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Kun Yi

20 accepted papers

2026

MTP: Exploring Multimodal Urban Traffic Profiling with Modality Augmentation and Spectrum Fusion

AAAI 2026technical

With rapid urbanization in the modern era, traffic signals from various sensors have been playing a significant role in monitoring the states of cities, which provides a strong foundation in ensuring safe travel, reducing traffic congestion and optimizing urban mobility. Most existing methods for tr

Cited by 0SourcePDFScholar
2026

Olivia: Harmonizing Time Series Foundation Models with Power Spectral Density

ICML 2026poster

Time series foundation models rely on large-scale pretraining over diverse datasets across domains, yet their heterogeneity in temporal patterns could hinder the effectiveness of training and learning transferable time series representations. Inspired a fundamental concept, normalized power spectral…

Cited by 0SourceScholar
2025

Amplifier: Bringing Attention to Neglected Low-Energy Components in Time Series Forecasting

AAAI 2025technical

We propose an energy amplification technique to address the issue that existing models easily overlook low-energy components in time series forecasting. This technique comprises an energy amplification block and an energy restoration block. The energy amplification block enhances the energy of low-e…

2025

Improving Prediction Certainty Estimation for Reliable Early Exiting via Null Space Projection

IJCAI 2025

Early exiting has demonstrated great potential in accelerating the inference of pre-trained language models (PLMs) by enabling easy samples to exit at shallow layers, eliminating the need for executing deeper layers. However, existing early exiting methods primarily rely on class-relevant logits to

2025

SEMPO: Lightweight Foundation Models for Time Series Forecasting

NeurIPS 2025poster

The recent boom of large pre-trained models witnesses remarkable success in developing foundation models (FMs) for time series forecasting. Despite impressive performance across diverse downstream forecasting tasks, existing time series FMs possess massive network architectures and require substanti…

Cited by 0SourcecodeScholar
2025

Wills Aligner: Multi-Subject Collaborative Brain Visual Decoding

AAAI 2025technical

Decoding visual information from human brain activity has seen remarkable advancements in recent research. However, the diversity in cortical parcellation and fMRI patterns across individuals has prompted the development of deep learning models tailored to each subject. The personalization limits th…

Cited by 0SourcePDFScholar
2024

Decoupled Invariant Attention Network for Multivariate Time-series Forecasting

IJCAI 2024poster

To achieve more accurate prediction results in Time Series Forecasting (TSF), it is essential to distinguish between the valuable patterns (invariant patterns) of the spatial-temporal relationship and the patterns that are prone to generate distribution shift (variant patterns), then combine them fo…

2024

Deep Frequency Derivative Learning for Non-stationary Time Series Forecasting

IJCAI 2024poster

While most time series are non-stationary, it is inevitable for models to face the distribution shift issue in time series forecasting. Existing solutions manipulate statistical measures (usually mean and std.) to adjust time series distribution. However, these operations can be theoretically seen a…

Cited by 11SourcePDFScholar
2024

FilterNet: Harnessing Frequency Filters for Time Series Forecasting

NeurIPS 2024poster

Given the ubiquitous presence of time series data across various domains, precise forecasting of time series holds significant importance and finds widespread real-world applications such as energy, weather, healthcare, etc. While numerous forecasters have been proposed using different network archi…

2024

Frequency Spectrum Is More Effective for Multimodal Representation and Fusion: A Multimodal Spectrum Rumor Detector

AAAI 2024technical

Multimodal content, such as mixing text with images, presents significant challenges to rumor detection in social media. Existing multimodal rumor detection has focused on mixing tokens among spatial and sequential locations for unimodal representation or fusing clues of rumor veracity across modali…

2024

HyDiscGAN: A Hybrid Distributed cGAN for Audio-Visual Privacy Preservation in Multimodal Sentiment Analysis

IJCAI 2024poster

Multimodal Sentiment Analysis (MSA) aims to identify speakers' sentiment tendencies in multimodal video content, raising serious concerns about privacy risks associated with multimodal data, such as voiceprints and facial images. Recent distributed collaborative learning has been verified as an effe…

Cited by 6SourcePDFScholar
2024

MLIP: Efficient Multi-Perspective Language-Image Pretraining with Exhaustive Data Utilization

ICML 2024poster

Contrastive Language-Image Pretraining (CLIP) has achieved remarkable success, leading to rapid advancements in multimodal studies. However, CLIP faces a notable challenge in terms of *inefficient data utilization*. It relies on a single contrastive supervision for each image-text pair during repres…

Cited by 3SourcePDFScholar
2024

ViT-Lens: Towards Omni-modal Representations

CVPR 2024poster

Aiming to advance AI agents large foundation models significantly improve reasoning and instruction execution yet the current focus on vision and language neglects the potential of perceiving diverse modalities in open-world environments. However the success of data-driven vision and language models…

2023

FourierGNN: Rethinking Multivariate Time Series Forecasting from a Pure Graph Perspective

NeurIPS 2023poster

Multivariate time series (MTS) forecasting has shown great importance in numerous industries. Current state-of-the-art graph neural network (GNN)-based forecasting methods usually require both graph networks (e.g., GCN) and temporal networks (e.g., LSTM) to capture inter-series (spatial) dynamics an…

2023

Frequency-domain MLPs are More Effective Learners in Time Series Forecasting

NeurIPS 2023poster

Time series forecasting has played the key role in different industrial, including finance, traffic, energy, and healthcare domains. While existing literatures have designed many sophisticated architectures based on RNNs, GNNs, or Transformers, another kind of approaches based on multi-layer percept…

2023

Masked Image Modeling with Denoising Contrast

ICLR 2023poster

Since the development of self-supervised visual representation learning from contrastive learning to masked image modeling (MIM), there is no significant difference in essence, that is, how to design proper pretext tasks for vision dictionary look-up. MIM recently dominates this line of research wit…

2023

RILS: Masked Visual Reconstruction in Language Semantic Space

CVPR 2023poster

Both masked image modeling (MIM) and natural language supervision have facilitated the progress of transferable visual pre-training. In this work, we seek the synergy between two paradigms and study the emerging properties when MIM meets natural language supervision. To this end, we present a novel…

2022

CATN: Cross Attentive Tree-Aware Network for Multivariate Time Series Forecasting

AAAI 2022technical

Modeling complex hierarchical and grouped feature interaction in the multivariate time series data is indispensable to comprehend the data dynamics and predicting the future condition. The implicit feature interaction and high-dimensional data make multivariate forecasting very challenging. Many exi…

Cited by 42SourcePDFScholar
2022

Mc-BEiT: Multi-Choice Discretization for Image BERT Pre-training

ECCV 2022poster

"Image BERT pre-training with masked image modeling (MIM) becomes a popular practice to cope with self-supervised representation learning. A seminal work, BEiT, casts MIM as a classification task with a visual vocabulary, tokenizing the continuous visual signals into discrete vision tokens using a p…