Danai Koutra

2026

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AgentDR: Dynamic Recommendation with Implicit Item-Item Relations via LLM-based Agents.
Mingdai Yang|Nurendra Choudhary|Jiangshu Du|Edward W. Huang|Philip S. Yu|Karthik Subbian|Danai Koutra
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2025

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LinkGPT: Leveraging Large Language Models for Enhanced Link Prediction in Text-Attributed Graphs.
Zhongmou He|Jing Zhu|Shengyi Qian|Joyce Chai|Danai Koutra
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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GraFS: An Integrated GNN-LLM Approach for Inferring Best Functional Substitute Products.
Favour Nerrise|Edward W. Huang|Xiaonan Ji|Karthik Subbian|Danai Koutra
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Understanding and Scaling Collaborative Filtering Optimization from the Perspective of Matrix Rank.
Donald Loveland|Xinyi Wu|Tong Zhao|Danai Koutra|Neil Shah|Mingxuan Ju
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
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Towards Agentic AI for Science: Hypothesis Generation, Comprehension, Quantification, and Validation.
Lifu Huang|Danai Koutra|Adithya Kulkarni|Temiloluwa Prioleau|Qingyun Wu|Yujun Yan|Yaoqing Yang|James Zou|Dawei Zhou
Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025

2024

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TouchUp-G: Improving Feature Representation through Graph-Centric Finetuning.
Jing Zhu|Xiang Song|Vassilis N. Ioannidis|Danai Koutra|Christos Faloutsos
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
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Pitfalls in Link Prediction with Graph Neural Networks: Understanding the Impact of Target-link Inclusion & Better Practices.
Jing Zhu|Yuhang Zhou|Vassilis N. Ioannidis|Shengyi Qian|Wei Ai|Xiang Song|Danai Koutra
Proceedings of the 17th ACM International Conference on Web Search and Data Mining, WSDM 2024, Merida, Mexico, March 4-8, 2024
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Graph Coarsening via Convolution Matching for Scalable Graph Neural Network Training.
Charles Dickens|Edward W. Huang|Aishwarya Reganti|Jiong Zhu|Karthik Subbian|Danai Koutra
Companion Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, Singapore, May 13-17, 2024

2022

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CAPER: Coarsen, Align, Project, Refine - A General Multilevel Framework for Network Alignment.
Jing Zhu|Danai Koutra|Mark Heimann
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
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Leveraging the Graph Structure of Neural Network Training Dynamics.
Fatemeh Vahedian|Ruiyu Li|Puja Trivedi|Di Jin|Danai Koutra
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
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On Generalizing Static Node Embedding to Dynamic Settings.
Di Jin|Sungchul Kim|Ryan A. Rossi|Danai Koutra
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022
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Augmentations in Graph Contrastive Learning: Current Methodological Flaws & Towards Better Practices.
Puja Trivedi|Ekdeep Singh Lubana|Yujun Yan|Yaoqing Yang|Danai Koutra
WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022
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Accepted Tutorials at The Web Conference 2022.
Riccardo Tommasini|Senjuti Basu Roy|Xuan Wang|Hongwei Wang|Heng Ji|Jiawei Han|Preslav Nakov|Giovanni Da San Martino|Firoj Alam|Markus Schedl|Elisabeth Lex|Akash Bharadwaj|Graham Cormode|Milan Dojchinovski|Jan Forberg|Johannes Frey|Pieter Bonte|Marco Balduini|Matteo Belcao|Emanuele Della Valle|Junliang Yu|Hongzhi Yin|Tong Chen|Haochen Liu|Yiqi Wang|Wenqi Fan|Xiaorui Liu|Jamell Dacon|Lingjuan Lyu|Jiliang Tang|Aristides Gionis|Stefan Neumann|Bruno Ordozgoiti|Simon Razniewski|Hiba Arnaout|Shrestha Ghosh|Fabian M. Suchanek|Lingfei Wu|Yu Chen|Yunyao Li|Bang Liu|Filip Ilievski|Daniel Garijo|Hans Chalupsky|Pedro A. Szekely|Ilias Kanellos|Dimitris Sacharidis|Thanasis Vergoulis|Nurendra Choudhary|Nikhil Rao|Karthik Subbian|Srinivasan H. Sengamedu|Chandan K. Reddy|Friedhelm Victor|Bernhard Haslhofer|George Katsogiannis-Meimarakis|Georgia Koutrika|Shengmin Jin|Danai Koutra|Reza Zafarani|Yulia Tsvetkov|Vidhisha Balachandran|Sachin Kumar|Xiangyu Zhao|Bo Chen|Huifeng Guo|Yejing Wang|Ruiming Tang|Yang Zhang|Wenjie Wang|Peng Wu|Fuli Feng|Xiangnan He
Companion of The Web Conference 2022, Virtual Event / Lyon, France, April 25 - 29, 2022

2020

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CONE-Align: Consistent Network Alignment with Proximity-Preserving Node Embedding.
Xiyuan Chen|Mark Heimann|Fatemeh Vahedian|Danai Koutra
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020
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G-CREWE: Graph CompREssion With Embedding for Network Alignment.
Kyle Kai Qin|Flora D. Salim|Yongli Ren|Wei Shao|Mark Heimann|Danai Koutra
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020
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Toward Activity Discovery in the Personal Web.
Tara Safavi|Adam Fourney|Robert Sim|Marcin Juraszek|Shane Williams|Ned Friend|Danai Koutra|Paul N. Bennett
WSDM '20: The Thirteenth ACM International Conference on Web Search and Data Mining, Houston, TX, USA, February 3-7, 2020
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What is Normal, What is Strange, and What is Missing in a Knowledge Graph: Unified Characterization via Inductive Summarization.
Caleb Belth|Xinyi Zheng|Jilles Vreeken|Danai Koutra
WWW '20: The Web Conference 2020, Taipei, Taiwan, April 20-24, 2020

2018

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REGAL: Representation Learning-based Graph Alignment.
Mark Heimann|Haoming Shen|Tara Safavi|Danai Koutra
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

2015

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Events and Controversies: Influences of a Shocking News Event on Information Seeking.
Danai Koutra|Paul N. Bennett|Eric Horvitz
Proceedings of the 24th International Conference on World Wide Web, WWW 2015, Florence, Italy, May 18-22, 2015

2013

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Fast anomaly detection despite the duplicates.
Jay Yoon Lee|U Kang|Danai Koutra|Christos Faloutsos
22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume