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Zequn Zhang

13 accepted papers

2025

Face Relighting with Ratio Function for Explicit Geometric Representation

ICASSP 2025accepted

This paper addresses the problem of face relighting under varying illumination conditions. Lighting is a fundamental element in portrait photography that shapes the mood, geometry, and overall realism of the captured characters. Most previous studies have mainly treated relighting as a 2D generation…

Cited by 0SourceScholar
2025

HyperMixer: Specializable Hypergraph Channel Mixing for Long-term Multivariate Time Series Forecasting

AAAI 2025technical

Long-term Multivariate Time Series (LMTS) forecasting aims to predict extended future trends based on channel-interrelated historical data. Considering the elusive channel correlations, most existing methods compromise by treating channels as independent or tentatively modeling pairwise channel int…

Cited by 0SourcePDFScholar
2025

RLLTE: Long-Term Evolution Project of Reinforcement Learning

AAAI 2025technical

We present RLLTE: a long-term evolution, extremely modular, and open-source framework for reinforcement learning (RL) research and application. Beyond delivering top-notch algorithm implementations, RLLTE also serves as a toolkit for developing algorithms. More specifically, RLLTE decouples the RL a…

2024

Graph-based Unsupervised Disentangled Representation Learning via Multimodal Large Language Models

NeurIPS 2024poster

Disentangled representation learning (DRL) aims to identify and decompose underlying factors behind observations, thus facilitating data perception and generation. However, current DRL approaches often rely on the unrealistic assumption that semantic factors are statistically independent. In reality…

Cited by 2SourcePDFScholar
2024

Scene Graph Disentanglement and Composition for Generalizable Complex Image Generation

NeurIPS 2024spotlight

There has been exciting progress in generating images from natural language or layout conditions. However, these methods struggle to faithfully reproduce complex scenes due to the insufficient modeling of multiple objects and their relationships. To address this issue, we leverage the scene graph, a…

Cited by 2SourcePDFScholar
2023

Event Causality Extraction via Implicit Cause-Effect Interactions

EMNLP 2023long main

Event Causality Extraction (ECE) aims to extract the cause-effect event pairs from the given text, which requires the model to possess a strong reasoning ability to capture event causalities. However, existing works have not adequately exploited the interactions between the cause and effect event th…

Cited by 0SourceScholar
2023

Guide the Many-to-One Assignment: Open Information Extraction via IoU-aware Optimal Transport

ACL 2023long

Open Information Extraction (OIE) seeks to extract structured information from raw text without the limitations of close ontology. Recently, the detection-based OIE methods have received great attention from the community due to their parallelism. However, as the essential step of those models, how…

Cited by 14SourcePDFScholar
2023

Narrative Order Aware Story Generation via Bidirectional Pretraining Model with Optimal Transport Reward

EMNLP 2023long findings

To create a captivating story, a writer often plans a sequence of logically coherent events and ingeniously manipulates the narrative order to generate flashback in place. However, existing storytelling systems suffer from both insufficient understanding of event correlations and inadequate awarenes…

Cited by 0SourceScholar
2023

NaviNeRF: NeRF-based 3D Representation Disentanglement by Latent Semantic Navigation

ICCV 2023poster

3D representation disentanglement aims to identify, decompose, and manipulate the underlying explanatory factors of 3D data, which helps AI fundamentally understand our 3D world. This task is currently under-explored and poses great challenges: (i) the 3D representations are complex and in general c…

Cited by 11PDFcodeScholar
2023

TOT:Topology-Aware Optimal Transport for Multimodal Hate Detection

AAAI 2023technical

Multimodal hate detection, which aims to identify the harmful content online such as memes, is crucial for building a wholesome internet environment. Previous work has made enlightening exploration in detecting explicit hate remarks. However, most of their approaches neglect the analysis of implicit…

Cited by 14SourcePDFScholar
2022

A Span-level Bidirectional Network for Aspect Sentiment Triplet Extraction

EMNLP 2022main

Aspect Sentiment Triplet Extraction (ASTE) is a new fine-grained sentiment analysis task that aims to extract triplets of aspect terms, sentiments, and opinion terms from review sentences. Recently, span-level models achieve gratifying results on ASTE task by taking advantage of the predictions of a…

2022

PolygonE: Modeling N-ary Relational Data as Gyro-Polygons in Hyperbolic Space

AAAI 2022technical

N-ary relational knowledge base (KBs) embedding aims to map binary and beyond-binary facts into low-dimensional vector space simultaneously. Existing approaches typically decompose n-ary relational facts into subtuples (entity pairs, triples or quintuples, etc.), and they generally model n-ary relat…

Cited by 6SourcePDFScholar
2021

Trigger is Not Sufficient: Exploiting Frame-aware Knowledge for Implicit Event Argument Extraction

ACL 2021long

Implicit Event Argument Extraction seeks to identify arguments that play direct or implicit roles in a given event. However, most prior works focus on capturing direct relations between arguments and the event trigger. The lack of reasoning ability brings many challenges to the extraction of implici…

Cited by 76SourcePDFScholar