← Search

Ziang Xiao

10 accepted papers

2026

PICACO: Pluralistic In-Context Value Alignment via Total Correlation Optimization

ICML 2026poster

In-Context Learning has shown great potential for aligning Large Language Models (LLMs) with human values, helping reduce harmful outputs and accommodate diverse preferences without costly post-training, known as *In-Context Alignment* (ICA). However, LLMs' comprehension of input prompts remains agn…

Cited by 0SourceScholar
2025

Faux Polyglot: A Study on Information Disparity in Multilingual Large Language Models

NAACL 2025long

Although the multilingual capability of LLMs offers new opportunities to overcome the language barrier, do these capabilities translate into real-life scenarios where linguistic divide and knowledge conflicts between multilingual sources are known occurrences? In this paper, we studied LLM’s linguis…

Cited by 3SourcePDFScholar
2025

Interruption Handling for Conversational Robots

RSS 2025poster

Interruptions, a fundamental component of human communication, can enhance the dynamics and effectiveness of conversations, but only when effectively managed by all parties involved. Despite advancements in robotic systems, state-of-the-art systems still have limited capabilities in handling user-in…

Cited by 1PDFcodeScholar
2025

Raising the Bar: Investigating the Values of Large Language Models via Generative Evolving Testing

ICML 2025poster

*Warning: Contains harmful model outputs.* Despite significant advancements, the propensity of Large Language Models (LLMs) to generate harmful and unethical content poses critical challenges. Measuring value alignment of LLMs becomes crucial for their regulation and responsible deployment. Althoug…

Cited by 5SourcePDFScholar
2024

Can Language Models Serve as Text-Based World Simulators?

ACL 2024short

Virtual environments play a key role in benchmarking advances in complex planning and decision-making tasks but are expensive and complicated to build by hand. Can current language models themselves serve as world simulators, correctly predicting how actions change different world states, thus bypas…

Cited by 17SourcePDFScholar
2024

ECBD: Evidence-Centered Benchmark Design for NLP

ACL 2024long

Benchmarking is seen as critical to assessing progress in NLP. However, creating a benchmark involves many design decisions (e.g., which datasets to include, which metrics to use) that often rely on tacit, untested assumptions about what the benchmark is intended to measure or is actually measuring.…

2024

Improving Context-Aware Preference Modeling for Language Models

NeurIPS 2024poster

While finetuning language models from pairwise preferences has proven remarkably effective, the underspecified nature of natural language presents critical challenges. Direct preference feedback is uninterpretable, difficult to provide where multidimensional criteria may apply, and often inconsisten…

Cited by 6SourcePDFScholar
2023

ByteSized32: A Corpus and Challenge Task for Generating Task-Specific World Models Expressed as Text Games

EMNLP 2023long main

In this work we investigate the capacity of language models to generate explicit, interpretable, and interactive world models of scientific and common-sense reasoning tasks. We operationalize this as a task of generating text games, expressed as hundreds of lines of Python code. To facilitate this…

Cited by 0SourcecodeScholar
2023

Evaluating Evaluation Metrics: A Framework for Analyzing NLG Evaluation Metrics using Measurement Theory

EMNLP 2023long main

We address a fundamental challenge in Natural Language Generation (NLG) model evaluation---the design and evaluation of evaluation metrics. Recognizing the limitations of existing automatic metrics and noises from how current human evaluation was conducted, we propose MetricEval, a framework informe…

Cited by 0SourcecodeScholar
2023

Joint Prompt Optimization of Stacked LLMs using Variational Inference

NeurIPS 2023poster

Large language models (LLMs) can be seen as atomic units of computation mapping sequences to a distribution over sequences. Thus, they can be seen as stochastic language layers in a language network, where the learnable parameters are the natural language prompts at each layer. By stacking two such…