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Xia Li

39 accepted papers

2026

Learning to Evolve: Multi-modal Interactive Fields for Robust Humanoid Navigation in Dynamic Environments

RSS 2026poster

Achieving safe manipulation-oriented navigation for humanoid robots is fundamentally challenged by two factors: locomotion-induced perceptual distortion (causing semantic-geometry distortion) and changes within the environment (causing map-reality mismatches). Existing static scene graphs often fail…

Cited by 0SourceScholar
2026

LoD-Loc v3: Generalized Aerial Localization in Dense Cities using Instance Silhouette Alignment

CVPR 2026

We present LoD-Loc v3, a novel method for generalized aerial visual localization in dense urban environments. While prior work LoD-Loc v2 achieves localization through semantic building silhouette alignment with low-detail city models, it suffers from two key limitations: poor cross-scene generaliza

Cited by 0SourcecodeScholar
2025

CEAES: Bidirectional Reinforcement Learning Optimization for Consistent and Explainable Essay Assessment

ACL 2025long

Most current automated essay quality assessment systems treat score prediction and feedback generation as separate tasks, overlooking the fact that scores provide a quantitative evaluation of quality, while feedback offers a qualitative assessment. Both aspects reflect essay quality from different p…

2025

Can Machines Understand Composition? Dataset and Benchmark for Photographic Image Composition Embedding and Understanding

CVPR 2025highlight

With the rapid growth of social media and digital photography, visually appealing images have become essential for effective communication and emotional engagement. Among the factors influencing aesthetic appeal, composition--the arrangement of visual elements within a frame--plays a crucial role. I…

Cited by 0SourcePDFScholar
2025

KAES: Multi-aspect Shared Knowledge Finding and Aligning for Cross-prompt Automated Scoring of Essay Traits

AAAI 2025technical

Cross-prompt automated essay scoring (AES) aims to train models using essays from different source prompts and test them on new target prompt essays. A core challenge of the task is to learn as much shared knowledge as possible between essays from different prompts in order to better represent new p…

2025

One-shot Federated Learning Methods: A Practical Guide

IJCAI 2025

One-shot Federated Learning (OFL) is a distributed machine learning paradigm that constrains client-server communication to a single round, addressing privacy and communication overhead issues associated with multiple rounds of data exchange in traditional Federated Learning (FL). OFL demonstrates t

Cited by 0SourcePDFScholar
2025

Paraphrase Makes Perfect: Leveraging Expression Paraphrase to Improve Implicit Sentiment Learning

COLING 2025main

Existing implicit sentiment learning methods mainly focus on capturing implicit sentiment knowledge individually, without paying more attention to the potential connection between implicit and explicit sentiment. From a linguistic perspective, implicit and explicit sentiment expressions are essentia…

2024

A Unified Environmental Network for Pedestrian Trajectory Prediction

AAAI 2024technical

Accurately predicting pedestrian movements in complex environments is challenging due to social interactions, scene constraints, and pedestrians' multimodal behaviors. Sequential models like long short-term memory fail to effectively integrate scene features to make predicted trajectories comply wit…

Cited by 3SourcePDFScholar
2024

FedLPA: One-shot Federated Learning with Layer-Wise Posterior Aggregation

NeurIPS 2024poster

Efficiently aggregating trained neural networks from local clients into a global model on a server is a widely researched topic in federated learning. Recently, motivated by diminishing privacy concerns, mitigating potential attacks, and reducing communication overhead, one-shot federated learning (…

2024

PLAES: Prompt-generalized and Level-aware Learning Framework for Cross-prompt Automated Essay Scoring

COLING 2024main

Current cross-prompt automatic essay scoring (AES) systems are primarily concerned with obtaining shared knowledge specific to the target prompt by using the source and target prompt essays. However, it may not be feasible in practical situations because the target prompt essays may not be available…

Cited by 8SourcePDFScholar
2024

SGFormer: Semantic Graph Transformer for Point Cloud-Based 3D Scene Graph Generation

AAAI 2024technical

In this paper, we propose a novel model called SGFormer, Semantic Graph TransFormer for point cloud-based 3D scene graph generation. The task aims to parse a point cloud-based scene into a semantic structural graph, with the core challenge of modeling the complex global structure. Existing methods b…

2024

VG4D: Vision-Language Model Goes 4D Video Recognition

ICRA 2024poster

Understanding the real world through point cloud video is a crucial aspect of robotics and autonomous driving systems. However, prevailing methods for 4D point cloud recognition have limitations due to sensor resolution, which leads to a lack of detailed information. Recent advances have shown that…

Cited by 9SourcecodeScholar
2024

You Only Read Once: Constituency-Oriented Relational Graph Convolutional Network for Multi-Aspect Multi-Sentiment Classification

AAAI 2024technical

Most of the existing aspect-based sentiment analysis (ABSA) models only predict the sentiment polarity of a single aspect at a time, focusing primarily on enhancing the representation of this single aspect based on the other contexts or aspects. This one-to-one paradigm ignores the fact that multi-a…

2023

Betrayed by Captions: Joint Caption Grounding and Generation for Open Vocabulary Instance Segmentation

ICCV 2023poster

In this work, we focus on open vocabulary instance segmentation to expand a segmentation model to classify and segment instance-level novel categories. Previous approaches have relied on massive caption datasets and complex pipelines to establish one-to-one mappings between image regions and words i…

Cited by 36PDFcodeScholar
2023

Co-Evolution of Pose and Mesh for 3D Human Body Estimation from Video

ICCV 2023poster

Despite significant progress in single image-based 3D human mesh recovery, accurately and smoothly recovering 3D human motion from a video remains challenging. Existing video-based methods generally recover human mesh by estimating the complex pose and shape parameters from coupled image features, w…

Cited by 22PDFcodeScholar
2023

Explore In-Context Learning for 3D Point Cloud Understanding

NeurIPS 2023spotlight

With the rise of large-scale models trained on broad data, in-context learning has become a new learning paradigm that has demonstrated significant potential in natural language processing and computer vision tasks. Meanwhile, in-context learning is still largely unexplored in the 3D point cloud dom…

2023

Gator: Graph-Aware Transformer with Motion-Disentangled Regression for Human Mesh Recovery from a 2D Pose

ICASSP 2023accepted

3D human mesh recovery from a 2D pose plays an important role in various applications. However, it is hard for existing methods to simultaneously capture the multiple relations during the evolution from skeleton to mesh, including joint-joint, joint-vertex and vertex-vertex relations, which often le…

Cited by 0SourceScholar
2023

Image Sharing Chain Detection VIA Sequence-To-Sequence Model

ICASSP 2023accepted

Image sharing chain detection aims to recover the sharing history of an image downloaded from online social networks (OSNs), including the ever-shared OSNs and their orders, which is an important task in the multimedia forensics community. Most of the existing algorithms directly treat the sharing c…

Cited by 0SourceScholar
2023

Interweaved Graph and Attention Network for 3D Human Pose Estimation

ICASSP 2023accepted

Despite substantial progress in 3D human pose estimation from a single-view image, prior works rarely explore global and local correlations, leading to insufficient learning of human skeleton representations. To address this issue, we propose a novel Interweaved Graph and Attention Network (IGANet)…

Cited by 0SourceScholar
2023

PI-Trans: Parallel-Convmlp and Implicit-Transformation Based Gan for Cross-View Image Translation

ICASSP 2023accepted

For semantic-guided cross-view image translation, it is crucial to learn where to sample pixels from the source view image and where to reallocate them guided by the target view semantic map, especially when there is little overlap or drastic view difference between the source and target images. Hen…

Cited by 0SourceScholar
2023

Unsupervised Self-Driving Attention Prediction via Uncertainty Mining and Knowledge Embedding

ICCV 2023poster

Predicting attention regions of interest is an important yet challenging task for self-driving systems. Existing methodologies rely on large-scale labeled traffic datasets that are labor-intensive to obtain. Besides, the huge domain gap between natural scenes and traffic scenes in current datasets a…

Cited by 6PDFcodeScholar
2022

Mask Transfiner for High-Quality Instance Segmentation

CVPR 2022poster

Two-stage and query-based instance segmentation methods have achieved remarkable results. However, their segmented masks are still very coarse. In this paper, we present Mask Transfiner for high-quality and efficient instance segmentation. Instead of operating on regular dense tensors, our Mask Tran…

Cited by 154PDFcodeScholar
2021

Is Attention Better Than Matrix Decomposition?

ICLR 2021poster

As an essential ingredient of modern deep learning, attention mechanism, especially self-attention, plays a vital role in the global correlation discovery. However, is hand-crafted attention irreplaceable when modeling the global context? Our intriguing finding is that self-attention is not better t…

2021

PointFlow: Flowing Semantics Through Points for Aerial Image Segmentation

CVPR 2021poster

Aerial Image Segmentation is a particular semantic segmentation problem and has several challenging characteristics that general semantic segmentation does not have. There are two critical issues: The one is an extremely foreground-background imbalanced distribution and the other is multiple small o…

Cited by 133PDFcodeScholar
2021

Prototypical Cross-Attention Networks for Multiple Object Tracking and Segmentation

NeurIPS 2021spotlight

Multiple object tracking and segmentation requires detecting, tracking, and segmenting objects belonging to a set of given classes. Most approaches only exploit the temporal dimension to address the association problem, while relying on single frame predictions for the segmentation mask itself. We p…

2021

Quasi-Dense Similarity Learning for Multiple Object Tracking

CVPR 2021poster

Similarity learning has been recognized as a crucial step for object tracking. However, existing multiple object tracking methods only use sparse ground truth matching as the training objective, while ignoring the majority of the informative regions on the images. In this paper, we present Quasi-Den…

Cited by 492PDFcodeScholar
2021

Temporal Pyramid Network for Pedestrian Trajectory Prediction with Multi-Supervision

AAAI 2021technical

Predicting human motion behavior in a crowd is important for many applications, ranging from the natural navigation of autonomous vehicles to intelligent security systems of video surveillance. All the previous works model and predict the trajectory with a single resolution, which is relatively inef…

2020

Improving Semantic Segmentation via Decoupled Body and Edge Supervision

ECCV 2020poster

the global context, or refine objects detail along their boundaries by multi-scale feature fusion. In this paper, a new paradigm for semantic segmentation is proposed. Our insight is that appealing performance of semantic segmentation requires extit{explicitly} modeling the object extit{body} and ex…

2020

Spatial Pyramid Based Graph Reasoning for Semantic Segmentation

CVPR 2020poster

The convolution operation suffers from a limited receptive filed, while global modeling is fundamental to dense prediction tasks, such as semantic segmentation. In this paper, we apply graph convolution into the semantic segmentation task and propose an improved Laplacian. The graph reasoning is dir…

Cited by 227PDFScholar
2019

Expectation-Maximization Attention Networks for Semantic Segmentation

ICCV 2019oral

Self-attention mechanism has been widely used for various tasks. It is designed to compute the representation of each position by a weighted sum of the features at all positions. Thus, it can capture long-range relations for computer vision tasks. However, it is computationally consuming. Since the…

Cited by 783PDFScholar
2018

Recurrent Squeeze-and-Excitation Context Aggregation Net for Single Image Deraining

ECCV 2018poster

Rain streaks can severely degrade the visibility, which causes many current computer vision algorithms fail to work. So it is necessary to remove the rain from images. We propose a novel deep network architecture based on deep convolutional and recurrent neural networks for single image deraining. A…

Cited by 1039SourcePDFScholar
2016

Asymptotic perfect secrecy in distributed detection against a global eavesdropper

ICASSP 2016accepted

This paper examines the secrecy in distributed detection under threat of a global eavesdropper (Eve) which has access to all sensors decisions. To measure secrecy, we compare the detection performance at the fusion center (FC) and at Eve in terms of their respective Kullback-Leibler Divergence (KLD)…

Cited by 0SourceScholar