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Lun Du

24 accepted papers

2026

Automated Formalization via Conceptual Retrieval-Augmented LLMs

ICLR 2026poster

Interactive theorem provers (ITPs) require manual formalization, which is labor-intensive and demands expert knowledge. While automated formalization offers a potential solution, it faces two major challenges: model hallucination (e.g., undefined predicates, symbol misuse, and version incompatibilit…

Cited by 0SourcecodeScholar
2026

EvolProver: Advancing Automated theorem proving by Evolving Formalized Problems via Symmetry and Difficulty

ICLR 2026poster

Large Language Models (LLMs) for formal theorem proving have shown significant promise, yet they often lack generalizability and are fragile to even minor transformations of problem statements. To address this limitation, we introduce a novel data augmentation pipeline designed to enhance model robu…

Cited by 0SourceScholar
2026

Hierarchy Decoding: A Training-free Parallel Decoding Strategy for Diffusion Large Language Models

ICLR 2026poster

The utilization of large language models (LLMs) has become increasingly widespread, and has attracted considerable attention. Although the emergence of discrete diffusion large language models (dLLMs) mitigates the inference latency inherent in autoregressive LLM decoding, its computational overhead…

Cited by 0SourceScholar
2026

InnoGym: Benchmarking the Innovation Potential of AI Agents

ICLR 2026poster

LLMs and Agents have achieved impressive progress in code generation, mathematical reasoning, and scientific discovery. However, existing benchmarks primarily measure correctness, overlooking the diversity of methods behind solutions. True innovation depends not only on producing correct answers but…

Cited by 0SourcecodeScholar
2026

Task-Aware Retrieval Augmentation for Dynamic Recommendation

AAAI 2026technical

Dynamic recommendation systems aim to provide personalized suggestions by modeling temporal user-item interactions across time-series behavioral data. Recent studies have leveraged pre-trained dynamic graph neural networks (GNNs) to learn user-item representations over temporal snapshot graphs. Howe

Cited by 0SourcePDFScholar
2026

Why Do Open-Source LLMs Struggle with Data Analysis? A Systematic Empirical Study

AAAI 2026technical

Large Language Models (LLMs) hold promise in automating data analysis tasks, yet open-source models face significant limitations in these kinds of reasoning-intensive scenarios. In this work, we investigate strategies to enhance the data analysis capabilities of open-source LLMs. By curating a seed

Cited by 0SourcePDFScholar
2025

Extract Information from Hybrid Long Documents Leveraging LLMs: A Framework and Dataset

ICASSP 2025accepted

Large Language Models (LLMs) demonstrate exceptional performance in textual understanding and tabular reasoning tasks. However, their ability to comprehend and analyze hybrid text, containing textual and tabular data, remains unexplored. The hybrid text often appears in the form of hybrid long docum…

Cited by 0SourceScholar
2025

LightThinker: Thinking Step-by-Step Compression

EMNLP 2025

Large language models (LLMs) have shown remarkable performance in complex reasoning tasks, but their efficiency is hindered by the substantial memory and computational costs associated with generating lengthy tokens. In this paper, we propose LightThinker, a novel method that enables LLMs to dynamic

2025

Retrieval-Augmented Language Models are Mimetic Theorem Provers

EMNLP 2025

Large language models have demonstrated considerable capabilities in various mathematical tasks, yet they often fall short in rigorous, proof-based reasoning essential for research-level mathematics. Retrieval-augmented generation presents a promising direction for enhancing these capabilities. This

Cited by 0SourcePDFScholar
2024

TAP4LLM: Table Provider on Sampling, Augmenting, and Packing Semi-structured Data for Large Language Model Reasoning

EMNLP 2024finding

Table reasoning tasks have shown remarkable progress with the development of large language models (LLMs), which involve interpreting and drawing conclusions from tabular data based on natural language (NL) questions. Existing solutions mainly tested on smaller tables face scalability issues and str…

2024

TAROT: A Hierarchical Framework with Multitask co-pretraining on Semi-Structured Data Towards Effective Person-Job fit

ICASSP 2024accepted

Person-job fit is an essential part of online recruitment platforms in serving various downstream applications like Job Search and Candidate Recommendation. Recently, pretrained large language models have further enhanced the effectiveness by leveraging richer textual information in user profiles an…

Cited by 0SourceScholar
2024

Tackling Long Code Search with Splitting, Encoding, and Aggregating

COLING 2024main

Code search with natural language helps us reuse existing code snippets. Thanks to the Transformer-based pretraining models, the performance of code search has been improved significantly. However, due to the quadratic complexity of multi-head self-attention, there is a limit on the input token leng…

2024

Text-to-Image Generation for Abstract Concepts

AAAI 2024technical

Recent years have witnessed the substantial progress of large-scale models across various domains, such as natural language processing and computer vision, facilitating the expression of concrete concepts. Unlike concrete concepts that are usually directly associated with physical objects, expressin…

2024

Text2Analysis: A Benchmark of Table Question Answering with Advanced Data Analysis and Unclear Queries

AAAI 2024technical

Tabular data analysis is crucial in various fields, and large language models show promise in this area. However, current research mostly focuses on rudimentary tasks like Text2SQL and TableQA, neglecting advanced analysis like forecasting and chart generation. To address this gap, we developed the…

2023

Causal-Based Supervision of Attention in Graph Neural Network: A Better and Simpler Choice towards Powerful Attention

IJCAI 2023poster

Recent years have witnessed the great potential of attention mechanism in graph representation learning. However, while variants of attention-based GNNs are setting new benchmarks for numerous real-world datasets, recent works have pointed out that their induced attentions are less robust and genera…

Cited by 4SourcePDFScholar
2023

Out-of-Distribution Detection based on In-Distribution Data Patterns Memorization with Modern Hopfield Energy

ICLR 2023poster

Out-of-Distribution (OOD) detection is essential for safety-critical applications of deep neural networks. OOD detection is challenging since DNN models may produce very high logits value even for OOD samples. Hence, it is of great difficulty to discriminate OOD data by directly adopting Softmax on…

2023

SheetPT: Spreadsheet Pre-training Based on Hierarchical Attention Network

AAAI 2023technical

Spreadsheets are an important and unique type of business document for data storage, analysis and presentation. The distinction between spreadsheets and most other types of digital documents lies in that spreadsheets provide users with high flexibility of data organization on the grid. Existing rela…

Cited by 0SourcePDFScholar
2023

Unveiling the Black Box of PLMs with Semantic Anchors: Towards Interpretable Neural Semantic Parsing

AAAI 2023technical

The recent prevalence of pretrained language models (PLMs) has dramatically shifted the paradigm of semantic parsing, where the mapping from natural language utterances to structured logical forms is now formulated as a Seq2Seq task. Despite the promising performance, previous PLM-based approaches o…

Cited by 5SourcePDFScholar
2022

Accelerating Code Search with Deep Hashing and Code Classification

ACL 2022long

Code search is to search reusable code snippets from source code corpus based on natural languages queries. Deep learning-based methods on code search have shown promising results. However, previous methods focus on retrieval accuracy, but lacked attention to the efficiency of the retrieval process.…

Cited by 18SourcePDFScholar
2022

Neuron with Steady Response Leads to Better Generalization

NeurIPS 2022accept

Regularization can mitigate the generalization gap between training and inference by introducing inductive bias. Existing works have already proposed various inductive biases from diverse perspectives. However, none of them explores inductive bias from the perspective of class-dependent response dis…

Cited by 6SourcePDFScholar
2022

RACE: Retrieval-augmented Commit Message Generation

EMNLP 2022main

Commit messages are important for software development and maintenance. Many neural network-based approaches have been proposed and shown promising results on automatic commit message generation. However, the generated commit messages could be repetitive or redundant. In this paper, we propose RACE,…

2021

CAST: Enhancing Code Summarization with Hierarchical Splitting and Reconstruction of Abstract Syntax Trees

EMNLP 2021main

Code summarization aims to generate concise natural language descriptions of source code, which can help improve program comprehension and maintenance. Recent studies show that syntactic and structural information extracted from abstract syntax trees (ASTs) is conducive to summary generation. Howeve…

2021

Fast Hierarchy Preserving Graph Embedding via Subspace Constraints

ICASSP 2021accepted

Hierarchy preserving network embedding is a method that project nodes into feature space by preserving the hierarchy property of networks. Recently, researches on network representation have considerably profited from taking hierarchy into consideration. Among these works, SpaceNE <sup xmlns:mml="ht…

Cited by 0SourceScholar
2020

Domain Adaptive Classification on Heterogeneous Information Networks

IJCAI 2020poster

Heterogeneous Information Networks (HINs) are ubiquitous structures in that they can depict complex relational data. Due to their complexity, it is hard to obtain sufficient labeled data on HINs, hampering classification on HINs. While domain adaptation (DA) techniques have been widely utilized in i…