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Varun Kumar

15 accepted papers

2026

Cyber-Zero: Training Cybersecurity Agents without Runtime

ICLR 2026poster

Large Language Models (LLMs) have achieved remarkable success in software engineering tasks when trained with executable runtime environments, particularly in resolving GitHub issues. However, such runtime environments are often unavailable in other domains, especially cybersecurity, where challenge…

Cited by 0SourcecodeScholar
2026

Training Language Model Agents to Find Vulnerabilities with CTF-Dojo

ICML 2026poster

Large language models (LLMs) have demonstrated exceptional capabilities when trained within executable runtime environments, notably excelling at software engineering tasks through verified feedback loops. Yet, scalable and generalizable execution-grounded environments remain scarce, limiting progre…

Cited by 0SourceScholar
2025

CodeAssistBench (CAB): Dataset & Benchmarking for Multi-turn Chat-Based Code Assistance

NeurIPS 2025poster

Programming assistants powered by large language models have transformed software development, yet most benchmarks focus narrowly on code generation tasks. Recent efforts like InfiBench and StackEval attempt to address this gap using Stack Overflow data but remain limited to single-turn interactions…

Cited by 0SourcecodeScholar
2025

Planning-Aware Code Infilling via Horizon-Length Prediction

EMNLP 2025

Fill-in-the-Middle (FIM), or infilling, has become integral to code language models, enabling generation of missing code given both left and right contexts. However, the current FIM training paradigm which performs next-token prediction (NTP) over reordered sequence often leads to models struggling

Cited by 0SourcePDFScholar
2024

Fewer Truncations Improve Language Modeling

ICML 2024poster

In large language model training, input documents are typically concatenated together and then split into sequences of equal length to avoid padding tokens. Despite its efficiency, the concatenation approach compromises data integrity—it inevitably breaks many documents into incomplete pieces, leadi…

Cited by 20SourcePDFScholar
2024

LeDex: Training LLMs to Better Self-Debug and Explain Code

NeurIPS 2024poster

In the domain of code generation, self-debugging is crucial. It allows LLMs to refine their generated code based on execution feedback. This is particularly important because generating correct solutions in one attempt proves challenging for complex tasks. Prior works on self-debugging mostly focus…

Cited by 4SourcePDFScholar
2024

Reasoning in Token Economies: Budget-Aware Evaluation of LLM Reasoning Strategies

EMNLP 2024main

A diverse array of reasoning strategies has been proposed to elicit the capabilities of large language models. However, in this paper, we point out that traditional evaluations which focus solely on performance metrics miss a key factor: the increased effectiveness due to additional compute. By over…

2023

A Static Evaluation of Code Completion by Large Language Models

ACL 2023industry

Large language models trained on code have shown great potential to increase productivity of software developers. Several execution-based benchmarks have been proposed to evaluate functional correctness of model-generated code on simple programming problems. Nevertheless, it is expensive to perform…

2023

Multi-lingual Evaluation of Code Generation Models

ICLR 2023top-25%

We present two new benchmarks, MBXP and Multilingual HumanEval, designed to evaluate code completion models in over 10 programming languages. These datasets are generated using a conversion framework that transpiles prompts and test cases from the original MBPP and HumanEval datasets into the corres…

2023

ReCode: Robustness Evaluation of Code Generation Models

ACL 2023long

Code generation models have achieved impressive performance. However, they tend to be brittle as slight edits to a prompt could lead to very different generations; these robustness properties, critical for user experience when deployed in real-life applications, are not well understood. Most existin…

2023

Resolving Ambiguities in Text-to-Image Generative Models

ACL 2023long

Natural language often contains ambiguities that can lead to misinterpretation and miscommunication. While humans can handle ambiguities effectively by asking clarifying questions and/or relying on contextual cues and common-sense knowledge, resolving ambiguities can be notoriously hard for machines…

2022

Mitigating Gender Bias in Distilled Language Models via Counterfactual Role Reversal

ACL 2022findings

Language models excel at generating coherent text, and model compression techniques such as knowledge distillation have enabled their use in resource-constrained settings. However, these models can be biased in multiple ways, including the unfounded association of male and female genders with gender…

2022

On the Intrinsic and Extrinsic Fairness Evaluation Metrics for Contextualized Language Representations

ACL 2022short

Multiple metrics have been introduced to measure fairness in various natural language processing tasks. These metrics can be roughly categorized into two categories: 1) extrinsic metrics for evaluating fairness in downstream applications and 2) intrinsic metrics for estimating fairness in upstream c…

Cited by 99SourcePDFScholar
2021

Industry Scale Semi-Supervised Learning for Natural Language Understanding

NAACL 2021industry

This paper presents a production Semi-Supervised Learning (SSL) pipeline based on the student-teacher framework, which leverages millions of unlabeled examples to improve Natural Language Understanding (NLU) tasks. We investigate two questions related to the use of unlabeled data in production SSL c…

Cited by 65SourcePDFScholar
2019

SpaceNet MVOI: A Multi-View Overhead Imagery Dataset

ICCV 2019poster

Detection and segmentation of objects in overheard imagery is a challenging task. The variable density, random orientation, small size, and instance-to-instance heterogeneity of objects in overhead imagery calls for approaches distinct from existing models designed for natural scene datasets. Though…

Cited by 94PDFScholar