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Ling Chen

64 accepted papers

2026

AMDP: Asynchronous Multi-Directional Pipeline Parallelism for Large-Scale Models Training

ICML 2026poster

Pipeline parallelism is essential for large-scale model training, but existing asynchronous approaches often degrade convergence due to parameter mismatch between forward and backward passes. We propose Asynchronous Multi-Directional Pipeline parallelism (AMDP) to mitigate this issue while sustainin…

Cited by 0SourceScholar
2026

AirDDE: Multifactor Neural Delay Differential Equations for Air Quality Forecasting

AAAI 2026technical

Accurate air quality forecasting is essential for public health and environmental sustainability, but remains challenging due to the complex pollutant dynamics. Existing deep learning methods often model pollutant dynamics as an instantaneous process, overlooking the intrinsic delays in pollutant pr

Cited by 0SourcePDFScholar
2026

Beyond Entity Correlations: Disentangling Event Causal Puzzles in Temporal Knowledge Graphs

ICLR 2026poster

Existing Temporal Knowledge Graph (TKG) representation learning approaches focus on modeling entity correlations. However, since TKG datasets are constructed from events, which inherently contain heterogeneous causalities, focusing solely on entity or relation level correlations is inadequate for ev…

Cited by 0SourceScholar
2026

Beyond In-Domain Detection: SpikeScore for Cross-Domain Hallucination Detection

ICLR 2026poster

Hallucination detection is critical for deploying large language models (LLMs) in real-world applications. Existing hallucination detection methods achieve strong performance when the training and test data come from the same domain, but they suffer from poor cross-domain generalization. In this pap…

Cited by 0SourcecodeScholar
2026

Bootstrapped Exploration with Causal Reasoning: A Training Paradigm for Adaptive Forecasting Agent

ICML 2026poster

Time series forecasting is critical in domains such as finance, energy, and healthcare, yet real-world datasets often exhibit non-stationarity, noise, missing values, and distribution shifts, posing severe challenges for generalization. In practice, industry solutions typically rely on customized fo…

Cited by 0SourceScholar
2026

ClimateAR: Multi-Scale Autoregressive Generative Modeling for Seasonal-to-Interannual Climate Forecasting

ICML 2026poster

Accurate seasonal‑to‑interannual climate forecasting provides critical support for decision-making in agriculture, energy, and disaster preparedness. Current deterministic models often fail to capture climate uncertainty, while existing generative approaches oversimplify the system by neglecting key…

Cited by 0SourceScholar
2026

Delving into Spectral Clustering with Vision-Language Representations

ICLR 2026poster

Spectral clustering is known as a powerful technique in unsupervised data analysis. The vast majority of approaches to spectral clustering are driven by a single modality, leaving the rich information in multi-modal representations untapped. Inspired by the recent success of vision-language pre-tr…

Cited by 0SourceScholar
2026

Explainable LLM Unlearning through Reasoning

ICLR 2026poster

LLM unlearning is essential for mitigating safety, copyright, and privacy concerns in pre-trained Large Language Models (LLMs). Compared to preference alignment, it offers a more explicit way by removing undesirable knowledge characterized by specific unlearning datasets. In previous works, Gradien…

Cited by 0SourcecodeScholar
2026

Investigating Social Bias Propagation in Federated Fine-tuning of Large Language Models

AAAI 2026technical

Large language models (LLMs) have achieved remarkable success in many domains, but concerns about data quality and privacy are growing. Federated Learning (FL) offers a privacy-preserving solution by training a model on local clients without sharing data. However, the impact of biased private data o

Cited by 0SourcePDFScholar
2026

LagLLM: LLM-empowered lead–lag dependency learning for spatial-temporal time series forecasting

ICML 2026poster

Spatial–temporal time series forecasting is challenging due to complex lead–lag dependencies, which are often ignored or inadequately modeled by existing methods. Thus, we propose LagLLM, the first LLM-empowered framework that explicitly models lead–lag dependencies by unifying data-driven dynamics …

Cited by 0SourceScholar
2026

M4V: Multimodal Mamba for Efficient Text-to-Video Generation

CVPR 2026

Text-to-video generation has significantly enriched content creation and holds the potential to evolve into powerful world simulators. However, modeling the vast spatiotemporal space remains computationally demanding, particularly when employing Transformers, which incur quadratic complexity in sequ

Cited by 0SourceScholar
2026

MoCast: Learning Turbulent Motions Under Physical Guidance for Precipitation Nowcasting

AAAI 2026technical

Precipitation nowcasting, a critical task for weather-sensitive applications, is highly challenging owing to the chaotic nature of atmospheric dynamics. Despite recent progress in deep learning, existing methods are limited in their capacity to model turbulent motions, one of the key drivers of prec

Cited by 0SourcePDFScholar
2026

Multi-Scale Hypergraph Meets LLMs: Aligning Large Language Models for Time Series Analysis

ICLR 2026poster

Recently, there has been great success in leveraging pre-trained large language models (LLMs) for time series analysis. The core idea lies in effectively aligning the modality between natural language and time series. However, the multi-scale structures of natural language and time series have not b…

Cited by 0SourceScholar
2026

Respecting Modality Gap in Post-hoc Out-of-distribution Detection with Pre-trained Vision-Language Models

ICML 2026poster

Out-of-distribution (OOD) detection has emerged as a popular technique to enhance the reliability of machine learning models by identifying unexpected inputs from unknown classes. Recent progress in pre-trained vision–language models (VLMs) has enabled zero-shot OOD detection without access to in-di…

Cited by 0SourceScholar
2026

TawPipe: Topology-Aware Weight Pipeline Parallelism for Accelerating Long-Context Large Models Training

AAAI 2026technical

Training large language models (LLMs) is fundamentally constrained by limited device memory and costly inter-device communication. Although pipeline parallelism alleviates memory pressure by partitioning models across devices, it incurs activation communication overhead that scales linearly with seq

Cited by 0SourcePDFScholar
2026

TimeMRA: LLM-Empowered Time Series Forecasting via Multi-Scale Retrieval-Augmented Representations

ICML 2026poster

Time series forecasting plays a pivotal role in data-driven decision-making across various time series domains. Recently, leveraging their ability to extract semantically rich representations, Large Language Models (LLMs) have achieved promising results in time series forecasting. However, existing …

Cited by 0SourceScholar
2026

Vision-Language Reasoning for Geolocalization: A Reinforcement Learning Approach

AAAI 2026technical

Recent advances in vision-language models have opened up new possibilities for reasoning-driven image geolocalization. However, existing approaches often rely on synthetic reasoning annotations or external image retrieval, which can limit interpretability and generalizability. In this paper, we pres

Cited by 0SourcePDFScholar
2025

A Survey of Large Language Models in Psychotherapy: Current Landscape and Future Directions

ACL 2025finding

Mental health is increasingly critical in contemporary healthcare, with psychotherapy demanding dynamic, context-sensitive interactions that traditional NLP methods struggle to capture. Large Language Models (LLMs) offer significant potential for addressing this gap due to their ability to handle ex…

Cited by 0SourcePDFScholar
2025

Benchmarking Foundation Models with Retrieval-Augmented Generation in Olympic-Level Physics Problem Solving

EMNLP 2025

Retrieval-augmented generation (RAG) with foundation models has achieved strong performance across diverse tasks, but their capacity for expert-level reasoning—such as solving Olympiad-level physics problems—remains largely unexplored. Inspired by the way students prepare for competitions by reviewi

Cited by 0SourcePDFScholar
2025

Beyond Node-Centric Modeling: Sketching Signed Networks with Simplicial Complexes

NeurIPS 2025poster

Signed networks can reflect more complex connections through positive and negative edges, and cost-effective signed network sketching can significantly benefit an important link sign prediction task in the era of big data. Existing signed network embedding algorithms mainly learn node representation…

Cited by 0SourceScholar
2025

Detecting Conversational Mental Manipulation with Intent-Aware Prompting

COLING 2025main

Mental manipulation severely undermines mental wellness by covertly and negatively distorting decision-making. While there is an increasing interest in mental health care within the natural language processing community, progress in tackling manipulation remains limited due to the complexity of dete…

2025

Hazards in Daily Life? Enabling Robots to Proactively Detect and Resolve Anomalies

NAACL 2025long

Existing household robots have made significant progress in performing routine tasks, such as cleaning floors or delivering objects. However, a key limitation of these robots is their inability to recognize potential problems or dangers in home environments. For example, a child may pick up and inge…

Cited by 1SourcePDFScholar
2025

MTPChat: A Multimodal Time-Aware Persona Dataset for Conversational Agents

NAACL 2025findings

Understanding temporal dynamics is critical for conversational agents, enabling effective content analysis and informed decision-making. However, time-aware datasets, particularly for persona-grounded conversations, are still limited, which narrows their scope and diminishes their complexity. To add…

Cited by 1SourcePDFScholar
2025

STA-CoT: Structured Target-Centric Agentic Chain-of-Thought for Consistent Multi-Image Geological Reasoning

EMNLP 2025

Reliable multi-image geological reasoning is essential for automating expert tasks in remote-sensing mineral exploration, yet remains challenging for multimodal large language models (MLLMs) due to the need for locating target areas, accurate cross-image referencing, and consistency over long reason

Cited by 0SourcePDFScholar
2025

Spiral of Silence in Large Language Model Agents

EMNLP 2025

The Spiral of Silence (SoS) theory holds that individuals with minority views often refrain from speaking out for fear of social isolation, enabling majority positions to dominate public discourse. When the “agents” are large language models (LLMs), however, the classical psychological explanation i

Cited by 0SourcePDFScholar
2025

Who Can Withstand Chat-Audio Attacks? An Evaluation Benchmark for Large Audio-Language Models

ACL 2025finding

Adversarial audio attacks pose a significant threat to the growing use of large audio-language models (LALMs) in voice-based human-machine interactions. While existing research focused on model-specific adversarial methods, real-world applications demand a more generalizable and universal approach t…

2025

Zero-shot Generalist Graph Anomaly Detection with Unified Neighborhood Prompts

IJCAI 2025

Graph anomaly detection (GAD), which aims to identify nodes in a graph that significantly deviate from normal patterns, plays a crucial role in broad application domains. However, existing GAD methods are one-model-for-one-dataset approaches, i.e., training a separate model for each graph dataset. T

2024

Ada-MSHyper: Adaptive Multi-Scale Hypergraph Transformer for Time Series Forecasting

NeurIPS 2024poster

Although transformer-based methods have achieved great success in multi-scale temporal pattern interaction modeling, two key challenges limit their further development: (1) Individual time points contain less semantic information, and leveraging attention to model pair-wise interactions may cause th…

2024

Call Me When Necessary: LLMs can Efficiently and Faithfully Reason over Structured Environments

ACL 2024findings

Large Language Models (LLMs) have shown potential in reasoning over structured environments, e.g., knowledge graphs and tables. Such tasks typically require multi-hop reasoning, i.e., match natural language utterance with instances in the environment. Previous works adopt LLMs to incrementally build…

2024

DECRL: A Deep Evolutionary Clustering Jointed Temporal Knowledge Graph Representation Learning Approach

NeurIPS 2024poster

Temporal Knowledge Graph (TKG) representation learning aims to map temporal evolving entities and relations to embedded representations in a continuous low-dimensional vector space. However, existing approaches cannot capture the temporal evolution of high-order correlations in TKGs. To this end, we…

Cited by 0SourcePDFScholar
2024

Enhanced Visual Instruction Tuning with Synthesized Image-Dialogue Data

ACL 2024findings

The remarkable multimodal capabilities demonstrated by OpenAI’s GPT-4 have sparked significant interest in the development of multimodal Large Language Models (LLMs). A primary research objective of such models is to align visual and textual modalities effectively while comprehending human instructi…

2024

Enhancing Temporal Sensitivity and Reasoning for Time-Sensitive Question Answering

EMNLP 2024finding

Time-Sensitive Question Answering (TSQA) demands the effective utilization of specific temporal contexts, encompassing multiple time-evolving facts, to address time-sensitive questions. This necessitates not only the parsing of temporal information within questions but also the identification and un…

Cited by 3SourcePDFScholar
2024

Large Language Models Are Neurosymbolic Reasoners

AAAI 2024technical

A wide range of real-world applications is characterized by their symbolic nature, necessitating a strong capability for symbolic reasoning. This paper investigates the potential application of Large Language Models (LLMs) as symbolic reasoners. We focus on text-based games, significant benchmarks f…

2024

Learning with Counterfactual Explanations for Radiology Report Generation

ECCV 2024poster

"Due to the common content of anatomy, radiology images with their corresponding reports exhibit high similarity. Such inherent data bias can predispose automatic report generation models to learn entangled and spurious representations resulting in misdiagnostic reports. To tackle these, we propose…

2024

MedINST: Meta Dataset of Biomedical Instructions

EMNLP 2024finding

The integration of large language model (LLM) techniques in the field of medical analysis has brought about significant advancements, yet the scarcity of large, diverse, and well-annotated datasets remains a major challenge. Medical data and tasks, which vary in format, size, and other parameters, r…

2024

More than Minorities and Majorities: Understanding Multilateral Bias in Language Generation

ACL 2024findings

Pretrained models learned from real corpora can often capture undesirable features, leading to bias issues against different demographic groups. Most existing studies on bias dataset construction or bias mitigation methods only focus on one demographic group pair to study a certain bias, e.g. black…

Cited by 0SourcePDFScholar
2024

Replay-and-Forget-Free Graph Class-Incremental Learning: A Task Profiling and Prompting Approach

NeurIPS 2024poster

Class-incremental learning (CIL) aims to continually learn a sequence of tasks, with each task consisting of a set of unique classes. Graph CIL (GCIL) follows the same setting but needs to deal with graph tasks (e.g., node classification in a graph). The key characteristic of CIL lies in the absence…

2024

RetrievalQA: Assessing Adaptive Retrieval-Augmented Generation for Short-form Open-Domain Question Answering

ACL 2024findings

Adaptive retrieval-augmented generation (ARAG) aims to dynamically determine the necessity of retrieval for queries instead of retrieving indiscriminately to enhance the efficiency and relevance of the sourced information. However, previous works largely overlook the evaluation of ARAG approaches, l…

2024

WeatherGNN: Exploiting Meteo- and Spatial-Dependencies for Local Numerical Weather Prediction Bias-Correction

IJCAI 2024poster

Due to insufficient local area information, numerical weather prediction (NWP) may yield biases for specific areas. Previous studies correct biases mainly by employing handcrafted features or applying data-driven methods intuitively, overlooking the complicated dependencies between weather factors a…

Cited by 6SourcePDFScholar
2023

CHBias: Bias Evaluation and Mitigation of Chinese Conversational Language Models

ACL 2023long

redWarning: This paper contains content that may be offensive or upsetting.Pretrained conversational agents have been exposed to safety issues, exhibiting a range of stereotypical human biases such as gender bias. However, there are still limited bias categories in current research, and most of them…

2023

CITB: A Benchmark for Continual Instruction Tuning

EMNLP 2023long findings

Continual learning (CL) is a paradigm that aims to replicate the human ability to learn and accumulate knowledge continually without forgetting previous knowledge and transferring it to new tasks. Recent instruction tuning (IT) involves fine-tuning models to make them more adaptable to solving NLP t…

Cited by 0SourcecodeScholar
2023

Global-correlated 3D-decoupling Transformer for Clothed Avatar Reconstruction

NeurIPS 2023poster

Reconstructing 3D clothed human avatars from single images is a challenging task, especially when encountering complex poses and loose clothing. Current methods exhibit limitations in performance, largely attributable to their dependence on insufficient 2D image features and inconsistent query metho…

2023

How Do Large Language Models Capture the Ever-changing World Knowledge? A Review of Recent Advances

EMNLP 2023long main

Although large language models (LLMs) are impressive in solving various tasks, they can quickly be outdated after deployment. Maintaining their up-to-date status is a pressing concern in the current era. This paper provides a comprehensive review of recent advances in aligning deployed LLMs with the…

Cited by 0SourcecodeScholar
2023

Loan Fraud Users Detection in Online Lending Leveraging Multiple Data Views

AAAI 2023technical

In recent years, online lending platforms have been becoming attractive for micro-financing and popular in financial industries. However, such online lending platforms face a high risk of failure due to the lack of expertise on borrowers' creditworthness. Thus, risk forecasting is important to avoid…

Cited by 5SourcePDFScholar
2023

SLCA: Slow Learner with Classifier Alignment for Continual Learning on a Pre-trained Model

ICCV 2023poster

The goal of continual learning is to improve the performance of recognition models in learning sequentially arrived data. Although most existing works are established on the premise of learning from scratch, growing efforts have been devoted to incorporating the benefits of pre-training. However, ho…

Cited by 148PDFcodeScholar
2023

SWL-Adapt: An Unsupervised Domain Adaptation Model with Sample Weight Learning for Cross-User Wearable Human Activity Recognition

AAAI 2023technical

In practice, Wearable Human Activity Recognition (WHAR) models usually face performance degradation on the new user due to user variance. Unsupervised domain adaptation (UDA) becomes the natural solution to cross-user WHAR under annotation scarcity. Existing UDA models usually align samples across d…

2023

Semi-supervised Credit Card Fraud Detection via Attribute-Driven Graph Representation

AAAI 2023technical

Credit card fraud incurs a considerable cost for both cardholders and issuing banks. Contemporary methods apply machine learning-based classifiers to detect fraudulent behavior from labeled transaction records. But labeled data are usually a small proportion of billions of real transactions due to e…

2023

Stay Moral and Explore: Learn to Behave Morally in Text-based Games

ICLR 2023poster

Reinforcement learning (RL) in text-based games has developed rapidly and achieved promising results. However, little effort has been expended to design agents that pursue objectives while behaving morally, which is a critical issue in the field of autonomous agents. In this paper, we propose a gene…

Cited by 13SourcePDFScholar
2023

Turn-Level Active Learning for Dialogue State Tracking

EMNLP 2023long main

Dialogue state tracking (DST) plays an important role in task-oriented dialogue systems. However, collecting a large amount of turn-by-turn annotated dialogue data is costly and inefficient. In this paper, we propose a novel turn-level active learning framework for DST to actively select turns in di…

Cited by 0SourcecodeScholar
2022

Is Neural Topic Modelling Better than Clustering? An Empirical Study on Clustering with Contextual Embeddings for Topics

NAACL 2022long

Recent work incorporates pre-trained word embeddings such as BERT embeddings into Neural Topic Models (NTMs), generating highly coherent topics. However, with high-quality contextualized document representations, do we really need sophisticated neural models to obtain coherent and interpretable topi…

2022

Mask Matching Transformer for Few-Shot Segmentation

NeurIPS 2022accept

In this paper, we aim to tackle the challenging few-shot segmentation task from a new perspective. Typical methods follow the paradigm to firstly learn prototypical features from support images and then match query features in pixel-level to obtain segmentation results. However, to obtain satisfacto…

2022

Perceiving the World: Question-guided Reinforcement Learning for Text-based Games

ACL 2022long

Text-based games provide an interactive way to study natural language processing. While deep reinforcement learning has shown effectiveness in developing the game playing agent, the low sample efficiency and the large action space remain to be the two major challenges that hinder the DRL from being…

2022

Towards Deepening Graph Neural Networks: A GNTK-based Optimization Perspective

ICLR 2022poster

Graph convolutional networks (GCNs) and their variants have achieved great success in dealing with graph-structured data. Nevertheless, it is well known that deep GCNs suffer from the over-smoothing problem, where node representations tend to be indistinguishable as more layers are stacked up. The t…

Cited by 33SourcePDFScholar
2021

A Multi-Mode Modulator for Multi-Domain Few-Shot Classification

ICCV 2021poster

Most existing few-shot classification methods only consider generalization on one dataset (i.e., single-domain), failing to transfer across various seen and unseen domains. In this paper, we consider the more realistic multi-domain few-shot classification problem to investigate the cross-domain gene…

Cited by 44PDFcodeScholar
2021

Generalization in Text-based Games via Hierarchical Reinforcement Learning

EMNLP 2021finding

Deep reinforcement learning provides a promising approach for text-based games in studying natural language communication between humans and artificial agents. However, the generalization still remains a big challenge as the agents depend critically on the complexity and variety of training tasks. I…

2020

Deep Reinforcement Learning with Stacked Hierarchical Attention for Text-based Games

NeurIPS 2020poster

We study reinforcement learning (RL) for text-based games, which are interactive simulations in the context of natural language. While different methods have been developed to represent the environment information and language actions, existing RL agents are not empowered with any reasoning capabili…

2020

Recurrent Dirichlet Belief Networks for interpretable Dynamic Relational Data Modelling

IJCAI 2020poster

The Dirichlet Belief Network~(DirBN) has been recently proposed as a promising approach in learning interpretable deep latent representations for objects. In this work, we leverage its interpretable modelling architecture and propose a deep dynamic probabilistic framework -- the Recurrent Dirichle…

Cited by 0SourcePDFScholar
2019

Scalable Deep Generative Relational Model with High-Order Node Dependence

NeurIPS 2019poster

In this work, we propose a probabilistic framework for relational data modelling and latent structure exploring. Given the possible feature information for the nodes in a network, our model builds up a deep architecture that can approximate to the possible nonlinear mappings between the nodes' featu…