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Zifei Shan

10 accepted papers

2026

ChartE$^{3}$: A Comprehensive Benchmark for End-to-End Chart Editing

ICML 2026poster

Charts are a fundamental visualization format for structured data analysis. Enabling end-to-end chart editing according to user intent is of great practical value, yet remains challenging due to the need for both fine-grained control and global structural consistency. Most existing approaches adopt …

Cited by 0SourceScholar
2026

KaLM-Embedding-V2: Superior Training Techniques and Data Inspire A Versatile Embedding Model

ICLR 2026poster

Recent advancements in Large Language Models (LLMs)-based text embedding models primarily focus on data scaling or synthesis, yet limited exploration of training techniques and data quality, thereby constraining performance. In this work, we propose KaLM-Embedding-V2, a series of versatile and compa…

Cited by 0SourcecodeScholar
2026

MASPO: Joint Prompt Optimization for LLM-based Multi-Agent Systems

ICML 2026poster

Large language model (LLM)-based Multi-agent systems (MAS) have shown promise in tackling complex collaborative tasks, where agents are typically orchestrated via role-specific prompts. While the quality of these prompts is pivotal, jointly optimizing them across interacting agents remains a non-tri…

Cited by 0SourceScholar
2025

B-STaR: Monitoring and Balancing Exploration and Exploitation in Self-Taught Reasoners

ICLR 2025poster

In the absence of extensive human-annotated data for complex reasoning tasks, self-improvement -- where models are trained on their own outputs -- has emerged as a primary method for enhancing performance. Recently, the approach to self-improvement has shifted toward a more dynamic, online fashion t…

2025

CLEME2.0: Towards Interpretable Evaluation by Disentangling Edits for Grammatical Error Correction

ACL 2025long

The paper focuses on the interpretability of Grammatical Error Correction (GEC) evaluation metrics, which received little attention in previous studies. To bridge the gap, we introduce **CLEME2.0**, a reference-based metric describing four fundamental aspects of GEC systems: hit-correction, wrong-co…

2025

DAST: Context-Aware Compression in LLMs via Dynamic Allocation of Soft Tokens

ACL 2025finding

Large Language Models (LLMs) face computational inefficiencies and redundant processing when handling long context inputs, prompting a focus on compression techniques. While existing semantic vector-based compression methods achieve promising performance, these methods fail to account for the intrin…

Cited by 0SourcePDFScholar
2025

Distill Visual Chart Reasoning Ability from LLMs to MLLMs

EMNLP 2025

Solving complex chart Q&A tasks requires advanced visual reasoning abilities in multimodal large language models (MLLMs), including recognizing key information from visual inputs and conducting reasoning over it. While fine-tuning MLLMs for reasoning is critical, collecting and annotating charts and

2025

Loss-Aware Curriculum Learning for Chinese Grammatical Error Correction

ICASSP 2025accepted

Chinese grammatical error correction (CGEC) aims to detect and correct errors in the input Chinese sentences. Recently, Pre-trained Language Models (PLMS) have been employed to improve the performance. However, current approaches ignore that correction difficulty varies across different instances an…

Cited by 0SourceScholar
2025

On the Perception Bottleneck of VLMs for Chart Understanding

EMNLP 2025

Chart understanding requires models to effectively analyze and reason about numerical data, textual elements, and complex visual components. Our observations reveal that the perception capabilities of existing large vision-language models (LVLMs) constitute a critical bottleneck in this process. In

2024

TruthReader: Towards Trustworthy Document Assistant Chatbot with Reliable Attribution

EMNLP 2024system demonstrations

Document assistant chatbots are empowered with extensive capabilities by Large Language Models (LLMs) and have exhibited significant advancements. However, these systems may suffer from hallucinations that are difficult to verify in the context of given documents.Moreover, despite the emergence of p…