← Search

Chulaka Gunasekara

11 accepted papers

2025

Activated LoRA: Fine-tuned LLMs for Intrinsics

NeurIPS 2025poster

Low-Rank Adaptation (LoRA) has emerged as a highly efficient framework for finetuning the weights of large foundation models, and has become the go-to method for data-driven customization of LLMs. Despite the promise of highly customized behaviors and capabilities, switching between relevant LoRAs i…

Cited by 0SourcecodeScholar
2024

Granite-Function Calling Model: Introducing Function Calling Abilities via Multi-task Learning of Granular Tasks

EMNLP 2024industry

An emergent research trend explores the use of Large Language Models (LLMs) as the backbone of agentic systems (e.g., SWE-Bench, Agent-Bench). To fulfill LLMs’ potential as autonomous agents, they must be able to identify, call, and interact with a variety of external tools and application program i…

2023

MISMATCH: Fine-grained Evaluation of Machine-generated Text with Mismatch Error Types

ACL 2023findings

With the growing interest in large language models, the need for evaluating the quality of machine text compared to reference (typically human-generated) text has become focal attention. Most recent works focus either on task-specific evaluation metrics or study the properties of machine-generated t…

2023

Semi-Structured Object Sequence Encoders

EMNLP 2023long findings

In this paper we explore the task of modeling semi-structured object sequences; in particular, we focus our attention on the problem of developing a structure-aware input representation for such sequences. Examples of such data include user activity on websites, machine logs, and many others. This t…

Cited by 0SourceScholar
2023

The Benefits of Bad Advice: Autocontrastive Decoding across Model Layers

ACL 2023long

Applying language models to natural language processing tasks typically relies on the representations in the final model layer, as intermediate hidden layer representations are presumed to be less informative. In this work, we argue that due to the gradual improvement across model layers, additional…

2022

X-FACTOR: A Cross-metric Evaluation of Factual Correctness in Abstractive Summarization

EMNLP 2022main

Abstractive summarization models often produce factually inconsistent summaries that are not supported by the original article. Recently, a number of fact-consistent evaluation techniques have been proposed to address this issue; however, a detailed analysis of how these metrics agree with one anoth…

Cited by 12SourcePDFScholar
2021

Does Structure Matter? Encoding Documents for Machine Reading Comprehension

NAACL 2021long

Machine reading comprehension is a challenging task especially for querying documents with deep and interconnected contexts. Transformer-based methods have shown advanced performances on this task; however, most of them still treat documents as a flat sequence of tokens. This work proposes a new Tra…

Cited by 8SourcePDFScholar
2021

Explaining Neural Network Predictions on Sentence Pairs via Learning Word-Group Masks

NAACL 2021long

Explaining neural network models is important for increasing their trustworthiness in real-world applications. Most existing methods generate post-hoc explanations for neural network models by identifying individual feature attributions or detecting interactions between adjacent features. However, f…

2021

TWEETSUMM - A Dialog Summarization Dataset for Customer Service

EMNLP 2021finding

In a typical customer service chat scenario, customers contact a support center to ask for help or raise complaints, and human agents try to solve the issues. In most cases, at the end of the conversation, agents are asked to write a short summary emphasizing the problem and the proposed solution, u…

2021

Using Question Answering Rewards to Improve Abstractive Summarization

EMNLP 2021finding

Neural abstractive summarization models have drastically improved in the recent years. However, the summaries generated by these models generally suffer from issues such as: not capturing the critical facts in source documents, and containing facts that are inconsistent with the source documents. In…