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Sen Liu

10 accepted papers

2026

HyperSign: Hierarchical Hypergraph-based Co-occurrence Modeling for Sign Language Recognition and Translation

AAAI 2026technical

Effectively capturing co-occurrence signals, such as hand shapes, facial expressions, and body postures, is critical for semantic understanding in sign language recognition (SLR) and translation (SLT). Although skeleton data offer greater efficiency and robustness than RGB inputs, existing methods t

Cited by 0SourcePDFScholar
2025

Are LLMs Rational Investors? A Study on the Financial Bias in LLMs

ACL 2025finding

Large language models (LLMs) excel in natural language generation but also exhibit biases, particularly in gender, race, and religion, which can be amplified with widespread use. However, research on biases in specific domains, such as finance, remains limited. To address this gap, we conducted a co…

2025

Enhancing Federated Knowledge Distillation in Heterogeneous and Non-IID Scenarios

ICASSP 2025accepted

Federated Learning (FL) allows multiple participants to train models together while keeping their data private. Some FL frameworks use Knowledge Distillation to address model heterogenity, but many struggle in non-IID and heterogeneous environments, making it hard for clients to learn from each othe…

Cited by 0SourceScholar
2025

FedCAda: Adaptive Client-Side Optimization for Accelerated and Stable Federated Learning

ICASSP 2025accepted

Federated learning (FL) enables collaborative model training across distributed clients while preserving data privacy. However, achieving both acceleration and stability, particularly on the client side, remains a challenge. In this paper, we introduce FedCAda, an adaptive algorithm that leverages a…

Cited by 0SourceScholar
2024

CI-STHPAN: Pre-trained Attention Network for Stock Selection with Channel-Independent Spatio-Temporal Hypergraph

AAAI 2024technical

Quantitative stock selection is one of the most challenging FinTech tasks due to the non-stationary dynamics and complex market dependencies. Existing studies rely on channel mixing methods, exacerbating the issue of distribution shift in financial time series. Additionally, complex model structures…

Cited by 17SourcePDFScholar
2024

R3-NL2GQL: A Model Coordination and Knowledge Graph Alignment Approach for NL2GQL

EMNLP 2024finding

While current tasks of converting natural language to SQL (NL2SQL) using Foundation Models have shown impressive achievements, adapting these approaches for converting natural language to Graph Query Language (NL2GQL) encounters hurdles due to the distinct nature of GQL compared to SQL, alongside th…

2024

StoryTTS: A Highly Expressive Text-to-Speech Dataset with Rich Textual Expressiveness Annotations

ICASSP 2024accepted

While acoustic expressiveness has long been studied in expressive text-to-speech (ETTS), the inherent expressiveness in text lacks sufficient attention, especially for ETTS of artistic works. In this paper, we introduce StoryTTS, a highly ETTS dataset that contains rich expressiveness both in acoust…

Cited by 0SourceScholar
2020

LIRA: Lifelong Image Restoration from Unknown Blended Distortions

ECCV 2020poster

Most existing image restoration networks are designed in a disposable way and catastrophically forget previously learned distortions when trained on a new distortion removal task. To alleviate this problem, we raise the novel lifelong image restoration problem for blended distortions. We first desig…

Cited by 20SourcePDFScholar
2020

Learning Disentangled Feature Representation for Hybrid-distorted Image Restoration

ECCV 2020poster

Hybrid-distorted image restoration (HD-IR) is dedicated to restore real distorted image that is degraded by multiple distortions. Existing HD-IR approaches usually ignore the inherent interference among hybrid distortions which compromises the restoration performance. To decompose such interference,…

Cited by 55SourcePDFScholar
2020

QOS-Aware Flow Control for Power-Efficient Data Center Networks with Deep Reinforcement Learning

ICASSP 2020accepted

Reducing the power consumption and maintaining the Flow Completion Time (FCT) for the Quality of Service (QoS) of applications in Data Center Networks (DCNs) are two major concerns for data center operators. However, existing works either fail in guaranteeing the QoS due to the neglect of the FCT co…

Cited by 0SourceScholar