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Zhiheng Lyu

7 accepted papers

2026

VisCoder2: Building Multi-Language Visualization Coding Agents

ICLR 2026poster

Large language models (LLMs) have recently enabled coding agents capable of generating, executing, and revising visualization code. However, existing models often fail in practical workflows due to limited language coverage, unreliable execution, and lack of iterative correction mechanisms. Progress…

Cited by 0SourceScholar
2025

FactTrack: Time-Aware World State Tracking in Story Outlines

NAACL 2025long

While accurately detecting and correcting factual contradictions in language model outputs has become increasingly important as their capabilities improve, doing so is highly challenging. We propose a novel method, FactTrack, for tracking atomic facts and addressing factual contradictions. Crucially…

2024

Can Large Language Models Infer Causation from Correlation?

ICLR 2024poster

Causal inference is one of the hallmarks of human intelligence. While the field of CausalNLP has attracted much interest in the recent years, existing causal inference datasets in NLP primarily rely on discovering causality from empirical knowledge (e.g., commonsense knowledge). In this work, we pro…

2024

Do LLMs Think Fast and Slow? A Causal Study on Sentiment Analysis

EMNLP 2024finding

Sentiment analysis (SA) aims to identify the sentiment expressed in a piece of text, often in the form of a review. Assuming a review and the sentiment associated with it, in this paper we formulate SA as a combination of two tasks: (1) a causal discovery task that distinguishes whether a review “pr…

2024

VideoScore: Building Automatic Metrics to Simulate Fine-grained Human Feedback for Video Generation

EMNLP 2024main

The recent years have witnessed great advances in video generation. However, the development of automatic video metrics is lagging significantly behind. None of the existing metric is able to provide reliable scores over generated videos. The main barrier is the lack of large-scale human-annotated d…

2023

CLadder: Assessing Causal Reasoning in Language Models

NeurIPS 2023poster

The ability to perform causal reasoning is widely considered a core feature of intelligence. In this work, we investigate whether large language models (LLMs) can coherently reason about causality. Much of the existing work in natural language processing (NLP) focuses on evaluating _commonsense_ cau…

2022

Logical Fallacy Detection

EMNLP 2022finding

Reasoning is central to human intelligence. However, fallacious arguments are common, and some exacerbate problems such as spreading misinformation about climate change. In this paper, we propose the task of logical fallacy detection, and provide a new dataset (Logic) of logical fallacies generally…