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Runlong Yu

10 accepted papers

2026

GREAT: Generalizable Representation Enhancement via Auxiliary Transformations for Zero-Shot Environmental Prediction

AAAI 2026technical

Environmental modeling faces critical challenges in predicting ecosystem dynamics across unmonitored regions due to limited and geographically imbalanced observation data. This challenge is compounded by spatial heterogeneity, causing models to learn spurious patterns that fit only local data. Unlik

Cited by 0SourcePDFScholar
2026

LSDTs: LLM-Augmented Semantic Digital Twins for Adaptive Knowledge-Intensive Infrastructure Planning

AAAI 2026technical

Digital Twins (DTs) offer powerful tools for managing complex infrastructure systems, but their effectiveness is often limited by challenges in integrating unstructured knowledge. Recent advances in Large Language Models (LLMs) bring new potential to address this gap, with strong abilities in extrac

Cited by 0SourcePDFScholar
2026

Learning PDE Solvers with Physics and Data: A Unifying View of Physics-Informed Neural Networks and Neural Operators

IJCAI 2026

Partial differential equations (PDEs) are central to scientific modeling. Nowadays, modern workflows increasingly rely on learning-based components to support model reuse, inference, and integration across large computational processes. Despite the emergence of various physics-aware data-driven appr

Cited by 0Scholar
2025

Decoupling and Reconstructing: A Multimodal Sentiment Analysis Framework Towards Robustness

IJCAI 2025

Multimodal sentiment analysis (MSA) has shown promising results but often poses significant challenges in real-world applications due to its dependence on the complete and aligned multimodal sequences. While existing approaches attempt to address missing modalities through feature reconstruction, th

Cited by 0SourcePDFScholar
2025

Harnessing Multimodal Large Language Models for Multimodal Sequential Recommendation

AAAI 2025technical

Recent advances in Large Language Models (LLMs) have demonstrated significant potential in the field of Recommendation Systems (RSs). Most existing studies have focused on converting user behavior logs into textual prompts and leveraging techniques such as prompt tuning to enable LLMs for recommend…

2025

LLMs as World Models: Data-Driven and Human-Centered Pre-Event Simulation for Disaster Impact Assessment

EMNLP 2025

Efficient simulation is essential for enhancing proactive preparedness for sudden-onset disasters such as earthquakes. Recent advancements in large language models (LLMs) as world models show promise in simulating complex scenarios. This study examines multiple LLMs to proactively estimate perceived

Cited by 0SourcePDFScholar
2025

Multi-Scale Graph Learning for Anti-Sparse Downscaling

AAAI 2025technical

Water temperature can vary substantially even across short distances within the same sub-watershed. Accurate prediction of stream water temperature at fine spatial resolutions (i.e., fine scales, ≤ 1 km) enables precise interventions to maintain water quality and protect aquatic habitats. Although s…

Cited by 0SourcePDFScholar
2025

Physics-Guided Foundation Model for Scientific Discovery: An Application to Aquatic Science

AAAI 2025technical

Physics-guided machine learning (PGML) has become a prevalent approach in studying scientific systems due to its ability to integrate scientific theories for enhancing machine learning (ML) models. However, most PGML approaches are tailored to isolated and relatively simple tasks, which limits their…

2023

Untargeted Attack against Federated Recommendation Systems via Poisonous Item Embeddings and the Defense

AAAI 2023technical

Federated recommendation (FedRec) can train personalized recommenders without collecting user data, but the decentralized nature makes it susceptible to poisoning attacks. Most previous studies focus on the targeted attack to promote certain items, while the untargeted attack that aims to degrade th…

2021

Item Response Ranking for Cognitive Diagnosis

IJCAI 2021poster

Cognitive diagnosis, a fundamental task in education area, aims at providing an approach to reveal the proficiency level of students on knowledge concepts. Actually, monotonicity is one of the basic conditions in cognitive diagnosis theory, which assumes that student's proficiency is monotonic with…

Cited by 34SourcePDFScholar