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Siheng Li

13 accepted papers

2025

ChartMimic: Evaluating LMM's Cross-Modal Reasoning Capability via Chart-to-Code Generation

ICLR 2025poster

We introduce a new benchmark, ChartMimic, aimed at assessing the visually-grounded code generation capabilities of large multimodal models (LMMs). ChartMimic utilizes information-intensive visual charts and textual instructions as inputs, requiring LMMs to generate the corresponding code for chart r…

2025

Critical Tokens Matter: Token-Level Contrastive Estimation Enhances LLM’s Reasoning Capability

ICML 2025poster

Mathematical reasoning tasks pose significant challenges for large language models (LLMs) because they require precise logical deduction and sequence analysis. In this work, we introduce the concept of critical tokens -- elements within reasoning trajectories that significantly influence incorrect o…

2025

LLM2: Let Large Language Models Harness System 2 Reasoning

NAACL 2025short

Large language models (LLMs) have exhibited impressive capabilities across a myriad of tasks, yet they occasionally yield undesirable outputs. We posit that these limitations are rooted in the foundational autoregressive architecture of LLMs, which inherently lacks mechanisms for differentiating bet…

2024

Parallel Vertex Diffusion for Unified Visual Grounding

AAAI 2024technical

Unified visual grounding (UVG) capitalizes on a wealth of task-related knowledge across various grounding tasks via one-shot training, which curtails retraining costs and task-specific architecture design efforts. Vertex generation-based UVG methods achieve this versatility by unified modeling objec…

Cited by 27SourcePDFScholar
2024

TextBind: Multi-turn Interleaved Multimodal Instruction-following in the Wild

ACL 2024findings

Large language models with instruction-following abilities have revolutionized the field of artificial intelligence. These models show exceptional generalizability to tackle various real-world tasks through their natural language interfaces. However, their performance heavily relies on high-quality…

Cited by 17SourcePDFScholar
2024

Unchosen Experts Can Contribute Too: Unleashing MoE Models’ Power by Self-Contrast

NeurIPS 2024poster

Mixture-of-Experts (MoE) has emerged as a prominent architecture for scaling model size while maintaining computational efficiency. In MoE, each token in the input sequence activates a different subset of experts determined by a routing mechanism. However, the unchosen experts in MoE models do not c…

2023

AutoConv: Automatically Generating Information-seeking Conversations with Large Language Models

ACL 2023short

Information-seeking conversation, which aims to help users gather information through conversation, has achieved great progress in recent years. However, the research is still stymied by the scarcity of training data. To alleviate this problem, we propose AutoConv for synthetic conversation generati…

2023

NewsDialogues: Towards Proactive News Grounded Conversation

ACL 2023findings

Hot news is one of the most popular topics in daily conversations. However, news grounded conversation has long been stymied by the lack of well-designed task definition and scarce data. In this paper, we propose a novel task, Proactive News Grounded Conversation, in which a dialogue system can proa…

2023

Out-of-Candidate Rectification for Weakly Supervised Semantic Segmentation

CVPR 2023poster

Weakly supervised semantic segmentation is typically inspired by class activation maps, which serve as pseudo masks with class-discriminative regions highlighted. Although tremendous efforts have been made to recall precise and complete locations for each class, existing methods still commonly suffe…

2023

Question Answering as Programming for Solving Time-Sensitive Questions

EMNLP 2023long main

Question answering plays a pivotal role in human daily life because it involves our acquisition of knowledge about the world. However, due to the dynamic and ever-changing nature of real-world facts, the answer can be completely different when the time constraint in the question changes. Recently, L…

Cited by 0SourcecodeScholar
2023

WiCo: Win-win Cooperation of Bottom-up and Top-down Referring Image Segmentation

IJCAI 2023poster

The top-down and bottom-up methods are two mainstreams of referring segmentation, while both methods have their own intrinsic weaknesses. Top-down methods are chiefly disturbed by Polar Negative (PN) errors owing to the lack of fine-grained cross-modal alignment. Bottom-up methods are mainly perturb…

Cited by 4SourcePDFScholar