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Seungwook Han

6 accepted papers

2025

Emergence and Effectiveness of Task Vectors in In-Context Learning: An Encoder Decoder Perspective

ICML 2025spotlight

Autoregressive transformers exhibit adaptive learning through in-context learning (ICL), which begs the question of how. Prior works have shown that transformers represent the ICL tasks as vectors in their representations. In this paper, we leverage the encoding-decoding framework to study how trans…

Cited by 0SourcePDFScholar
2025

Position: General Intelligence Requires Reward-based Pretraining

ICML 2025spotlight

Large Language Models (LLMs) have demonstrated impressive real-world utility, exemplifying artificial useful intelligence (AUI). However, their ability to reason adaptively and robustly -- the hallmarks of artificial general intelligence (AGI) -- remains fragile. While LLMs seemingly succeed in comm…

Cited by 0SourcePDFScholar
2025

Unveiling the Secret Recipe: A Guide For Supervised Fine-Tuning Small LLMs

ICLR 2025poster

The rise of large language models (LLMs) has created a significant disparity: industrial research labs with their computational resources, expert teams, and advanced infrastructures, can effectively fine-tune LLMs, while individual developers and small organizations face barriers due to limited reso…

2023

Compositional Foundation Models for Hierarchical Planning

NeurIPS 2023poster

To make effective decisions in novel environments with long-horizon goals, it is crucial to engage in hierarchical reasoning across spatial and temporal scales. This entails planning abstract subgoal sequences, visually reasoning about the underlying plans, and executing actions in accordance with t…

Cited by 45SourcePDFScholar
2023

Multi-Symmetry Ensembles: Improving Diversity and Generalization via Opposing Symmetries

ICML 2023poster

Deep ensembles (DE) have been successful in improving model performance by learning diverse members via the stochasticity of random initialization. While recent works have attempted to promote further diversity in DE via hyperparameters or regularizing loss functions, these methods primarily still r…

2022

Equivariant Self-Supervised Learning: Encouraging Equivariance in Representations

ICLR 2022poster

In state-of-the-art self-supervised learning (SSL) pre-training produces semantically good representations by encouraging them to be invariant under meaningful transformations prescribed from human knowledge. In fact, the property of invariance is a trivial instance of a broader class called equivar…