Zifeng Wang

Research Scientist, Google

Joined

July 2019

Names

Zifeng Wang

Emails

****@ece.neu.edu (Confirmed)

****@google.com (Confirmed)

Personal Links

Career & Education History

Research Scientist

Google (google.com)

2023 – Present

PhD student

Northeastern University (northeastern.edu)

2018 – 2023

Undergrad student

Electronic Engineering, Tsinghua University, Tsinghua University (mails.tsinghua.edu.cn)

2014 – 2018

Advisors, Relations & Conflicts

PhD Advisor

Jennifer G. Dy

2018 – 2023

Expertise

Deep Learning

Present

Continual Learning

Present

Lifelong Learning

Present

Large Language Models

Present

Publications

Cost-effective Agent Test-time Scaling via Budget-Aware Thinking
Tengxiao Liu, Zifeng Wang, Jin Miao, I-Hung Hsu, Jun Yan, Jiefeng Chen, Rujun Han, Fangyuan Xu, Yanfei Chen, Ke Jiang, Samira Daruki, Yi Liang, William Yang Wang, Tomas Pfister, Chen-Yu Lee
- Submitted to ICLR 2026
- Readers: Everyone
Supervised Reinforcement Learning: From Expert Trajectories to Step-wise Reasoning
Yihe Deng, I-Hung Hsu, Jun Yan, Zifeng Wang, Rujun Han, Gufeng Zhang, Yanfei Chen, Wei Wang, Tomas Pfister, Chen-Yu Lee
- ICLR 2026 Poster
- Readers: Everyone
ReasoningBank: Scaling Agent Self-Evolving with Reasoning Memory
Siru Ouyang, Jun Yan, I-Hung Hsu, Yanfei Chen, Ke Jiang, Zifeng Wang, Rujun Han, Long Le, Samira Daruki, Xiangru Tang, Vishy Tirumalashetty, George Lee, Mahsan Rofouei, Hangfei Lin, Jiawei Han, Chen-Yu Lee, Tomas Pfister
- ICLR 2026 Poster
- Readers: Everyone
Universal Model Routing for Efficient LLM Inference
Wittawat Jitkrittum, Harikrishna Narasimhan, Ankit Singh Rawat, Jeevesh Juneja, Congchao Wang, Zifeng Wang, Alec Go, Chen-Yu Lee, Pradeep Shenoy, Rina Panigrahy, Aditya Krishna Menon, Sanjiv Kumar
- ICLR 2026 Poster
- Readers: Everyone
Heterogeneous Swarms: Jointly Optimizing Model Roles and Weights for Multi-LLM Systems
Shangbin Feng, Zifeng Wang, Palash Goyal, Yike Wang, Weijia Shi, Huang Xia, Hamid Palangi, Luke Zettlemoyer, Yulia Tsvetkov, Chen-Yu Lee, Tomas Pfister
- NeurIPS 2025 poster
- Readers: Everyone
SAIF: Sparse Adversarial and Imperceptible Attack Framework
Tooba Imtiaz, Morgan R Kohler, Jared F Miller, Zifeng Wang, Masih Eskandar, Mario Sznaier, Octavia Camps, Jennifer Dy
- Accepted by TMLR
- Readers: Everyone
Universal LLM Routing with Correctness-Based Representation
Wittawat Jitkrittum, Harikrishna Narasimhan, Ankit Singh Rawat, Jeevesh Juneja, Zifeng Wang, Chen-Yu Lee, Pradeep Shenoy, Rina Panigrahy, Aditya Krishna Menon, Sanjiv Kumar
- SCOPE - ICLR 2025 Poster
- Readers: Everyone
Model Swarms: Collaborative Search to Adapt LLM Experts via Swarm Intelligence
Shangbin Feng, Zifeng Wang, Yike Wang, Sayna Ebrahimi, Hamid Palangi, Lesly Miculicich, Achin Kulshrestha, Nathalie Rauschmayr, Yejin Choi, Yulia Tsvetkov, Chen-Yu Lee, Tomas Pfister
- ICML 2025 poster
- Readers: Everyone
ADAPT to Robustify Prompt Tuning Vision Transformers
Masih Eskandar, Tooba Imtiaz, Zifeng Wang, Jennifer Dy
- Accepted by TMLR
- Readers: Everyone
OmnixR: Evaluating Omni-modality Language Models on Reasoning across Modalities
Lichang Chen, Hexiang Hu, Mingda Zhang, Yiwen Chen, Zifeng Wang, YANDONG LI, Pranav Shyam, Tianyi Zhou, Heng Huang, Ming-Hsuan Yang, Boqing Gong
- ICLR 2025 Poster
- Readers: Everyone

View all 58 publications

Co-Authors

View all 151 co-authors