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Giulio Zhou

6 accepted papers

2026

Constitutional Classifiers++: Production-Grade Defenses against Universal Jailbreaks

ICLR 2026poster

We introduce enhanced Constitutional Classifiers that deliver production-grade jailbreak robustness with dramatically reduced computational costs and refusal rates compared to previous-generation defenses. We first identify vulnerabilities in existing systems that evaluate model outputs without rega…

Cited by 0SourceScholar
2024

Semantics and Sentiment: Cross-lingual Variations in Emoji Use

EMNLP 2024main

Over the past decade, the use of emojis in social media has seen a rapid increase. Despite their popularity and image-grounded nature, previous studies have found that people interpret emojis inconsistently when presented in context and in isolation. In this work, we explore whether emoji semantics…

2022

Hierarchical Recurrent Aggregative Generation for Few-Shot NLG

ACL 2022findings

Large pretrained models enable transfer learning to low-resource domains for language generation tasks. However, previous end-to-end approaches do not account for the fact that some generation sub-tasks, specifically aggregation and lexicalisation, can benefit from transfer learning in different ext…

Cited by 0SourcePDFScholar
2021

Generalising Multilingual Concept-to-Text NLG with Language Agnostic Delexicalisation

ACL 2021long

Concept-to-text Natural Language Generation is the task of expressing an input meaning representation in natural language. Previous approaches in this task have been able to generalise to rare or unseen instances by relying on a delexicalisation of the input. However, this often requires that the in…

Cited by 4SourcePDFScholar