in DocVQA Explanations

   Kangsoo Jung ; Mohamed Ali Souibgui ; Changkyu Choi ; Catuscia Palamidessi

3. Journal article, 2026

   Mitigating Embedding Leakage via Latent Disruption with Controlled Reconstruction

   Zhiyuan Wu ; Changkyu Choi ; Shujian Yu ; Robert Jenssen ; Ali Ramezani-Kebrya

4. Journal article, 2025

   Differentiable Hierarchical Visual Tokenization

   Marius Aasan ; Martine Hjelkrem Tan ; Nico Catalano ; Changkyu Choi ; Adín Ramírez Rivera

5. Journal article, 2025

   Leveraging Foundation Model Adapters to Enable Robust and Semantic Underwater Exploration

   Changkyu Choi ; Arangan Subramaniam ; Nils Olav Handegard ; Ali Ramezani-Kebrya ; Robert Jenssen

6. Journal article, 2025

   DocVXQA: Context-Aware Visual Explanations for Document Question Answering

   Mohamed Ali Souibgui ; Changkyu Choi ; Andrey Barsky ; Kangsoo Jung ; Ernest Valveny ; Dimosthenis Karatzas

7. Journal article, 2025

   ProxyDR: Deep Hyperspherical Metric Learning with Distance Ratio-Based Formulation

   Hyeongji Kim ; Changkyu Choi ; Michael Christian Kampffmeyer ; Terje Berge ; Pekka Parviainen ; Ketil Malde

Conference

1. Conference abstract, 2025

   Proceedings of NORA’s annual conference 2025

   Geir Halnes ; Anam Javaid ; Michael Solvang ; Stefano Nichele ; Michael Riegler ; Bjørn-Jostein Singstad ; Baltasar Beferull-Lozano ; Emilio Ruiz Moreno ; Luis M. Lopez-Ramos ; Mehrzad Abdi Khalife ; Ola Huse Ramstad ; Hamze Issa ; Arina Surko ; Axel Sandvig ; Hasan Ogul ; Daniele Fantin ; Ioanna Sandvig ; Christopher Vibe ; Kushtrim Visoka ; Mehdi HoushmandSarkhoosh ; Aaron de Leyos ; Sinan Ugur Umu ; Klaus Johannsen ; Kjetil Indrehus ; Malcom McMillan ; Julia Kropiunig ; Ryan Anthony Marinelli ; Fadi Al Machot ; Xue-Cheng Tai ; Andrea Alessandro Gasparini ; David Parkes ; Semra Oztemel Sari ; Gro Fonnes ; Cise Midoglu ; Anton Tkachenko ; Maria Bashir ; Kari-Anne Kallerud Lyng ; Florenc Demrozi ; Kate Briggs ; Junyong You ; Signe Riemer-Sørensen ; Benjamin Daniel Adolphi ; Martin Thomas Horsch ; Arangan Subramaniam ; Ibrahim Riza Hallac ; Lina Plataniti ; Hao Liu ; Mikkel Elle Lepperød ; Changkyu Choi ; Preben Castberg ; Abdelaziz Qassi ; Raymond H. Chan ; Anja Stein ; Heinz Adolf Preisig ; Alexander Johannes Stasik ; Saeed Shafiee Sabet ; Nils Olav Handegard ; Robert Jenssen ; Solve Sæbø ; Synnøve Rubach ; Waldir Leoncio Netto ; Pankaj Pandey ; Jan Wuite ; Arezo Shakeri ; Shailendra Singh ; Ali Ramezani-Kebrya ; Pål Halvorsen ; David S. Leslie ; Matteo Iervasi ; Mathis Korseberg Stokke ; Tomas Kupka ; Lingfeng Li ; Helge Fredriksen ; Shakiba Sadat Mirbagheri ; Ali Ramezanikebrya ; Jacob Alexander Hay ; Aslak Djupskås ; Mina FNorwayarmanbar ; Claudio Sartori ; Felix Simon Reimers ; Thomas Nagler ; Amber Leeson

2. Conference poster, 2025

   Information-Theoretic Approach to Learn Causal Relationship Between Question and Answering in DocVQA

   Kjetil Indrehus ; Changkyu Choi ; Ali Ramezani-Kebrya

3. Conference poster, 2025

   Marine Intelligence: Innovations to Enhance Underwater Exploration

   Arangan Subramaniam ; Changkyu Choi ; Nils Olav Handegard ; Robert Jenssen ; Ali Ramezani-Kebrya

More results in NVA…