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Pan Lu

35 accepted papers

2026

In-The-Flow Agentic System Optimization for Effective Planning and Tool Use

ICLR 2026oral

Outcome-driven reinforcement learning has advanced reasoning in large language models (LLMs), but prevailing tool-augmented approaches train a single, monolithic policy that interleaves thoughts and tool calls under full context; this scales poorly with long horizons and diverse tools and generalize…

Cited by 0SourcecodeScholar
2026

Latent Collaboration in Multi-Agent Systems

ICML 2026spotlight

Multi-agent systems (MAS) extend large language models (LLMs) from independent single-model reasoning to coordinative system-level intelligence. While existing LLM agents depend on text-based mediation for reasoning and communication, we take a step forward by enabling models to collaborate directly…

Cited by 0SourceScholar
2026

Proteo-R1: Thinking Foundation Models for De Novo Protein Binder Design

ICML 2026poster

Recent advances in generative diffusion and flow-matching models have revolutionized molecular design, enabling the creation of novel proteins, small molecules, and RNA sequences with unprecedented fidelity. Yet, these models remain intuitive rather than intelligent—they generate without reasoning. …

Cited by 0SourceScholar
2026

TaTToo: Tool-Grounded Thinking PRM for Test-Time Scaling in Tabular Reasoning

ICLR 2026poster

Process Reward Models (PRMs) have recently emerged as a powerful framework for enhancing the reasoning capabilities of large reasoning models (LRMs), particularly in the context of test-time scaling (TTS). However, their potential for supervising LRMs on tabular reasoning domains remains underexplor…

Cited by 0SourceScholar
2025

ChemAgent: Self-updating Memories in Large Language Models Improves Chemical Reasoning

ICLR 2025poster

Chemical reasoning usually involves complex, multi-step processes that demand precise calculations, where even minor errors can lead to cascading failures. Furthermore, large language models (LLMs) encounter difficulties handling domain-specific formulas, executing reasoning steps accurately, and in…

2025

MMSearch: Unveiling the Potential of Large Models as Multi-modal Search Engines

ICLR 2025poster

The advent of Large Language Models (LLMs) has paved the way for AI search engines, e.g., SearchGPT, showcasing a new paradigm in human-internet interaction. However, most current AI search engines are limited to text-only settings, neglecting the multimodal user queries and the text-image interleav…

Cited by 0SourcePDFScholar
2025

MRAG-Bench: Vision-Centric Evaluation for Retrieval-Augmented Multimodal Models

ICLR 2025poster

Existing multimodal retrieval benchmarks primarily focus on evaluating whether models can retrieve and utilize external textual knowledge for question answering. However, there are scenarios where retrieving visual information is either more beneficial or easier to access than textual data. In this…

Cited by 9SourcePDFScholar
2025

MuirBench: A Comprehensive Benchmark for Robust Multi-image Understanding

ICLR 2025poster

We introduce MuirBench, a comprehensive benchmark that focuses on robust multi-image understanding capabilities of multimodal LLMs. MuirBench consists of 12 diverse multi-image tasks (e.g., scene understanding, ordering) that involve 10 categories of multi-image relations (e.g., multiview, temporal…

2025

Protein Large Language Models: A Comprehensive Survey

EMNLP 2025

Protein-specific large language models (ProteinLLMs) are revolutionizing protein science by enabling more efficient protein structure prediction, function annotation, and design. While existing surveys focus on specific aspects or applications, this work provides the first comprehensive overview of

2025

Solving Inequality Proofs with Large Language Models

NeurIPS 2025spotlight

Inequality proving, crucial across diverse scientific and mathematical fields, tests advanced reasoning skills such as discovering tight bounds and strategic theorem application. This makes it a distinct, demanding frontier for large language models (LLMs), offering insights beyond general mathemati…

Cited by 0SourcecodeScholar
2025

VISCO: Benchmarking Fine-Grained Critique and Correction Towards Self-Improvement in Visual Reasoning

CVPR 2025poster

The ability of large vision-language models (LVLMs) to critique and correct their reasoning is an essential building block towards their self-improvement. However, a systematic analysis of such capabilities in LVLMs is still lacking. We propose VISCO, the first benchmark to extensively analyze the f…

Cited by 3SourcePDFScholar
2024

Are LLMs Capable of Data-based Statistical and Causal Reasoning? Benchmarking Advanced Quantitative Reasoning with Data

ACL 2024findings

Quantitative reasoning is a critical skill to analyze data, yet the assessment of such ability remains limited. To address this gap, we introduce the Quantitative Reasoning with Data (QRData) benchmark, aiming to evaluate Large Language Models’ capability in statistical and causal reasoning with rea…

2024

Enhancing Large Vision Language Models with Self-Training on Image Comprehension

NeurIPS 2024poster

Large vision language models (LVLMs) integrate large language models (LLMs) with pre-trained vision encoders, thereby activating the perception capability of the model to understand image inputs for different queries and conduct subsequent reasoning. Improving this capability requires high-quality v…

2024

LLaMA-Adapter: Efficient Fine-tuning of Large Language Models with Zero-initialized Attention

ICLR 2024poster

With the rising tide of large language models (LLMs), there has been a growing interest in developing general-purpose instruction-following models, e.g., ChatGPT. To this end, we present LLaMA-Adapter, a lightweight adaption method for efficient instruction tuning of LLaMA. Using 52K self-instruct d…

2024

MathVerse: Does Your Multi-modal LLM Truly See the Diagrams in Visual Math Problems?

ECCV 2024poster

"The remarkable progress of Multi-modal Large Language Models (MLLMs) has gained unparalleled attention. However, their capabilities in visual math problem-solving remain insufficiently evaluated and understood. We investigate current benchmarks to incorporate excessive visual content within textual…

2024

MathVista: Evaluating Mathematical Reasoning of Foundation Models in Visual Contexts

ICLR 2024oral

Large Language Models (LLMs) and Large Multimodal Models (LMMs) exhibit impressive problem-solving skills in many tasks and domains, but their ability in mathematical reasoning in visual contexts has not been systematically studied. To bridge this gap, we present MathVista, a benchmark designed to c…

2024

Model Editing Harms General Abilities of Large Language Models: Regularization to the Rescue

EMNLP 2024main

Model editing is a technique that edits the large language models (LLMs) with updated knowledge to alleviate hallucinations without resource-intensive retraining. While current model editing methods can effectively modify a model’s behavior within a specific area of interest, they often overlook the…

2024

Multimodal Procedural Planning via Dual Text-Image Prompting

EMNLP 2024finding

Embodied agents have achieved prominent performance in following human instructions to complete tasks. However, the potential of providing instructions informed by texts and images to assist humans in completing tasks remains underexplored. To uncover this capability, we present the multimodal proce…

2024

SPHINX-X: Scaling Data and Parameters for a Family of Multi-modal Large Language Models

ICML 2024poster

We propose SPHINX-X, an extensive Multi-modality Large Language Model (MLLM) series developed upon SPHINX. To improve the architecture and training efficiency, we modify the SPHINX framework by removing redundant visual encoders, bypassing fully-padded sub-images with skip tokens, and simplifying mu…

2024

SciBench: Evaluating College-Level Scientific Problem-Solving Abilities of Large Language Models

ICML 2024poster

Most existing Large Language Model (LLM) benchmarks on scientific problem reasoning focus on problems grounded in high-school subjects and are confined to elementary algebraic operations. To systematically examine the reasoning capabilities required for solving complex scientific problems, we introd…

2024

VDebugger: Harnessing Execution Feedback for Debugging Visual Programs

EMNLP 2024finding

Visual programs are executable code generated by large language models to address visual reasoning problems. They decompose complex questions into multiple reasoning steps and invoke specialized models for each step to solve the problems. However, these programs are prone to logic errors, with our p…

2023

A Survey of Deep Learning for Mathematical Reasoning

ACL 2023long

Mathematical reasoning is a fundamental aspect of human intelligence and is applicable in various fields, including science, engineering, finance, and everyday life. The development of artificial intelligence (AI) systems capable of solving math problems and proving theorems in language has garnered…

2023

Chameleon: Plug-and-Play Compositional Reasoning with Large Language Models

NeurIPS 2023poster

Large language models (LLMs) have achieved remarkable progress in solving various natural language processing tasks due to emergent reasoning abilities. However, LLMs have inherent limitations as they are incapable of accessing up-to-date information (stored on the Web or in task-specific knowledge…

Cited by 456SourcePDFScholar
2023

Dynamic Prompt Learning via Policy Gradient for Semi-structured Mathematical Reasoning

ICLR 2023poster

Mathematical reasoning, a core ability of human intelligence, presents unique challenges for machines in abstract thinking and logical reasoning. Recent large pre-trained language models such as GPT-3 have achieved remarkable progress on mathematical reasoning tasks written in text form, such as mat…

2023

TheoremQA: A Theorem-driven Question Answering Dataset

EMNLP 2023long main

The recent LLMs like GPT-4 and PaLM-2 have made tremendous progress in solving fundamental math problems like GSM8K by achieving over 90% accuracy. However, their capabilities to solve more challenging math problems which require domain-specific knowledge (i.e. theorem) have yet to be investigated.…

Cited by 0SourcecodeScholar
2022

LILA: A Unified Benchmark for Mathematical Reasoning

EMNLP 2022main

Mathematical reasoning skills are essential for general-purpose intelligentsystems to perform tasks from grocery shopping to climate modeling.Towards evaluating and improving AI systems in this domain, we proposeLILA, a unified mathematical reasoning benchmark consisting of 23 diversetasks along fou…

2022

Learn to Explain: Multimodal Reasoning via Thought Chains for Science Question Answering

NeurIPS 2022accept

When answering a question, humans utilize the information available across different modalities to synthesize a consistent and complete chain of thought (CoT). This process is normally a black box in the case of deep learning models like large-scale language models. Recently, science question benchm…

2022

Learning from the Tangram to Solve Mini Visual Tasks

AAAI 2022technical

Current pre-training methods in computer vision focus on natural images in the daily-life context. However, abstract diagrams such as icons and symbols are common and important in the real world. We are inspired by Tangram, a game that requires replicating an abstract pattern from seven dissected sh…

2022

UniGeo: Unifying Geometry Logical Reasoning via Reformulating Mathematical Expression

EMNLP 2022main

Geometry problem solving is a well-recognized testbed for evaluating the high-level multi-modal reasoning capability of deep models. In most existing works, two main geometry problems: calculation and proving, are usually treated as two specific tasks, hindering a deep model to unify its reasoning c…

2022

ValueNet: A New Dataset for Human Value Driven Dialogue System

AAAI 2022technical

Building a socially intelligent agent involves many challenges, one of which is to teach the agent to speak guided by its value like a human. However, value-driven chatbots are still understudied in the area of dialogue systems. Most existing datasets focus on commonsense reasoning or social norm mo…

2021

IconQA: A New Benchmark for Abstract Diagram Understanding and Visual Language Reasoning

NeurIPS 2021poster

Current visual question answering (VQA) tasks mainly consider answering human-annotated questions for natural images. However, aside from natural images, abstract diagrams with semantic richness are still understudied in visual understanding and reasoning research. In this work, we introduce a new c…

Cited by 204SourcecodeScholar
2021

Inter-GPS: Interpretable Geometry Problem Solving with Formal Language and Symbolic Reasoning

ACL 2021long

Geometry problem solving has attracted much attention in the NLP community recently. The task is challenging as it requires abstract problem understanding and symbolic reasoning with axiomatic knowledge. However, current datasets are either small in scale or not publicly available. Thus, we construc…

2021

SocAoG: Incremental Graph Parsing for Social Relation Inference in Dialogues

ACL 2021long

Inferring social relations from dialogues is vital for building emotionally intelligent robots to interpret human language better and act accordingly. We model the social network as an And-or Graph, named SocAoG, for the consistency of relations among a group and leveraging attributes as inference c…

2019

Dynamic Fusion With Intra- and Inter-Modality Attention Flow for Visual Question Answering

CVPR 2019oral

Learning effective fusion of multi-modality features is at the heart of visual question answering. We propose a novel method of dynamically fuse multi-modal features with intra- and inter-modality information flow, which alternatively pass dynamic information between and across the visual and langua…

Cited by 383PDFScholar
2018

Question-Guided Hybrid Convolution for Visual Question Answering

ECCV 2018poster

In this paper, we propose a novel Question-Guided Hybrid Convolution (QGHC) network for Visual Question Answering (VQA). Most state-of-the-art VQA methods fuse the high-level textual and visual features from the neural network and abandon the visual spatial information when learning multi-modal feat…

Cited by 93SourcePDFScholar