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NIloy Ganguly

36 accepted papers

2026

Latent Diffusion Pretraining for Crystal Property Prediction

ICML 2026poster

Fast and accurate prediction of crystal properties is a central challenge in new materials design. Graph Neural Networks and transformer-based models have emerged as powerful tools for this task due to their ability to encode the local structural environment of atoms within a crystal. However, these…

Cited by 0SourceScholar
2025

Brevity is the soul of sustainability: Characterizing LLM response lengths

ACL 2025finding

A significant portion of the energy consumed by Large Language Models (LLMs) arises from their inference processes; hence developing energy-efficient methods for inference is crucial. While several techniques exist for inference optimization, output compression remains relatively unexplored, with on…

2025

Efficient Continual Pre-training of LLMs for Low-resource Languages

NAACL 2025industry

Open-source large language models (Os-LLMs) propel the democratization of natural language research by giving the flexibility to augment or update model parameters for performance improvement. Nevertheless, like proprietary LLMs, Os-LLMs offer poorer performance on low-resource languages (LRLs) than…

Cited by 2SourcePDFScholar
2025

Evaluation of LLMs in Medical Text Summarization: The Role of Vocabulary Adaptation in High OOV Settings

ACL 2025finding

Large Language Models (LLMs) recently achieved great success in medical text summarization by simply using in-context learning. However, these recent efforts do not perform fine-grained evaluations under difficult settings where LLMs might fail. They typically report performance scores over the enti…

2025

ExPERT: Modeling Human Behavior Under External Stimuli Aware Personalized MTPP

AAAI 2025technical

Marked Temporal Point Process (MTPP) -- the de-facto sequence model for continuous-time event sequences -- historically employed for modeling human-generated action sequences, lack awareness of external stimuli. In this study, we propose a novel framework developed over Transformer Hawkes Process (T…

Cited by 0SourcePDFScholar
2025

Introducing Spotlight: A Novel Approach for Generating Captivating Key Information from Documents

EMNLP 2025

Analyzing and processing vast amounts of textual data presents significant challenges in efficiently extracting key information.In this paper, we introduce '***Spotlight***’, a novel paradigm for information extraction that produces concise, engaging narratives by highlighting the most compelling as

2025

LLM Meets Diffusion: A Hybrid Framework for Crystal Material Generation

NeurIPS 2025poster

Recent advances in generative modeling have shown significant promise in designing novel periodic crystal structures. Existing approaches typically rely on either large language models (LLMs) or equivariant denoising models, each with complementary strengths: LLMs excel at handling discrete atomic t…

Cited by 0SourcecodeScholar
2025

Label-semantics Aware Generative Approach for Domain-Agnostic Multilabel Classification

ACL 2025finding

The explosion of textual data has made manual document classification increasingly challenging. To address this, we introduce a robust, efficient domain-agnostic generative model framework for multi-label text classification. Instead of treating labels as mere atomic symbols, our approach utilizes p…

Cited by 0SourcePDFScholar
2025

MutantPrompt: Prompt Optimization via Mutation Under a Budget on Modest-sized LMs

ACL 2025finding

Prompts serve as a critical instruction interface to unlock the diverse capabilities of Large Language Models (LLMs), thus directly influencing the quality of their outputs. While prompt engineering has shown great promise, identifying optimal prompts remains a significant challenge, particularly fo…

Cited by 0SourcePDFScholar
2025

Periodic Materials Generation using Text-Guided Joint Diffusion Model

ICLR 2025poster

Equivariant diffusion models have emerged as the prevailing approach for generat- ing novel crystal materials due to their ability to leverage the physical symmetries of periodic material structures. However, current models do not effectively learn the joint distribution of atom types, fractional co…

2025

Program of Thoughts for Financial Reasoning: Leveraging Dynamic In-Context Examples and Generative Retrieval

EMNLP 2025

Despite continuous advancements in the capabilities of large language models (LLMs), numerical reasoning remains a challenging area. Techniques like chain-of-thought prompting, tree-of-thought prompting, and program-of-thought prompting guide LLMs through intermediate reasoning steps. Although in-co

Cited by 0SourcePDFScholar
2025

Towards Sustainable NLP: Insights from Benchmarking Inference Energy in Large Language Models

NAACL 2025long

Large language models (LLMs) are increasingly recognized for their exceptional generative capabilities and versatility across various tasks. However, the high inference costs associated with these models have not received adequate attention, particularly when compared to the focus on training costs…

Cited by 0SourcePDFScholar
2024

***YesBut***: A High-Quality Annotated Multimodal Dataset for evaluating Satire Comprehension capability of Vision-Language Models

EMNLP 2024main

Understanding satire and humor is a challenging task for even current Vision-Language models. In this paper, we propose the challenging tasks of Satirical Image Detection (detecting whether an image is satirical), Understanding (generating the reason behind the image being satirical), and Completion…

2024

Cost-Performance Optimization for Processing Low-Resource Language Tasks Using Commercial LLMs

EMNLP 2024finding

Large Language Models (LLMs) exhibit impressive zero/few-shot inference and generation quality for high-resource languages (HRLs). A few of them have been trained on low-resource languages (LRLs) and give decent performance. Owing to the prohibitive costs of training LLMs, they are usually used as a…

2024

How Robust Are the QA Models for Hybrid Scientific Tabular Data? A Study Using Customized Dataset

COLING 2024main

Question-answering (QA) on hybrid scientific tabular and textual data deals with scientific information, and relies on complex numerical reasoning. In recent years, while tabular QA has seen rapid progress, understanding their robustness on scientific information is lacking due to absence of any ben…

Cited by 2SourcePDFScholar
2024

IVP-VAE: Modeling EHR Time Series with Initial Value Problem Solvers

AAAI 2024technical

Continuous-time models such as Neural ODEs and Neural Flows have shown promising results in analyzing irregularly sampled time series frequently encountered in electronic health records. Based on these models, time series are typically processed with a hybrid of an initial value problem (IVP) solver…

2024

MEDVOC: Vocabulary Adaptation for Fine-tuning Pre-trained Language Models on Medical Text Summarization

IJCAI 2024poster

This work presents a dynamic vocabulary adaptation strategy, MEDVOC, for fine-tuning pre-trained language models (PLMs) like BertSumAbs, BART, and PEGASUS for improved medical text summarization. In contrast to existing domain adaptation approaches in summarization, MEDVOC treats vocabulary as an op…

2024

On The Persona-based Summarization of Domain-Specific Documents

ACL 2024findings

In an ever-expanding world of domain-specific knowledge, the increasing complexity of consuming, and storing information necessitates the generation of summaries from large information repositories. However, every persona of a domain has different requirements of information and hence their summariz…

2024

Order-Based Pre-training Strategies for Procedural Text Understanding

NAACL 2024short

In this paper, we propose sequence-based pre-training methods to enhance procedural understanding in natural language processing. Procedural text, containing sequential instructions to accomplish a task, is difficult to understand due to the changing attributes of entities in the context. We focus o…

2024

Parameter-Efficient Instruction Tuning of Large Language Models For Extreme Financial Numeral Labelling

NAACL 2024long

We study the problem of automatically annotating relevant numerals (GAAP metrics) occurring in the financial documents with their corresponding XBRL tags. Different from prior works, we investigate the feasibility of solving this extreme classification problem using a generative paradigm through ins…

2024

TIGQA: An Expert-Annotated Question-Answering Dataset in Tigrinya

COLING 2024main

The absence of explicitly tailored, accessible annotated datasets for educational purposes presents a notable obstacle for NLP tasks in languages with limited resources. This study initially explores the feasibility of using machine translation (MT) to convert an existing dataset into a Tigrinya dat…

2023

$\textbf{\emph{CLMSM}}$: A Multi-Task Learning Framework for Pre-training on Procedural Text

EMNLP 2023long findings

In this paper, we propose ***CLMSM***, a domain-specific, continual pre-training framework, that learns from a large set of procedural recipes. ***CLMSM*** uses a Multi-Task Learning Framework to optimize two objectives - a) Contrastive Learning using hard triplets to learn fine-grained differences…

Cited by 0SourceScholar
2023

CrysGNN: Distilling Pre-trained Knowledge to Enhance Property Prediction for Crystalline Materials

AAAI 2023technical

In recent years, graph neural network (GNN) based approaches have emerged as a powerful technique to encode complex topological structure of crystal materials in an enriched repre- sentation space. These models are often supervised in nature and using the property-specific training data, learn relat…

2023

CrysMMNet: Multimodal Representation for Crystal Property Prediction

UAI 2023poster

Machine Learning models have emerged as a powerful tool for fast and accurate prediction of different crystalline properties. Exiting state-of-the-art models rely on a single modality of crystal data i.e crystal graph structure, where they construct multi-graph by establishing edges between nearby a…

2023

Differentiable Change-point Detection With Temporal Point Processes

AISTATS 2023poster

In this paper, we consider the problem of global change-point detection in event sequence data, where both the event distributions and change-points are assumed to be unknown. For this problem, we propose a Log-likelihood Ratio based Global Change-point Detector, which observes the entire sequence a…

2023

Entropy-guided Vocabulary Augmentation of Multilingual Language Models for Low-resource Tasks

ACL 2023findings

Multilingual language models (MLLMs) like mBERTpromise to extend the benefits of NLP research to low-resource languages (LRLs). However, LRL words are under-represented in the wordpiece/subword vocabularies of MLLMs. This leads to many LRL words getting replaced by UNK, or concatenated from morpholo…

2023

Financial Numeric Extreme Labelling: A dataset and benchmarking

ACL 2023findings

The U.S. Securities and Exchange Commission (SEC) mandates all public companies to file periodic financial statements that should contain numerals annotated with a particular label from a taxonomy. In this paper, we formulate the task of automating the assignment of a label to a particular numeral s…

Cited by 7SourcePDFScholar
2022

A Framework to Generate High-Quality Datapoints for Multiple Novel Intent Detection

NAACL 2022findings

Systems like Voice-command based conversational agents are characterized by a pre-defined set of skills or intents to perform user specified tasks. In the course of time, newer intents may emerge requiring retraining. However, the newer intents may not be explicitly announced and need to be inferred…

2022

ECTSum: A New Benchmark Dataset For Bullet Point Summarization of Long Earnings Call Transcripts

EMNLP 2022main

Despite tremendous progress in automatic summarization, state-of-the-art methods are predominantly trained to excel in summarizing short newswire articles, or documents with strong layout biases such as scientific articles or government reports. Efficient techniques to summarize financial documents,…

2021

A Hierarchical VAE for Calibrating Attributes while Generating Text using Normalizing Flow

ACL 2021long

In this digital age, online users expect personalized content. To cater to diverse group of audiences across online platforms it is necessary to generate multiple variants of same content with differing degree of characteristics (sentiment, style, formality, etc.). Though text-style transfer is a we…

Cited by 7SourcePDFScholar
2021

Graph-based semi-supervised learning through the lens of safety

UAI 2021poster

Graph-based semi-supervised learning (G-SSL) algorithms have witnessed rapid development and widespread usage across a variety of applications in recent years. However, the theoretical characterisation of the efficacy of such algorithms has remained an under-explored area. We introduce a novel algor…

Cited by 0SourcePDFScholar
2021

Question Answering over Electronic Devices: A New Benchmark Dataset and a Multi-Task Learning based QA Framework

EMNLP 2021finding

Answering questions asked from instructional corpora such as E-manuals, recipe books, etc., has been far less studied than open-domain factoid context-based question answering. This can be primarily attributed to the absence of standard benchmark datasets. In this paper, we meticulously create a lar…

2021

TMCOSS: Thresholded Multi-Criteria Online Subset Selection for Data-Efficient Autonomous Driving

ICCV 2021poster

Training vision-based Autonomous driving models is a challenging problem with enormous practical implications. One of the main challenges is the requirement of storage and processing of vast volumes of (possibly redundant) driving video data. In this paper, we study the problem of data-efficient tra…

Cited by 6PDFScholar
2021

tWT–WT: A Dataset to Assert the Role of Target Entities for Detecting Stance of Tweets

NAACL 2021long

The stance detection task aims at detecting the stance of a tweet or a text for a target. These targets can be named entities or free-form sentences (claims). Though the task involves reasoning of the tweet with respect to a target, we find that it is possible to achieve high accuracy on several pub…

2020

Understanding the Success of Graph-based Semi-Supervised Learning using Partially Labelled Stochastic Block Model

IJCAI 2020poster

With the proliferation of learning scenarios with an abundance of instances, but limited amount of high-quality labels, semi-supervised learning algorithms came to prominence. Graph-based semi-supervised learning (G-SSL) algorithms, of which Label Propagation (LP) is a prominent example, are particu…

Cited by 0SourcePDFScholar
2016

Learning and Forecasting Opinion Dynamics in Social Networks

NeurIPS 2016poster

Social media and social networking sites have become a global pinboard for exposition and discussion of news, topics, and ideas, where social media users often update their opinions about a particular topic by learning from the opinions shared by their friends. In this context, can we learn a data-d…

Cited by 137SourcePDFScholar