activity
20232026
most citedRoad Extraction with Satellite Images and Partial Road Maps

35 citations · 58 across the 17 of their papers we have counts for

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Showing 2025Show all

8 papers · 1 filter

cs.CV2025

Language-Instructed Reasoning for Group Activity Detection via Multimodal Large Language Model

Jihua Peng, Qianxiong Xu, Yichen Liu +4

Group activity detection (GAD) aims to simultaneously identify group members and categorize their collective activities within video sequences. Existing deep learning-based methods…

cs.CV2025

SAMITE: Position Prompted SAM2 with Calibrated Memory for Visual Object Tracking

Qianxiong Xu, Lanyun Zhu, Chenxi Liu +4

Visual Object Tracking (VOT) is widely used in applications like autonomous driving to continuously track targets in videos. Existing methods can be roughly categorized into templa…

cs.CV2025

Unlocking the Power of SAM 2 for Few-Shot Segmentation

Qianxiong Xu, Lanyun Zhu, Xuanyi Liu +4

Few-Shot Segmentation (FSS) aims to learn class-agnostic segmentation on few classes to segment arbitrary classes, but at the risk of overfitting. To address this, some methods use…

cs.LG2025

SubGCache: Accelerating Graph-based RAG with Subgraph-level KV Cache

Qiuyu Zhu, Liang Zhang, Qianxiong Xu +2

Graph-based retrieval-augmented generation (RAG) enables large language models (LLMs) to incorporate structured knowledge via graph retrieval as contextual input, enhancing more ac…

cs.LG2025

Efficient Multivariate Time Series Forecasting via Calibrated Language Models with Privileged Knowledge Distillation

Chenxi Liu, Hao Miao, Qianxiong Xu +5

Multivariate time series forecasting (MTSF) endeavors to predict future observations given historical data, playing a crucial role in time series data management systems. With adva…

cs.LG2025

Towards Cross-Modality Modeling for Time Series Analytics: A Survey in the LLM Era

Chenxi Liu, Shaowen Zhou, Qianxiong Xu +4

The proliferation of edge devices has generated an unprecedented volume of time series data across different domains, motivating various well-customized methods. Recently, Large La…

cs.CV2025

POPEN: Preference-Based Optimization and Ensemble for LVLM-Based Reasoning Segmentation

Lanyun Zhu, Tianrun Chen, Qianxiong Xu +5

Existing LVLM-based reasoning segmentation methods often suffer from imprecise segmentation results and hallucinations in their text responses. This paper introduces POPEN, a novel…

cs.LG2025

HierPromptLM: A Pure PLM-based Framework for Representation Learning on Heterogeneous Text-rich Networks

Qiuyu Zhu, Liang Zhang, Qianxiong Xu +1

Representation learning on heterogeneous text-rich networks (HTRNs), which consist of multiple types of nodes and edges with each node associated with textual information, is essen…