activity
20192026
most citedBayesBeat: Reliable Atrial Fibrillation Detection from Noisy Photoplethysmography Data

13 citations · 40 across the 16 of their papers we have counts for

collaborators

21 papers

cs.LG2026

SEER: Self-Evolving Event Reasoning and Retrieval for Time Series Forecasting

Mingtian Tan, Palash Goyal, Mihir Parmar +6

Real-world time series are frequently driven by exogenous events and structural shifts, rendering conventional forecasting based solely on historical numerical observations insuffi…

cs.AI2026

Nexus : An Agentic Framework for Context-Aware Time Series Forecasting

Sarkar Snigdha Sarathi Das, Palash Goyal, Mihir Parmar +6

Language models have emerged as highly capable reasoners, yet their performance in time series forecasting remains uneven across domains and levels of contextual grounding. This is…

cs.AI2026

Bridging the Know-Act Gap via Task-Level Autoregressive Reasoning

Jihyun Janice Ahn, Ryo Kamoi, Berk Atil +34

LLMs often generate seemingly valid answers to flawed or ill-posed inputs. This is not due to missing knowledge: under discriminative prompting, the same models can mostly identify…

cs.LG2025

Synapse: Adaptive Arbitration of Complementary Expertise in Time Series Foundational Models

Sarkar Snigdha Sarathi Das, Palash Goyal, Mihir Parmar +7

Pre-trained Time Series Foundational Models (TSFMs) represent a significant advance, capable of forecasting diverse time series with complex characteristics, including varied seaso…

cs.CL2025

Efficient PRM Training Data Synthesis via Formal Verification

Ryo Kamoi, Yusen Zhang, Nan Zhang +4

Process Reward Models (PRMs) have emerged as a promising approach for improving LLM reasoning capabilities by providing process supervision over reasoning traces. However, existing…

cs.CL2025

HRScene: How Far Are VLMs from Effective High-Resolution Image Understanding?

Yusen Zhang, Wenliang Zheng, Aashrith Madasu +14

High-resolution image (HRI) understanding aims to process images with a large number of pixels, such as pathological images and agricultural aerial images, both of which can exceed…

cs.LG2025

GREATERPROMPT: A Unified, Customizable, and High-Performing Open-Source Toolkit for Prompt Optimization

Wenliang Zheng, Sarkar Snigdha Sarathi Das, Yusen Zhang +1

LLMs have gained immense popularity among researchers and the general public for its impressive capabilities on a variety of tasks. Notably, the efficacy of LLMs remains significan…

cs.CL2025

Can LLMs Rank the Harmfulness of Smaller LLMs? We are Not There Yet

Berk Atil, Vipul Gupta, Sarkar Snigdha Sarathi Das +1

Large language models (LLMs) have become ubiquitous, thus it is important to understand their risks and limitations. Smaller LLMs can be deployed where compute resources are constr…

cs.CL2024★ 2 cited

Verbosity Veracity: Demystify Verbosity Compensation Behavior of Large Language Models

Yusen Zhang, Sarkar Snigdha Sarathi Das, Rui Zhang

Although Large Language Models (LLMs) have demonstrated their strong capabilities in various tasks, recent work has revealed LLMs also exhibit undesirable behaviors, such as halluc…

cs.CL2024

GReaTer: Gradients over Reasoning Makes Smaller Language Models Strong Prompt Optimizers

Sarkar Snigdha Sarathi Das, Ryo Kamoi, Bo Pang +3

The effectiveness of large language models (LLMs) is closely tied to the design of prompts, making prompt optimization essential for enhancing their performance across a wide range…

cs.CL2024

VisOnlyQA: Large Vision Language Models Still Struggle with Visual Perception of Geometric Information

Ryo Kamoi, Yusen Zhang, Sarkar Snigdha Sarathi Das +2

Large Vision Language Models (LVLMs) have achieved remarkable performance in various vision-language tasks. However, it is still unclear how accurately LVLMs can perceive visual in…

cs.CL2024★ 4 cited

Evaluating LLMs at Detecting Errors in LLM Responses

Ryo Kamoi, Sarkar Snigdha Sarathi Das, Renze Lou +12

With Large Language Models (LLMs) being widely used across various tasks, detecting errors in their responses is increasingly crucial. However, little research has been conducted o…

cs.CL2023★ 3 cited

Unified Low-Resource Sequence Labeling by Sample-Aware Dynamic Sparse Finetuning

Sarkar Snigdha Sarathi Das, Ranran Haoran Zhang, Peng Shi +2

Unified Sequence Labeling that articulates different sequence labeling problems such as Named Entity Recognition, Relation Extraction, Semantic Role Labeling, etc. in a generalized…

cs.CR2023★ 4 cited

Hermes: Unlocking Security Analysis of Cellular Network Protocols by Synthesizing Finite State Machines from Natural Language Specifications

Abdullah Al Ishtiaq, Sarkar Snigdha Sarathi Das, Syed Md Mukit Rashid +8

In this paper, we present Hermes, an end-to-end framework to automatically generate formal representations from natural language cellular specifications. We first develop a neural…

cs.CL2023

S3-DST: Structured Open-Domain Dialogue Segmentation and State Tracking in the Era of LLMs

Sarkar Snigdha Sarathi Das, Chirag Shah, Mengting Wan +5

The traditional Dialogue State Tracking (DST) problem aims to track user preferences and intents in user-agent conversations. While sufficient for task-oriented dialogue systems su…

cs.IR2023★ 11 cited

Using Large Language Models to Generate, Validate, and Apply User Intent Taxonomies

Chirag Shah, Ryen W. White, Reid Andersen +13

Log data can reveal valuable information about how users interact with Web search services, what they want, and how satisfied they are. However, analyzing user intents in log data…

cs.CL2021★ 2 cited

CONTaiNER: Few-Shot Named Entity Recognition via Contrastive Learning

Sarkar Snigdha Sarathi Das, Arzoo Katiyar, Rebecca J. Passonneau +1

Named Entity Recognition (NER) in Few-Shot setting is imperative for entity tagging in low resource domains. Existing approaches only learn class-specific semantic features and int…

cs.IR2020

A Survey on Deep Learning Based Point-Of-Interest (POI) Recommendations

Md. Ashraful Islam, Mir Mahathir Mohammad, Sarkar Snigdha Sarathi Das +1

Location-based Social Networks (LBSNs) enable users to socialize with friends and acquaintances by sharing their check-ins, opinions, photos, and reviews. Huge volume of data gener…

cs.LG2020★ 13 cited

BayesBeat: Reliable Atrial Fibrillation Detection from Noisy Photoplethysmography Data

Sarkar Snigdha Sarathi Das, Subangkar Karmaker Shanto, Masum Rahman +4

Smartwatches or fitness trackers have garnered a lot of popularity as potential health tracking devices due to their affordable and longitudinal monitoring capabilities. To further…

cs.LG2020

Boosting House Price Predictions using Geo-Spatial Network Embedding

Sarkar Snigdha Sarathi Das, Mohammed Eunus Ali, Yuan-Fang Li +2

Real estate contributes significantly to all major economies around the world. In particular, house prices have a direct impact on stakeholders, ranging from house buyers to financ…

cs.CV2019★ 1 cited

CCCNet: An Attention Based Deep Learning Framework for Categorized Crowd Counting

Sarkar Snigdha Sarathi Das, Syed Md. Mukit Rashid, Mohammed Eunus Ali

Crowd counting problem that counts the number of people in an image has been extensively studied in recent years. In this paper, we introduce a new variant of crowd counting proble…