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Nikhita Vedula

9 accepted papers

2025

Quantile Regression with Large Language Models for Price Prediction

ACL 2025finding

Large Language Models (LLMs) have shown promise in structured prediction tasks, including regression, but existing approaches primarily focus on point estimates and lack systematic comparison across different methods.We investigate probabilistic regression using LLMs for unstructured inputs, address…

2025

Wizard of Shopping: Target-Oriented E-commerce Dialogue Generation with Decision Tree Branching

ACL 2025long

The goal of conversational product search (CPS) is to develop an intelligent, chat-based shopping assistant that can directly interact with customers to understand shopping intents, ask clarification questions, and find relevant products. However, training such assistants is hindered mainly due to t…

Cited by 0SourcePDFScholar
2024

Generative Explore-Exploit: Training-free Optimization of Generative Recommender Systems using LLM Optimizers

ACL 2024long

Recommender systems are widely used to suggest engaging content, and Large Language Models (LLMs) have given rise to generative recommenders. Such systems can directly generate items, including for open-set tasks like question suggestion. While the world knowledge of LLMs enables good recommendation…

Cited by 4SourcePDFScholar
2024

Leveraging Interesting Facts to Enhance User Engagement with Conversational Interfaces

NAACL 2024industry

Conversational Task Assistants (CTAs) guide users in performing a multitude of activities, such as making recipes. However, ensuring that interactions remain engaging, interesting, and enjoyable for CTA users is not trivial, especially for time-consuming or challenging tasks. Grounded in psychologic…

2023

Faithful Low-Resource Data-to-Text Generation through Cycle Training

ACL 2023long

Methods to generate text from structured data have advanced significantly in recent years, primarily due to fine-tuning of pre-trained language models on large datasets. However, such models can fail to produce output faithful to the input data, particularly on out-of-domain data. Sufficient annotat…

2022

Advin: Automatically Discovering Novel Domains and Intents from User Text Utterances

ICASSP 2022accepted

Recognizing the intents and domains of users’ spoken and written language is a key component of Natural Language Understanding (NLU) systems. Real applications however encounter dynamic, rapidly evolving environments with newly emerging intents and domains, for which no labeled data or prior informa…

Cited by 0SourceScholar
2022

Fact Checking Machine Generated Text with Dependency Trees

EMNLP 2022industry

Factual and logical errors made by Natural Language Generation (NLG) systems limit their applicability in many settings. We study this problem in a conversational search and recommendation setting, and observe that we can often make two simplifying assumptions in this domain: (i) there exists a body…

2022

Wizard of Tasks: A Novel Conversational Dataset for Solving Real-World Tasks in Conversational Settings

COLING 2022main

Conversational Task Assistants (CTAs) are conversational agents whose goal is to help humans perform real-world tasks. CTAs can help in exploring available tasks, answering task-specific questions and guiding users through step-by-step instructions. In this work, we present Wizard of Tasks, the firs…

Cited by 24SourcePDFScholar
2021

Open Intent Extraction from Natural Language Interactions (Extended Abstract)

IJCAI 2021poster

Accurately discovering user intents from their written or spoken language plays a critical role in natural language understanding and automated dialog response. Most existing research models this as a classification task with a single intent label per utterance. Going beyond this formulation, we def…

Cited by 0SourcePDFScholar