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Fahim Dalvi

15 accepted papers

2025

AraDiCE: Benchmarks for Dialectal and Cultural Capabilities in LLMs

COLING 2025main

Arabic, with its rich diversity of dialects, remains significantly underrepresented in Large Language Models, particularly in dialectal variations. We address this gap by introducing seven synthetic datasets in dialects alongside Modern Standard Arabic (MSA), created using Machine Translation (MT) c…

Cited by 7SourcePDFScholar
2025

Beyond the Leaderboard: Understanding Performance Disparities in Large Language Models via Model Diffing

EMNLP 2025

As fine-tuning becomes the dominant paradigm for improving large language models (LLMs), understanding what changes during this process is increasingly important. Traditional benchmarking often fails to explain _why_ one model outperforms another. In this work, we use model diffing, a mechanistic in

2024

Exploring Alignment in Shared Cross-lingual Spaces

ACL 2024long

Despite their remarkable ability to capture linguistic nuances across diverse languages, questions persist regarding the degree of alignment between languages in multilingual embeddings. Drawing inspiration from research on high-dimensional representations in neural language models, we employ cluste…

2024

Latent Concept-based Explanation of NLP Models

EMNLP 2024main

Interpreting and understanding the predictions made by deep learning models poses a formidable challenge due to their inherently opaque nature. Many previous efforts aimed at explaining these predictions rely on input features, specifically, the words within NLP models. However, such explanations ar…

2023

ConceptX: A Framework for Latent Concept Analysis

AAAI 2023technical

The opacity of deep neural networks remains a challenge in deploying solutions where explanation is as important as precision. We present ConceptX, a human-in-the-loop framework for interpreting and annotating latent representational space in pre-trained Language Models (pLMs). We use an unsupervise…

2022

Analyzing Encoded Concepts in Transformer Language Models

NAACL 2022long

We propose a novel framework ConceptX, to analyze how latent concepts are encoded in representations learned within pre-trained lan-guage models. It uses clustering to discover the encoded concepts and explains them by aligning with a large set of human-defined concepts. Our analysis on seven transf…

2022

Discovering Latent Concepts Learned in BERT

ICLR 2022poster

A large number of studies that analyze deep neural network models and their ability to encode various linguistic and non-linguistic concepts provide an interpretation of the inner mechanics of these models. The scope of the analyses is limited to pre-defined concepts that reinforce the traditional l…

Cited by 77SourcePDFScholar
2022

Effect of Post-processing on Contextualized Word Representations

COLING 2022main

Post-processing of static embedding has been shown to improve their performance on both lexical and sequence-level tasks. However, post-processing for contextualized embeddings is an under-studied problem. In this work, we question the usefulness of post-processing for contextualized embeddings obta…

Cited by 17SourcePDFScholar
2022

On the Transformation of Latent Space in Fine-Tuned NLP Models

EMNLP 2022main

We study the evolution of latent space in fine-tuned NLP models. Different from the commonly used probing-framework, we opt for an unsupervised method to analyze representations. More specifically, we discover latent concepts in the representational space using hierarchical clustering. We then use a…

Cited by 23SourcePDFScholar
2021

Fighting the COVID-19 Infodemic: Modeling the Perspective of Journalists, Fact-Checkers, Social Media Platforms, Policy Makers, and the Society

EMNLP 2021finding

With the emergence of the COVID-19 pandemic, the political and the medical aspects of disinformation merged as the problem got elevated to a whole new level to become the first global infodemic. Fighting this infodemic has been declared one of the most important focus areas of the World Health Organ…

2020

AraBench: Benchmarking Dialectal Arabic-English Machine Translation

COLING 2020main

Low-resource machine translation suffers from the scarcity of training data and the unavailability of standard evaluation sets. While a number of research efforts target the former, the unavailability of evaluation benchmarks remain a major hindrance in tracking the progress in low-resource machine…

Cited by 39SourcePDFScholar
2019

Identifying and Controlling Important Neurons in Neural Machine Translation

ICLR 2019poster

Neural machine translation (NMT) models learn representations containing substantial linguistic information. However, it is not clear if such information is fully distributed or if some of it can be attributed to individual neurons. We develop unsupervised methods for discovering important neurons i…

Cited by 218SourcePDFScholar