Athanasios Nikolakopoulos

Researcher, Amazon

Joined

January 2023

Names

Athanasios Nikolakopoulos (Preferred)

Athanasios N. Nikolakopoulos

Emails

****@gmail.com (Confirmed)

Personal Links

Homepage

Google Scholar

DBLP

Career & Education History

Researcher

Amazon (amazon.com)

2021 – Present

Researcher

University of Minnesota - Twin Cities (umn.edu)

2017 – 2021

Advisors, Relations & Conflicts

Postdoc Advisor

George Karypis

2017 – 2021

Expertise

Natural Language Processing

2021 – Present

Recommender Systems

2014 – Present

Graph Learning

2013 – Present

Publications

A Framework for Prompt Optimization and Translation Across Foundation Models
Abhinav Shankaranarayanan Venkataraman, Athanasios Nikolakopoulos, Vishwanath Kumaraswamy, Tao Zhang, Sarath Chander, Rohit Saboo, Suleiman A. Khan
- ICLR 2026 Workshop RSI Poster
- Readers: Everyone
Prompt Engineering at Scale: Provably Effective Multi-Agent Cascades for Attribute Generation in E-Commerce
Peng Gao, Athanasios Nikolakopoulos, Zhu Cheng, Andrea Scarinci, Aziz Umit Batur, Suleiman A. Khan
- Submitted to ICLR 2026
- Readers: Everyone
RecWalk: Nearly Uncoupled Random Walks for Top-N Recommendation
Athanasios Nikolakopoulos, George Karypis
- 29 Jan 2023
- OpenReview Archive Direct Upload
- Readers: Everyone
Trust Your Neighbors: A Comprehensive Survey of Neighborhood-Based Methods for Recommender Systems
Athanasios N. Nikolakopoulos, Xia Ning, Christian Desrosiers, George Karypis
- 2022 (modified: 23 Jan 2023)
- Recommender Systems Handbook 2022
- Readers: Everyone
Projection techniques to update the truncated SVD of evolving matrices with applications
Vasileios Kalantzis, Georgios Kollias, Shashanka Ubaru, Athanasios N. Nikolakopoulos, Lior Horesh, Kenneth L. Clarkson
- 2021 (modified: 11 Mar 2022)
- ICML 2021
- Readers: Everyone
Trust your neighbors: A comprehensive survey of neighborhood-based methods for recommender systems
Athanasios N. Nikolakopoulos, Xia Ning, Christian Desrosiers, George Karypis
- 2021 (modified: 23 Jan 2023)
- CoRR 2021
- Readers: Everyone
Elements and evolutionary determinants of genomic divergence between paired primary and metastatic tumors
Ruping Sun, Athanasios N. Nikolakopoulos
- 2021 (modified: 29 Jan 2023)
- PLoS Comput. Biol. 2021
- Readers: Everyone
Random Surfing Revisited: Generalizing PageRank's Teleportation Model
Athanasios N. Nikolakopoulos
- 2020 (modified: 29 Jan 2023)
- CoRR 2020
- Readers: Everyone
Boosting Item-based Collaborative Filtering via Nearly Uncoupled Random Walks
Athanasios N. Nikolakopoulos, George Karypis
- 2020 (modified: 29 Jan 2023)
- ACM Trans. Knowl. Discov. Data 2020
- Readers: Everyone
Projection techniques to update the truncated SVD of evolving matrices
Vassilis Kalantzis, Georgios Kollias, Shashanka Ubaru, Athanasios N. Nikolakopoulos, Lior Horesh, Kenneth L. Clarkson
- 2020 (modified: 29 Jan 2023)
- CoRR 2020
- Readers: Everyone

View all 37 publications

Co-Authors

View all 30 co-authors