Search Results for author: Toshiaki Koike-Akino

Found 45 papers, 3 papers with code

Quantum Diffusion Models for Few-Shot Learning

no code implementations6 Nov 2024 Ruhan Wang, Ye Wang, Jing Liu, Toshiaki Koike-Akino

Modern quantum machine learning (QML) methods involve the variational optimization of parameterized quantum circuits on training datasets, followed by predictions on testing datasets.

Denoising Few-Shot Learning +1

Analyzing Inference Privacy Risks Through Gradients in Machine Learning

no code implementations29 Aug 2024 Zhuohang Li, Andrew Lowy, Jing Liu, Toshiaki Koike-Akino, Kieran Parsons, Bradley Malin, Ye Wang

While previous work has studied various privacy risks of sharing gradients, our paper aims to provide a systematic approach to analyze private information leakage from gradients.

Attribute

Multi-Band Wi-Fi Neural Dynamic Fusion

no code implementations17 Jul 2024 Sorachi Kato, Pu Perry Wang, Toshiaki Koike-Akino, Takuya Fujihashi, Hassan Mansour, Petros Boufounos

In contrast, this paper considers asynchronous sequence-to-sequence fusion between sub-7-GHz channel state information (CSI) and 60-GHz beam signal-to-noise-ratio~(SNR)s for more challenging tasks such as continuous coordinate estimation.

Variational Randomized Smoothing for Sample-Wise Adversarial Robustness

no code implementations16 Jul 2024 Ryo Hase, Ye Wang, Toshiaki Koike-Akino, Jing Liu, Kieran Parsons

Randomized smoothing is a defensive technique to achieve enhanced robustness against adversarial examples which are small input perturbations that degrade the performance of neural network models.

Adversarial Robustness

Random Channel Ablation for Robust Hand Gesture Classification with Multimodal Biosignals

no code implementations15 Jul 2024 Keshav Bimbraw, Jing Liu, Ye Wang, Toshiaki Koike-Akino

Notably, the proposed method is also robust to an increase in the number of missing channels compared to other methods.

Classification Imputation

GPT Sonograpy: Hand Gesture Decoding from Forearm Ultrasound Images via VLM

no code implementations15 Jul 2024 Keshav Bimbraw, Ye Wang, Jing Liu, Toshiaki Koike-Akino

Large vision-language models (LVLMs), such as the Generative Pre-trained Transformer 4-omni (GPT-4o), are emerging multi-modal foundation models which have great potential as powerful artificial-intelligence (AI) assistance tools for a myriad of applications, including healthcare, industrial, and academic sectors.

In-Context Learning

Efficient Differentially Private Fine-Tuning of Diffusion Models

no code implementations7 Jun 2024 Jing Liu, Andrew Lowy, Toshiaki Koike-Akino, Kieran Parsons, Ye Wang

The recent developments of Diffusion Models (DMs) enable generation of astonishingly high-quality synthetic samples.

parameter-efficient fine-tuning

TI2V-Zero: Zero-Shot Image Conditioning for Text-to-Video Diffusion Models

1 code implementation CVPR 2024 Haomiao Ni, Bernhard Egger, Suhas Lohit, Anoop Cherian, Ye Wang, Toshiaki Koike-Akino, Sharon X. Huang, Tim K. Marks

To guide video generation with the additional image input, we propose a "repeat-and-slide" strategy that modulates the reverse denoising process, allowing the frozen diffusion model to synthesize a video frame-by-frame starting from the provided image.

Denoising Image to Video Generation

SuperLoRA: Parameter-Efficient Unified Adaptation of Multi-Layer Attention Modules

no code implementations18 Mar 2024 Xiangyu Chen, Jing Liu, Ye Wang, Pu, Wang, Matthew Brand, Guanghui Wang, Toshiaki Koike-Akino

Low-rank adaptation (LoRA) and its variants are widely employed in fine-tuning large models, including large language models for natural language processing and diffusion models for computer vision.

Transfer Learning

AutoHLS: Learning to Accelerate Design Space Exploration for HLS Designs

no code implementations15 Mar 2024 Md Rubel Ahmed, Toshiaki Koike-Akino, Kieran Parsons, Ye Wang

High-level synthesis (HLS) is a design flow that leverages modern language features and flexibility, such as complex data structures, inheritance, templates, etc., to prototype hardware designs rapidly.

Bayesian Optimization High-Level Synthesis

Why Does Differential Privacy with Large Epsilon Defend Against Practical Membership Inference Attacks?

no code implementations14 Feb 2024 Andrew Lowy, Zhuohang Li, Jing Liu, Toshiaki Koike-Akino, Kieran Parsons, Ye Wang

In practical applications, such a worst-case guarantee may be overkill: practical attackers may lack exact knowledge of (nearly all of) the private data, and our data set might be easier to defend, in some sense, than the worst-case data set.

Inference Attack Membership Inference Attack

Stabilizing Subject Transfer in EEG Classification with Divergence Estimation

no code implementations12 Oct 2023 Niklas Smedemark-Margulies, Ye Wang, Toshiaki Koike-Akino, Jing Liu, Kieran Parsons, Yunus Bicer, Deniz Erdogmus

Classification models for electroencephalogram (EEG) data show a large decrease in performance when evaluated on unseen test sub jects.

EEG Subject Transfer

Steered Diffusion: A Generalized Framework for Plug-and-Play Conditional Image Synthesis

1 code implementation ICCV 2023 Nithin Gopalakrishnan Nair, Anoop Cherian, Suhas Lohit, Ye Wang, Toshiaki Koike-Akino, Vishal M. Patel, Tim K. Marks

To this end, and capitalizing on the powerful fine-grained generative control offered by the recent diffusion-based generative models, we introduce Steered Diffusion, a generalized framework for photorealistic zero-shot conditional image generation using a diffusion model trained for unconditional generation.

Colorization Conditional Image Generation +2

quEEGNet: Quantum AI for Biosignal Processing

no code implementations29 Sep 2022 Toshiaki Koike-Akino, Ye Wang

In this paper, we introduce an emerging quantum machine learning (QML) framework to assist classical deep learning methods for biosignal processing applications.

EEG Quantum Machine Learning

Adversarial Bi-Regressor Network for Domain Adaptive Regression

no code implementations20 Sep 2022 Haifeng Xia, Pu Perry Wang, Toshiaki Koike-Akino, Ye Wang, Philip Orlik, Zhengming Ding

Domain adaptation (DA) aims to transfer the knowledge of a well-labeled source domain to facilitate unlabeled target learning.

Domain Adaptation regression

Quantum Feature Extraction for THz Multi-Layer Imaging

no code implementations18 Jul 2022 Toshiaki Koike-Akino, Pu Wang, Genki Yamashita, Wataru Tsujita, Makoto Nakajima

A learning-based THz multi-layer imaging has been recently used for contactless three-dimensional (3D) positioning and encoding.

BIG-bench Machine Learning Quantum Machine Learning

Learning to Learn Quantum Turbo Detection

no code implementations17 May 2022 Bryan Liu, Toshiaki Koike-Akino, Ye Wang, Kieran Parsons

This paper investigates a turbo receiver employing a variational quantum circuit (VQC).

Decoder

Variational Quantum Compressed Sensing for Joint User and Channel State Acquisition in Grant-Free Device Access Systems

no code implementations17 May 2022 Bryan Liu, Toshiaki Koike-Akino, Ye Wang, Kieran Parsons

This paper introduces a new quantum computing framework integrated with a two-step compressed sensing technique, applied to a joint channel estimation and user identification problem.

Denoising User Identification

Quantum Transfer Learning for Wi-Fi Sensing

no code implementations17 May 2022 Toshiaki Koike-Akino, Pu Wang, Ye Wang

Beyond data communications, commercial-off-the-shelf Wi-Fi devices can be used to monitor human activities, track device locomotion, and sense the ambient environment.

Transfer Learning

AutoQML: Automated Quantum Machine Learning for Wi-Fi Integrated Sensing and Communications

no code implementations17 May 2022 Toshiaki Koike-Akino, Pu Wang, Ye Wang

Commercial Wi-Fi devices can be used for integrated sensing and communications (ISAC) to jointly exchange data and monitor indoor environment.

BIG-bench Machine Learning Quantum Machine Learning

Multi-Modal Recurrent Fusion for Indoor Localization

no code implementations19 Feb 2022 Jianyuan Yu, Pu, Wang, Toshiaki Koike-Akino, Philip V. Orlik

This paper considers indoor localization using multi-modal wireless signals including Wi-Fi, inertial measurement unit (IMU), and ultra-wideband (UWB).

Indoor Localization regression

Multi-Band Wi-Fi Sensing with Matched Feature Granularity

no code implementations28 Dec 2021 Jianyuan Yu, Pu, Wang, Toshiaki Koike-Akino, Ye Wang, Philip V. Orlik, R. Michael Buehrer

The granularity matching is realized by pairing two feature maps from the CSI and beam SNR at different granularity levels and linearly combining all paired feature maps into a fused feature map with learnable weights.

Indoor Localization

AutoTransfer: Subject Transfer Learning with Censored Representations on Biosignals Data

no code implementations17 Dec 2021 Niklas Smedemark-Margulies, Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

We provide a regularization framework for subject transfer learning in which we seek to train an encoder and classifier to minimize classification loss, subject to a penalty measuring independence between the latent representation and the subject label.

EEG Subject Transfer +1

A Modular 1D-CNN Architecture for Real-time Digital Pre-distortion

no code implementations18 Nov 2021 Udara De Silva, Toshiaki Koike-Akino, Rui Ma, Ao Yamashita, Hideyuki Nakamizo

This study reports a novel hardware-friendly modular architecture for implementing one dimensional convolutional neural network (1D-CNN) digital predistortion (DPD) technique to linearize RF power amplifier (PA) real-time. The modular nature of our design enables DPD system adaptation for variable resource and timing constraints. Our work also presents a co-simulation architecture to verify the DPD performance with an actual power amplifier hardware-in-the-loop. The experimental results with 100 MHz signals show that the proposed 1D-CNN obtains superior performance compared with other neural network architectures for real-time DPD application.

EEG-GNN: Graph Neural Networks for Classification of Electroencephalogram (EEG) Signals

no code implementations16 Jun 2021 Andac Demir, Toshiaki Koike-Akino, Ye Wang, Masaki Haruna, Deniz Erdogmus

Convolutional neural networks (CNN) have been frequently used to extract subject-invariant features from electroencephalogram (EEG) for classification tasks.

channel selection EEG +1

DNN-assisted optical geometric constellation shaped PSK modulation for PAM4-to-QPSK format conversion gateway node

no code implementations23 Feb 2021 Takahiro Kodama, Toshiaki Koike-Akino, David S. Millar, Keisuke Kojima, Kieran Parsons

An optical gateway to convert four-level pulse amplitude modulation to quadrature phase shift keying modulation format having shaping gain was proposed for flexible intensity to phase mapping which exploits non-uniform phase noise.

Universal Physiological Representation Learning with Soft-Disentangled Rateless Autoencoders

no code implementations28 Sep 2020 Mo Han, Ozan Ozdenizci, Toshiaki Koike-Akino, Ye Wang, Deniz Erdogmus

Human computer interaction (HCI) involves a multidisciplinary fusion of technologies, through which the control of external devices could be achieved by monitoring physiological status of users.

Disentanglement Subject Transfer

Disentangled Adversarial Autoencoder for Subject-Invariant Physiological Feature Extraction

no code implementations26 Aug 2020 Mo Han, Ozan Ozdenizci, Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

Recent developments in biosignal processing have enabled users to exploit their physiological status for manipulating devices in a reliable and safe manner.

Subject Transfer Transfer Learning

Huffman-Coded Sphere Shaping for Extended-Reach Single-Span Links

no code implementations5 Aug 2020 Pavel Skvortcov, Ian Phillips, Wladek Forysiak, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons, David S. Millar

Huffman-coded sphere shaping (HCSS) is an algorithm for finite-length probabilistic constellation shaping, which provides nearly optimal energy efficiency at low implementation complexity.

Robust Machine Learning via Privacy/Rate-Distortion Theory

no code implementations22 Jul 2020 Ye Wang, Shuchin Aeron, Adnan Siraj Rakin, Toshiaki Koike-Akino, Pierre Moulin

Robust machine learning formulations have emerged to address the prevalent vulnerability of deep neural networks to adversarial examples.

BIG-bench Machine Learning

AutoBayes: Automated Bayesian Graph Exploration for Nuisance-Robust Inference

no code implementations2 Jul 2020 Andac Demir, Toshiaki Koike-Akino, Ye Wang, Deniz Erdogmus

Learning data representations that capture task-related features, but are invariant to nuisance variations remains a key challenge in machine learning.

Bayesian Inference BIG-bench Machine Learning +5

Wireless 3D Point Cloud Delivery Using Deep Graph Neural Networks

no code implementations17 Jun 2020 Takuya Fujihashi, Toshiaki Koike-Akino, Siheng Chen, Takashi Watanabe

To prevent the cliff effect subject to channel quality fluctuation, we have proposed soft point cloud delivery called HoloCast.

3D Reconstruction Graph Neural Network +1

Huffman-coded Sphere Shaping and Distribution Matching Algorithms via Lookup Tables

no code implementations12 Jun 2020 Tobias Fehenberger, David S. Millar, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons, Helmut Griesser

In this paper, we study amplitude shaping schemes for the probabilistic amplitude shaping (PAS) framework as well as algorithms for constant-composition distribution matching (CCDM).

Stochastic Bottleneck: Rateless Auto-Encoder for Flexible Dimensionality Reduction

no code implementations6 May 2020 Toshiaki Koike-Akino, Ye Wang

This is motivated by the rateless property of conventional PCA, where the least important principal components can be discarded to realize variable rate dimensionality reduction that gracefully degrades the distortion.

Dimensionality Reduction

Disentangled Adversarial Transfer Learning for Physiological Biosignals

no code implementations15 Apr 2020 Mo Han, Ozan Ozdenizci, Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

Recent developments in wearable sensors demonstrate promising results for monitoring physiological status in effective and comfortable ways.

Transfer Learning

Neural Turbo Equalization: Deep Learning for Fiber-Optic Nonlinearity Compensation

no code implementations22 Nov 2019 Toshiaki Koike-Akino, Ye Wang, David S. Millar, Keisuke Kojima, Kieran Parsons

Recently, data-driven approaches motivated by modern deep learning have been applied to optical communications in place of traditional model-based counterparts.

Deep Learning

Adversarial Deep Learning in EEG Biometrics

no code implementations27 Mar 2019 Ozan Ozdenizci, Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

Deep learning methods for person identification based on electroencephalographic (EEG) brain activity encounters the problem of exploiting the temporally correlated structures or recording session specific variability within EEG.

Deep Learning EEG +2

Deep Learning-Based Constellation Optimization for Physical Network Coding in Two-Way Relay Networks

no code implementations9 Mar 2019 Toshiki Matsumine, Toshiaki Koike-Akino, Ye Wang

This paper studies a new application of deep learning (DL) for optimizing constellations in two-way relaying with physical-layer network coding (PNC), where deep neural network (DNN)-based modulation and demodulation are employed at each terminal and relay node.

Learning to Modulate for Non-coherent MIMO

no code implementations9 Mar 2019 Ye Wang, Toshiaki Koike-Akino

The deep learning trend has recently impacted a variety of fields, including communication systems, where various approaches have explored the application of neural networks in place of traditional designs.

Transfer Learning in Brain-Computer Interfaces with Adversarial Variational Autoencoders

no code implementations17 Dec 2018 Ozan Ozdenizci, Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

We introduce adversarial neural networks for representation learning as a novel approach to transfer learning in brain-computer interfaces (BCIs).

EEG Motor Imagery +2

Invariant Representations from Adversarially Censored Autoencoders

no code implementations21 May 2018 Ye Wang, Toshiaki Koike-Akino, Deniz Erdogmus

In this method, an adversarial network attempts to recover the nuisance variable from the representation, which the VAE is trained to prevent.

Decoder Style Transfer

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