Search Results for author: J. Morris Chang

Found 18 papers, 5 papers with code

Epi-Curriculum: Episodic Curriculum Learning for Low-Resource Domain Adaptation in Neural Machine Translation

no code implementations6 Sep 2023 Keyu Chen, Di Zhuang, Mingchen Li, J. Morris Chang

Experiments on English-German and English-Romanian translation show that: (i) Epi-Curriculum improves both model's robustness and adaptability in seen and unseen domains; (ii) Our episodic training framework enhances the encoder and decoder's robustness to domain shift.

Domain Adaptation Machine Translation +2

Towards Implementing Energy-aware Data-driven Intelligence for Smart Health Applications on Mobile Platforms

no code implementations1 Feb 2023 G. Dumindu Samaraweera, Hung Nguyen, Hadi Zanddizari, Behnam Zeinali, J. Morris Chang

Recent breakthrough technological progressions of powerful mobile computing resources such as low-cost mobile GPUs along with cutting-edge, open-source software architectures have enabled high-performance deep learning on mobile platforms.

MC-GEN:Multi-level Clustering for Private Synthetic Data Generation

1 code implementation28 May 2022 Mingchen Li, Di Zhuang, J. Morris Chang

MC-GEN applies multi-level clustering and differential private generative model to improve the utility of synthetic data.

BIG-bench Machine Learning Clustering +2

SuperCon: Supervised Contrastive Learning for Imbalanced Skin Lesion Classification

no code implementations11 Feb 2022 Keyu Chen, Di Zhuang, J. Morris Chang

The results show that our two-stage training strategy effectively addresses the class imbalance classification problem, and significantly improves existing works in terms of F1-score and AUC score, resulting in state-of-the-art performance.

Classification Contrastive Learning +2

Locally Differentially Private Distributed Deep Learning via Knowledge Distillation

1 code implementation7 Feb 2022 Di Zhuang, Mingchen Li, J. Morris Chang

As such, it motivates the researchers to conduct distributed deep learning, where the data user would like to build DL models using the data segregated across multiple different data owners.

Knowledge Distillation Privacy Preserving

COVID-19 Pneumonia Severity Prediction using Hybrid Convolution-Attention Neural Architectures

no code implementations6 Jul 2021 Nam Nguyen, J. Morris Chang

This study proposed a novel framework for COVID-19 severity prediction, which is a combination of data-centric and model-centric approaches.

severity prediction

A compressive multi-kernel method for privacy-preserving machine learning

no code implementations20 Jun 2021 Thee Chanyaswad, J. Morris Chang, S. Y. Kung

Compressive Privacy is a privacy framework that employs utility-preserving lossy-encoding scheme to protect the privacy of the data, while multi-kernel method is a kernel based machine learning regime that explores the idea of using multiple kernels for building better predictors.

Activity Recognition BIG-bench Machine Learning +2

Contrastive Self-supervised Neural Architecture Search

1 code implementation21 Feb 2021 Nam Nguyen, J. Morris Chang

This paper proposes a novel cell-based neural architecture search algorithm (NAS), which completely alleviates the expensive costs of data labeling inherited from supervised learning.

Neural Architecture Search Self-Supervised Learning

Generating Black-Box Adversarial Examples in Sparse Domain

no code implementations22 Jan 2021 Hadi Zanddizari, Behnam Zeinali, J. Morris Chang

In this paper, we propose a novel approach to generate a black-box attack in sparse domain whereas the most important information of an image can be observed.

Adversarial Attack object-detection +1

Discriminative Adversarial Domain Generalization with Meta-learning based Cross-domain Validation

3 code implementations1 Nov 2020 Keyu Chen, Di Zhuang, J. Morris Chang

The generalization capability of machine learning models, which refers to generalizing the knowledge for an "unseen" domain via learning from one or multiple seen domain(s), is of great importance to develop and deploy machine learning applications in the real-world conditions.

BIG-bench Machine Learning Domain Generalization +1

Utility-aware Privacy-preserving Data Releasing

no code implementations9 May 2020 Di Zhuang, J. Morris Chang

Later, our approach leverages the learned knowledge to precisely perturb the data owners' data into privatized data that can be successfully utilized for certain intended purpose (learning to succeed), without jeopardizing certain predefined privacy (training to fail).

Human Activity Recognition Marketing +1

CS-AF: A Cost-sensitive Multi-classifier Active Fusion Framework for Skin Lesion Classification

no code implementations25 Apr 2020 Di Zhuang, Keyu Chen, J. Morris Chang

Since the skin lesion datasets are usually limited and statistically biased, while designing an effective fusion approach, it is important to consider not only the performance of each classifier on the training/validation dataset, but also the relative discriminative power (e. g., confidence) of each classifier regarding an individual sample in the testing phase, which calls for an active fusion approach.

General Classification Lesion Classification +1

SAIA: Split Artificial Intelligence Architecture for Mobile Healthcare System

no code implementations25 Apr 2020 Di Zhuang, Nam Nguyen, Keyu Chen, J. Morris Chang

Hence, most of the mobile healthcare systems leverage the cloud computing infrastructure, where the data collected by the mobile and IoT devices would be transmitted to the cloud computing platforms for analysis.

Cloud Computing

Privacy-Preserving Image Classification in the Local Setting

no code implementations9 Feb 2020 Sen Wang, J. Morris Chang

To protect the image privacy, we propose to locally perturb the image representation before revealing to the data user.

BIG-bench Machine Learning Classification +3

Privacy-Preserving Boosting in the Local Setting

no code implementations6 Feb 2020 Sen Wang, J. Morris Chang

The privacy concern raises when such data leaves the hand of the owners and be further explored or mined.

BIG-bench Machine Learning Privacy Preserving

Locally Differentially Private Naive Bayes Classification

no code implementations3 May 2019 Emre Yilmaz, Mohammad Al-Rubaie, J. Morris Chang

In order to train a Naive Bayes classifier in an untrusted setting, we propose to use methods satisfying local differential privacy.

Classification Dimensionality Reduction +1

Privacy Preserving Machine Learning: Threats and Solutions

no code implementations27 Mar 2018 Mohammad Al-Rubaie, J. Morris Chang

For privacy concerns to be addressed adequately in current machine learning systems, the knowledge gap between the machine learning and privacy communities must be bridged.

BIG-bench Machine Learning Privacy Preserving

DynaMo: Dynamic Community Detection by Incrementally Maximizing Modularity

1 code implementation25 Sep 2017 Di Zhuang, J. Morris Chang, Mingchen Li

Community detection is of great importance for online social network analysis.

Social and Information Networks Cryptography and Security

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