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Sailik Sengupta

6 accepted papers

2025

DeAL: Decoding-time Alignment for Large Language Models

ACL 2025long

Large Language Models (LLMs) are nowadays expected to generate content aligned with human preferences. Current work focuses on alignment at model training time, through techniques such as Reinforcement Learning with Human Feedback (RLHF). However, it is unclear if such methods are an effective choic…

Cited by 0SourcePDFScholar
2025

SeRA: Self-Reviewing and Alignment of LLMs using Implicit Reward Margins

ICLR 2025poster

Direct alignment algorithms (DAAs), such as direct preference optimization (DPO), have become popular alternatives to Reinforcement Learning from Human Feedback (RLHF) due to their simplicity, efficiency, and stability. However, the preferences used by DAAs are usually collected before alignment tra…

Cited by 0SourcePDFScholar
2024

Can Your Model Tell a Negation from an Implicature? Unravelling Challenges With Intent Encoders

ACL 2024long

Conversational systems often rely on embedding models for intent classification and intent clustering tasks. The advent of Large Language Models (LLMs), which enable instructional embeddings allowing one to adjust semantics over the embedding space using prompts, are being viewed as a panacea for th…

Cited by 2SourcePDFScholar
2024

FLAP: Flow-Adhering Planning with Constrained Decoding in LLMs

NAACL 2024long

Planning is a crucial task for agents in task oriented dialogs (TODs). Human agents typically resolve user issues by following predefined workflows, decomposing workflow steps into actionable items, and performing actions by executing APIs in order; all of which require reasoning and planning. With…

Cited by 5SourcePDFScholar
2024

‘Why Didn’t You Allocate This Task to Them?’ Negotiation-Aware Task Allocation and Contrastive Explanation Generation

AAAI 2024technical

In this work, we design an Artificially Intelligent Task Allocator (AITA) that proposes a task allocation for a team of humans. A key property of this allocation is that when an agent with imperfect knowledge (about their teammate's costs and/or the team's performance metric) contests the allocation…

Cited by 12SourcePDFScholar
2023

Measuring and Mitigating Constraint Violations of In-Context Learning for Utterance-to-API Semantic Parsing

EMNLP 2023long findings

In executable task-oriented semantic parsing, the system aims to translate users' utterances in natural language to machine-interpretable programs (API calls) that can be executed according to pre-defined API specifications. With the popularity of Large Language Models (LLMs), in-context learning of…

Cited by 0SourceScholar