no code implementations • 5 Aug 2023 • Rabimba Karanjai, Edward Li, Lei Xu, Weidong Shi
The main objective of this study is to assess the quality of generated code provided by LLMs for smart contracts.
no code implementations • 28 Jun 2023 • Wenjing Huang, Shikui Tu, Lei Xu
Diffusion models have showcased their remarkable capability to synthesize diverse and high-quality images, sparking interest in their application for real image editing.
no code implementations • 21 May 2023 • Lei Xu, Lei Chen, Rong Wang, Feiping Nie, Xuelong Li
The Dirichlet Energy identifies important features by measuring their smoothness on the graph structure, and facilitates the learning of a new graph that reflects the inherent structure in the new feature subspace during the training process using selected features.
no code implementations • 17 May 2023 • Yunzhe Zhang, Yao Lu, Lei Xu, Kunlin Yang, Hui Tang, Shuyuan Ye, Qi Xuan
This paper investigates the differences in data organization between contrastive and supervised learning methods, focusing on the concept of locally dense clusters.
1 code implementation • 30 Nov 2022 • Sicong Zang, Shikui Tu, Lei Xu
The cropped sketch patches are linked according to their global semantics or local geometric shapes, namely the synonymous proximity, by computing the cosine similarity between the captured patch embeddings.
no code implementations • 20 Sep 2022 • Jiaqi Xue, Lei Xu, Lin Chen, Weidong Shi, Kaidi Xu, Qian Lou
(ii) How to design a robust PNet given the encrypted input without decryption?
1 code implementation • Findings (NAACL) 2022 • Lei Xu, Yangyi Chen, Ganqu Cui, Hongcheng Gao, Zhiyuan Liu
Prompt-based learning paradigm bridges the gap between pre-training and fine-tuning, and works effectively under the few-shot setting.
no code implementations • 5 Apr 2022 • Qianru Zhou, Rongzhen Li, Lei Xu, Arumugam Nallanathan, Jian Yang, Anmin Fu
With the ever increasing of new intrusions, intrusion detection task rely on Artificial Intelligence more and more.
1 code implementation • 24 Mar 2022 • Wenjing Huang, Shikui Tu, Lei Xu
To strike a balance between the reconstruction capacity and the control flexibility, the encoder is designed as a multi-head structure to yield embeddings for reconstruction and control, respectively: a high-dimensional tensor with spatial properties for consistent reconstruction and four low-dimensional facial component embeddings for semantic face editing.
no code implementations • 20 Mar 2022 • Lei Xu, Tianyu Ren, Georgia Chalvatzaki, Jan Peters
Task and Motion Planning (TAMP) provides a hierarchical framework to handle the sequential nature of manipulation tasks by interleaving a symbolic task planner that generates a possible action sequence, with a motion planner that checks the kinematic feasibility in the geometric world, generating robot trajectories if several constraints are satisfied, e. g., a collision-free trajectory from one state to another.
no code implementations • 14 Mar 2022 • Yi Liu, Lei Xu, Xingliang Yuan, Cong Wang, Bo Li
Existing machine unlearning techniques focus on centralized training, where access to all holders' training data is a must for the server to conduct the unlearning process.
no code implementations • 9 Mar 2022 • Xiaodan Xing, Javier Del Ser, Yinzhe Wu, Yang Li, Jun Xia, Lei Xu, David Firmin, Peter Gatehouse, Guang Yang
A core part of digital healthcare twins is model-based data synthesis, which permits the generation of realistic medical signals without requiring to cope with the modelling complexity of anatomical and biochemical phenomena producing them in reality.
no code implementations • 2 Mar 2022 • Junyu Lin, Xiaofeng Mao, Yuefeng Chen, Lei Xu, Yuan He, Hui Xue
DETR is the first fully end-to-end detector that predicts a final set of predictions without post-processing.
no code implementations • IEEE International Conference on Bioinformatics and Biomedicine 2022 • Lei Xu, Jianhong Cheng, Jin Liu, Hulin Kuang, Fan Wu, Jianxin Wang
The two types of features are entered into the parallel encoders paths with residual attention for extracting feature representation, and then fused into a channel-spatial attention module to adaptively focus on the important features between channel and spatial part for the classification task.
Ranked #5 on
Audio Classification
on ICBHI Respiratory Sound Database
(using extra training data)
no code implementations • 29 Sep 2021 • Junyu Lin, Xiaofeng Mao, Yuefeng Chen, Lei Xu, Yuan He, Hui Xue'
DETR is the first fully end-to-end detector that predicts a final set of predictions without post-processing.
no code implementations • 3 Aug 2021 • Peiying Li, Shikui Tu, Lei Xu
Current face recognition tasks are usually carried out on high-quality face images, but in reality, most face images are captured under unconstrained or poor conditions, e. g., by video surveillance.
1 code implementation • 15 Jul 2021 • Ye Yuan, Jun Liu, Dou Jin, Zuogong Yue, Ruijuan Chen, Maolin Wang, Chuan Sun, Lei Xu, Feng Hua, Xin He, Xinlei Yi, Tao Yang, Hai-Tao Zhang, Shaochun Sui, Han Ding
Although there has been a joint effort in tackling such a critical issue by proposing privacy-preserving machine learning frameworks, such as federated learning, most state-of-the-art frameworks are built still in a centralized way, in which a central client is needed for collecting and distributing model information (instead of data itself) from every other client, leading to high communication pressure and high vulnerability when there exists a failure at or attack on the central client.
1 code implementation • 25 Jun 2021 • Hsuan-Tung Peng, Joshua Lederman, Lei Xu, Thomas Ferreira de Lima, Chaoran Huang, Bhavin Shastri, David Rosenbluth, Paul Prucnal
In addition, compact and integratable hardware platforms which can implement ML models at the chip scale will find much broader application to wireless communication networks.
no code implementations • AAAI 2021 • Kaixuan Zhao, Shikui Tu, Lei Xu
Existing deep learning methods for graph matching(GM) problems usually considered affinity learningto assist combinatorial optimization in a feedforward pipeline, and parameter learning is executed by back-propagating the gradients of the matching loss.
Ranked #14 on
Graph Matching
on PASCAL VOC
(matching accuracy metric)
no code implementations • 25 Apr 2021 • Xiang Chen, Yufeng Huang, Lei Xu
Rain streaks bring serious blurring and visual quality degradation, which often vary in size, direction and density.
1 code implementation • 17 Apr 2021 • Lei Xu, Alfredo Cuesta-Infante, Laure Berti-Equille, Kalyan Veeramachaneni
It improves the quality of adversarial examples by optimizing a critique score which combines the fluency, similarity, and misclassification metrics.
no code implementations • 14 Jan 2021 • Mudabbir Kaleem, Keshav Kasichainula, Rabimba Karanjai, Lei Xu, Zhimin Gao, Lin Chen, Weidong Shi
This paper presents EDSC, a novel smart contract platform design based on the event-driven execution model as opposed to the traditionally employed transaction-driven execution model.
Distributed, Parallel, and Cluster Computing
no code implementations • 19 Dec 2020 • Ze Zheng, Andrei Komar, Khosro Zangeneh Kamali, John Noble, Lachlan Whichello, Andrey E. Miroshnichenko, Mohsen Rahmani, Dragomir N. Neshev, Lei Xu
Optically resonant dielectric metasurfaces offer unique capability to fully control the wavefront, polarisation, intensity or spectral content of light based on the excitation and interference of different electric and magnetic Mie multipolar resonances.
Optics
no code implementations • 22 Oct 2020 • Lei Xu, Ivan Ramirez, Kalyan Veeramachaneni
Most adversarial attack methods that are designed to deceive a text classifier change the text classifier's prediction by modifying a few words or characters.
no code implementations • 21 Oct 2020 • Shubhra Kanti Karmaker Santu, Md. Mahadi Hassan, Micah J. Smith, Lei Xu, ChengXiang Zhai, Kalyan Veeramachaneni
AutoML tools aim to make machine learning accessible for non-machine learning experts (domain experts), to improve the efficiency of machine learning, and to accelerate machine learning research.
no code implementations • 30 Jul 2020 • Junyu Lin, Lei Xu, Yingqi Liu, Xiangyu Zhang
The technique does not require any knowledge of the structure or weights of the target DNN.
no code implementations • 14 May 2020 • Zhihao Xing, Shikui Tu, Lei Xu
We present a self-learning approach that combines deep reinforcement learning and Monte Carlo tree search to solve the traveling salesman problem.
no code implementations • 8 Apr 2020 • Lei Xu, Jenni Raitoharju, Alexandros Iosifidis, Moncef Gabbouj
The proposed method is based on a probabilistic model for defining the weights of individual samples in a weighted multi-label LDA approach.
no code implementations • 2 Feb 2020 • Guang Yang, Jun Chen, Zhifan Gao, Shuo Li, Hao Ni, Elsa Angelini, Tom Wong, Raad Mohiaddin, Eva Nyktari, Ricardo Wage, Lei Xu, Yanping Zhang, Xiuquan Du, Heye Zhang, David Firmin, Jennifer Keegan
Using our MVTT recursive attention model, both the LA anatomy and scar can be segmented accurately (mean Dice score of 93% for the LA anatomy and 87% for the scar segmentations) and efficiently (~0. 27 seconds to simultaneously segment the LA anatomy and scars directly from the 3D LGE CMR dataset with 60-68 2D slices).
no code implementations • 25 Sep 2019 • Wenjing Huang, Shikui Tu, Lei Xu
In the inference time, when given an input, we will start a search process in the latent space which aims to find the closest reconstruction to the given image on the distribution of normal data.
2 code implementations • 3 Sep 2019 • Kevin Alex Zhang, Lei Xu, Alfredo Cuesta-Infante, Kalyan Veeramachaneni
The goal of video watermarking is to embed a message within a video file in a way such that it minimally impacts the viewing experience but can be recovered even if the video is redistributed and modified, allowing media producers to assert ownership over their content.
no code implementations • 7 Aug 2019 • Kai Chen, Zhongrui Lin, Jian Wan, Lei Xu, Chungen Xu
To address this, this paper proposes secure and efficient multi-keyword ranked search over encrypted cloud data for multi-owner model based on searching adversarial networks.
9 code implementations • NeurIPS 2019 • Lei Xu, Maria Skoularidou, Alfredo Cuesta-Infante, Kalyan Veeramachaneni
Tabular data usually contains a mix of discrete and continuous columns.
no code implementations • 28 Jun 2019 • Lei Xu, Shubhra Kanti Karmaker Santu, Kalyan Veeramachaneni
In this paper, we tackle the challenge of defining useful prediction problems on event-driven time-series data.
no code implementations • 12 Apr 2019 • Wenjing Huang, Shikui Tu, Lei Xu
Proposed in 1991, Least Mean Square Error Reconstruction for self-organizing network, shortly Lmser, was a further development of the traditional auto-encoder (AE) by folding the architecture with respect to the central coding layer and thus leading to the features of symmetric weights and neurons, as well as jointly supervised and unsupervised learning.
5 code implementations • 12 Jan 2019 • Kevin Alex Zhang, Alfredo Cuesta-Infante, Lei Xu, Kalyan Veeramachaneni
Image steganography is a procedure for hiding messages inside pictures.
no code implementations • 7 Jan 2019 • Xiaojie Gao, Shikui Tu, Lei Xu
By uniting the advantages in A* search algorithm with Monte Carlo tree search, we come up with a new algorithm named A* tree search in which best information is returned to guide next search.
7 code implementations • 27 Nov 2018 • Lei Xu, Kalyan Veeramachaneni
Generative adversarial networks (GANs) implicitly learn the probability distribution of a dataset and can draw samples from the distribution.
no code implementations • 21 Nov 2018 • Minchao Li, Shikui Tu, Lei Xu
Neural style transfer has been demonstrated to be powerful in creating artistic image with help of Convolutional Neural Networks (CNN).
no code implementations • 7 Nov 2018 • Lin Chen, Lei Xu, Shouhuai Xu, Zhimin Gao, Weidong Shi
In this paper, we introduce a novel variant of the bribery problem, "Election with Bribed Voter Uncertainty" or BVU for short, accommodating the uncertainty that the vote of a bribed voter may or may not be counted.
no code implementations • 19 May 2018 • Yansong Gao, Yang Su, Lei Xu, Damith C. Ranasinghe
A Physical unclonable functions (PUF), alike a fingerprint, exploits manufacturing randomness to endow each physical item with a unique identifier.
Cryptography and Security
no code implementations • 19 Feb 2018 • Lei Xu, Alexandros Iosifidis, Moncef Gabbouj
In this paper, we propose a new variant of Linear Discriminant Analysis to overcome underlying drawbacks of traditional LDA and other LDA variants targeting problems involving imbalanced classes.
no code implementations • 13 Sep 2017 • Yajing Chen, Shikui Tu, Yuqi Yi, Lei Xu
Moreover, the combination of CNN encoder and removal of KL-divergence, i. e., the sketch-pix2seq model, had better performance in learning and generating sketches of multiple categories and showed promising results in creativity tasks.
no code implementations • 10 Jun 2017 • Chenchu Xu, Lei Xu, Zhifan Gao, Shen zhao, Heye Zhang, Yanping Zhang, Xiuquan Du, Shu Zhao, Dhanjoo Ghista, Shuo Li
Accurate detection of the myocardial infarction (MI) area is crucial for early diagnosis planning and follow-up management.
3 code implementations • ICML 2017 • Brandon Amos, Lei Xu, J. Zico Kolter
We show that many existing neural network architectures can be made input-convex with a minor modification, and develop specialized optimization algorithms tailored to this setting.
no code implementations • 20 Aug 2016 • Lei Xu, ZiYun Wang, Ayana, Zhiyuan Liu, Maosong Sun
Neural models have recently been used in text summarization including headline generation.
no code implementations • 27 Mar 2013 • Lei Xu, Judea Pearl
This paper considers the problem of invoking auxiliary, unobservable variables to facilitate the structuring of causal tree models for a given set of continuous variables.