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Kian Ahrabian

5 accepted papers

2025

A Practical Analysis of Human Alignment with *PO

NAACL 2025findings

At the forefront of state-of-the-art human alignment methods are preference optimization methods (*PO). Prior research has often concentrated on identifying the best-performing method, typically involving a grid search over hyperparameters, which can be impractical for general practitioners. In this…

Cited by 0SourcePDFScholar
2025

A Systematic Analysis of Base Model Choice for Reward Modeling

EMNLP 2025

Reinforcement learning from human feedback (RLHF) and, at its core, reward modeling have become a crucial part of training powerful large language models (LLMs). One commonly overlooked factor in training high-quality reward models (RMs) is the effect of the base model, which is becoming more challe

Cited by 0SourcePDFScholar
2024

MARVEL: Multidimensional Abstraction and Reasoning through Visual Evaluation and Learning

NeurIPS 2024poster

While multi-modal large language models (MLLMs) have shown significant progress across popular visual reasoning benchmarks, whether they possess abstract visual reasoning abilities remains an open question. Similar to the Sudoku puzzles, abstract visual reasoning (AVR) problems require finding high-…

2024

On the Adaptation of Unlimiformer for Decoder-Only Transformers

COLING 2024main

One of the prominent issues stifling the current generation of large language models is their limited context length. Recent proprietary models such as GPT-4 and Claude 2 have introduced longer context lengths, 8k/32k and 100k, respectively; however, despite the efforts in the community, most common…

2023

Temporal Knowledge Graph Forecasting Without Knowledge Using In-Context Learning

EMNLP 2023long main

Temporal knowledge graph (TKG) forecasting benchmarks challenge models to predict future facts using knowledge of past facts. In this paper, we develop an approach to use in-context learning (ICL) with large language models (LLMs) for TKG forecasting. Our extensive evaluation compares diverse baseli…

Cited by 0SourcecodeScholar