Results 21 to 30 of about 636 (117)

Neural decoding of imagined speech from EEG signals using the fusion of graph signal processing and graph learning techniques

open access: yesNeuroscience Informatics, 2022
Imagined Speech (IS) is the imagination of speech without using the tongue or muscles. In recent studies, IS tasks are increasingly investigated for the Brain-Computer Interface (BCI) applications. Electroencephalography (EEG) signals, which record brain
Aref Einizade   +4 more
doaj   +1 more source

GSP = DSP + Boundary Conditions -- The Graph Signal Processing Companion Model

open access: yes, 2023
The paper presents the graph signal processing (GSP) companion model that naturally replicates the basic tenets of classical signal processing (DSP) for GSP. The companion model shows that GSP can be made equivalent to DSP 'plus' appropriate boundary conditions (bc) - this is shown under broad conditions and holds for arbitrary undirected or directed ...
Shi, John, Moura, Jose M. F.
openaire   +2 more sources

An MMSE graph spectral magnitude estimator for speech signals residing on an undirected multiple graph

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2023
The paper uses the K-graphs learning method to construct weighted, connected, undirected multiple graphs, aiming to reveal intrinsic relationships of speech samples in the inter-frame and intra-frame. To benefit from the learned multiple graphs’ property
Tingting Wang   +4 more
doaj   +1 more source

Graph Signal Smoothness Based Feature Learning of Brain Functional Networks in Schizophrenia

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023
In this paper we study the brain functional network of schizophrenic patients based on resting-state fMRI data. Different from the region of interest (ROI)-level brain networks that describe the connectivity between brain regions, this paper constructs a
Xiaoying Song, Li Chai
doaj   +1 more source

Short-Time Prediction Model for Urban Traffic Flow Based on Joint Spatio-Temporal Learning [PDF]

open access: yesJisuanji gongcheng, 2023
A joint spatio-temporal analysis can reflect the changing pattern of a studied object in the spatio-temporal dimension, which is significant for revealing the spatio-temporal interactions and mechanisms of regional processes.With a focus on joint spatio ...
GE Yuran, FU Qiang
doaj   +1 more source

Apply Graph Signal Processing on NILM: An Unsupervised Approach Featuring Power Sequences

open access: yesSensors, 2023
As a low-cost demand-side management application, non-intrusive load monitoring (NILM) offers feedback on appliance-level electricity usage without extra sensors.
Bochao Zhao   +3 more
doaj   +1 more source

Brain structure-function coupling provides signatures for task decoding and individual fingerprinting

open access: yesNeuroImage, 2022
Brain signatures of functional activity have shown promising results in both decoding brain states, meaning distinguishing between different tasks, and fingerprinting, that is identifying individuals within a large group.
Alessandra Griffa   +4 more
doaj   +1 more source

Graph signal processing based underwater image enhancement techniques

open access: yesEngineering Science and Technology, an International Journal, 2022
This paper presents two new methods based on graph signal processing (GSP) techniques to enhance underwater images. The proposed schemes utilize the graph Fourier transform (GFT) and graph wavelet filterbanks in place of the conventional Fourier and ...
Shobha Sharma, Tarun Varma
doaj   +1 more source

Speaker verification method based on cross-domain attentive feature fusion

open access: yesTongxin xuebao, 2023
Aiming at the problem that the lack of structure information among speech signal sample in the front-end acoustic features of speaker verification system, a speaker verification method based on cross-domain attentive feature fusion was proposed.Firstly ...
Zhen YANG   +3 more
doaj   +2 more sources

Improving Event-Based Non-Intrusive Load Monitoring Using Graph Signal Processing

open access: yesIEEE Access, 2018
Large-scale smart energy metering deployment worldwide and integration of smart meters within the smart grid will enable two-way communication between the consumer and energy network, thus ensuring improved response to demand.
Bochao Zhao   +3 more
doaj   +1 more source

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