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Barun Patra

14 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

EfficientXLang: Towards Improving Token Efficiency Through Cross-Lingual Reasoning

EMNLP 2025

Despite recent advances in Reasoning Language Models (RLMs), most research focuses solely on English, even though many models are pretrained on multilingual data. In this work, we investigate: Is English the most token-efficient language for reasoning? We evaluate three open-source RLMs: DeepSeek R1

2025

Hummingbird: High Fidelity Image Generation via Multimodal Context Alignment

ICLR 2025poster

While diffusion models are powerful in generating high-quality, diverse synthetic data for object-centric tasks, existing methods struggle with scene-aware tasks such as Visual Question Answering (VQA) and Human-Object Interaction (HOI) Reasoning, where it is critical to preserve scene attributes in…

2025

Scaling Laws for Multilingual Language Models

ACL 2025finding

We propose a novel scaling law for general-purpose decoder-only language models (LMs) trained on multilingual data, tackling the problem of balancing languages during multilingual pretraining. A primary challenge in studying multilingual scaling is the difficulty of analyzing individual language per…

2024

A Glitch in the Matrix? Locating and Detecting Language Model Grounding with Fakepedia

ACL 2024long

Large language models (LLMs) have an impressive ability to draw on novel information supplied in their context. Yet the mechanisms underlying this contextual grounding remain unknown, especially in situations where contextual information contradicts factual knowledge stored in the parameters, which…

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

A Length-Extrapolatable Transformer

ACL 2023long

Position modeling plays a critical role in Transformers. In this paper, we focus on length extrapolation, i.e., training on short texts while evaluating longer sequences. We define attention resolution as an indicator of extrapolation. Then we propose two designs to improve the above metric of Trans…

2023

Beyond English-Centric Bitexts for Better Multilingual Language Representation Learning

ACL 2023long

In this paper, we elaborate upon recipes for building multilingual representation models that are not only competitive with existing state-of-the-art models but are also more parameter efficient, thereby promoting better adoption in resource-constrained scenarios and practical applications. We show…

Cited by 19SourcePDFScholar
2023

Language Is Not All You Need: Aligning Perception with Language Models

NeurIPS 2023poster

A big convergence of language, multimodal perception, action, and world modeling is a key step toward artificial general intelligence. In this work, we introduce KOSMOS-1, a Multimodal Large Language Model (MLLM) that can perceive general modalities, learn in context (i.e., few-shot), and follow ins…

2023

Magneto: A Foundation Transformer

ICML 2023poster

A big convergence of model architectures across language, vision, speech, and multimodal is emerging. However, under the same name ''Transformers'', the above areas use different implementations for better performance, e.g., Post-LayerNorm for BERT, and Pre-LayerNorm for GPT and vision Transformers.…

Cited by 12SourcePDFScholar
2022

Invariant Language Modeling

EMNLP 2022main

Modern pretrained language models are critical components of NLP pipelines. Yet, they suffer from spurious correlations, poor out-of-domain generalization, and biases.Inspired by recent progress in causal machine learning, in particular the invariant risk minimization (IRM) paradigm, we propose inva…

2022

On Efficiently Acquiring Annotations for Multilingual Models

ACL 2022short

When tasked with supporting multiple languages for a given problem, two approaches have arisen: training a model for each language with the annotation budget divided equally among them, and training on a high-resource language followed by zero-shot transfer to the remaining languages. In this work,…

2022

On the Representation Collapse of Sparse Mixture of Experts

NeurIPS 2022accept

Sparse mixture of experts provides larger model capacity while requiring a constant computational overhead. It employs the routing mechanism to distribute input tokens to the best-matched experts according to their hidden representations. However, learning such a routing mechanism encourages token c…

2020

ScopeIt: Scoping Task Relevant Sentences in Documents

COLING 2020industry

A prominent problem faced by conversational agents working with large documents (Eg: email-based assistants) is the frequent presence of information in the document that is irrelevant to the assistant. This in turn makes it harder for the agent to accurately detect intents, extract entities relevant…