Search Results for author: Jiajun Liu

Found 14 papers, 4 papers with code

Global Knowledge Calibration for Fast Open-Vocabulary Segmentation

no code implementations16 Mar 2023 Kunyang Han, Yong liu, Jun Hao Liew, Henghui Ding, Yunchao Wei, Jiajun Liu, Yitong Wang, Yansong Tang, Yujiu Yang, Jiashi Feng, Yao Zhao

Recent advancements in pre-trained vision-language models, such as CLIP, have enabled the segmentation of arbitrary concepts solely from textual inputs, a process commonly referred to as open-vocabulary semantic segmentation (OVS).

Knowledge Distillation Open Vocabulary Semantic Segmentation +3

Improved Feature Distillation via Projector Ensemble

1 code implementation27 Oct 2022 Yudong Chen, Sen Wang, Jiajun Liu, Xuwei Xu, Frank de Hoog, Zi Huang

Motivated by the positive effect of the projector in feature distillation, we propose an ensemble of projectors to further improve the quality of student features.

Knowledge Distillation Multi-Task Learning

InvisibiliTee: Angle-agnostic Cloaking from Person-Tracking Systems with a Tee

1 code implementation15 Aug 2022 Yaxian Li, Bingqing Zhang, Guoping Zhao, Mingyu Zhang, Jiajun Liu, Ziwei Wang, JiRong Wen

After a survey for person-tracking system-induced privacy concerns, we propose a black-box adversarial attack method on state-of-the-art human detection models called InvisibiliTee.

Adversarial Attack Human Detection

STAR-GNN: Spatial-Temporal Video Representation for Content-based Retrieval

no code implementations15 Aug 2022 Guoping Zhao, Bingqing Zhang, Mingyu Zhang, Yaxian Li, Jiajun Liu, Ji-Rong Wen

It models a video with a lattice feature graph in which the nodes represent regions of different granularity, with weighted edges that represent the spatial and temporal links.

Representation Learning Retrieval +1

A Real-time Edge-AI System for Reef Surveys

no code implementations1 Aug 2022 Yang Li, Jiajun Liu, Brano Kusy, Ross Marchant, Brendan Do, Torsten Merz, Joey Crosswell, Andy Steven, Lachlan Tychsen-Smith, David Ahmedt-Aristizabal, Jeremy Oorloff, Peyman Moghadam, Russ Babcock, Megha Malpani, Ard Oerlemans

Crown-of-Thorn Starfish (COTS) outbreaks are a major cause of coral loss on the Great Barrier Reef (GBR) and substantial surveillance and control programs are ongoing to manage COTS populations to ecologically sustainable levels.

object-detection Object Detection

Multimodal sensor data fusion for in-situ classification of animal behavior using accelerometry and GNSS data

1 code implementation24 Jun 2022 Reza Arablouei, Ziwei Wang, Greg J. Bishop-Hurley, Jiajun Liu

However, the multimodal animal behavior classification algorithm based on posterior probability fusion is preferable to the one based on feature concatenation as it delivers better classification accuracy, has less computational and memory complexity, is more robust to sensor data failure, and enjoys better modularity.

Classification

Instant Graph Neural Networks for Dynamic Graphs

no code implementations3 Jun 2022 Yanping Zheng, Hanzhi Wang, Zhewei Wei, Jiajun Liu, Sibo Wang

With the development of numerous GNN variants, recent years have witnessed groundbreaking results in improving the scalability of GNNs to work on static graphs with millions of nodes.

The CSIRO Crown-of-Thorn Starfish Detection Dataset

no code implementations29 Nov 2021 Jiajun Liu, Brano Kusy, Ross Marchant, Brendan Do, Torsten Merz, Joey Crosswell, Andy Steven, Nic Heaney, Karl Von Richter, Lachlan Tychsen-Smith, David Ahmedt-Aristizabal, Mohammad Ali Armin, Geoffrey Carlin, Russ Babcock, Peyman Moghadam, Daniel Smith, Tim Davis, Kemal El Moujahid, Martin Wicke, Megha Malpani

Crown-of-Thorn Starfish (COTS) outbreaks are a major cause of coral loss on the Great Barrier Reef (GBR) and substantial surveillance and control programs are underway in an attempt to manage COTS populations to ecologically sustainable levels.

BIG-bench Machine Learning Management

Unsupervised Adversarial Attacks on Deep Feature-based Retrieval with GAN

no code implementations12 Jul 2019 Guoping Zhao, Mingyu Zhang, Jiajun Liu, Ji-Rong Wen

Such tendency indicates that the model indeed learned how to toy with both image retrieval systems and human eyes.

Image Classification Image Retrieval +1

RUM: network Representation learning throUgh Multi-level structural information preservation

no code implementations8 Oct 2017 Yanlei Yu, Zhiwu Lu, Jiajun Liu, Guoping Zhao, Ji-Rong Wen, Kai Zheng

We propose a novel network representations learning model framework called RUM (network Representation learning throUgh Multi-level structural information preservation).

Representation Learning

Learning in High-Dimensional Multimedia Data: The State of the Art

no code implementations10 Jul 2017 Lianli Gao, Jingkuan Song, Xingyi Liu, Junming Shao, Jiajun Liu, Jie Shao

Given the high dimensionality and the high complexity of multimedia data, it is important to investigate new machine learning algorithms to facilitate multimedia data analysis.

BIG-bench Machine Learning Management +1

Temporal Embedding in Convolutional Neural Networks for Robust Learning of Abstract Snippets

no code implementations18 Feb 2015 Jiajun Liu, Kun Zhao, Brano Kusy, Ji-Rong Wen, Raja Jurdak

The prediction of periodical time-series remains challenging due to various types of data distortions and misalignments.

Time Series Analysis

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