Results 91 to 100 of about 1,727,048 (195)

Categorical Dimensions of Human Odor Descriptor Space Revealed by Non-Negative Matrix Factorization [PDF]

, 2013
In contrast to most other sensory modalities, the basic perceptual dimensions of olfaction remain unclear. Here, we use non-negative matrix factorization (NMF) – a dimensionality reduction technique – to uncover structure in a panel of odor profiles ...
Castro, Jason B., Jason B. Castro, Castro, Jason B, Chennubhotla, Chakra S., Ramanathan, Arvind, Schaefer, Andreas, Chennubhotla Chakra S., Arvind Ramanathan (198127), Jason B. Castro (460485), Jason B Castro, Ramanathan Arvind, Arvind Ramanathan, Castro Jason B., Chakra S. Chennubhotla, Chennubhotla, Chakra S, Chakra S Chennubhotla, Chakra S. Chennubhotla (232086)   +16 more
core   +2 more sources

Underwater acoustic target signal enhancement algorithm optimized by feature preservation and noise update [PDF]

Zhihui kongzhi yu fangzhen
The enhancement effect of the classic Nonnegative Matrix Factorization (NMF) applied to underwater acoustic target signal is unsatisfactory for the feature overlap of underwater acoustic target signal and the variability of ocean underwater acoustic ...
XIAO Haixia, CUI Shuangyue, LI Dawei, SUN Mingming, LIU Xianzhong, YANG Zhenxin
doaj   +1 more source

Nonnegative Matrix Factorization of time frequency representation of vibration signal for local damage detection – comparison of algorithms

E3S Web of Conferences, 2018
Local damage detection in rotating machine elements is very important problem widely researched in the literature. One of the most common approaches is the vibration signal analysis.
Wodecki Jacek
doaj   +1 more source

Blind Calibration of Mobile Sensors Using Informed Nonnegative Matrix Factorization

, 2015
International audienceIn this paper, we assume several heterogeneous, geolocalized, and time-stamped sensors to observe an area over time. We also assume that most of them are uncalibrated and we propose a novel formulation of the blind calibration ...
Gilles Delmaire, Gilles Roussel, Roussel, Gilles, Delmaire, Gilles, Clément Dorffer, Puigt, Matthieu, Dorffer, Clément, Matthieu Puigt   +7 more
core   +1 more source

Novel methods for spatial risks analysis and quantitative source apportionment of heavy metals pollution in agricultural soils

Journal of Agriculture and Food Research
Precision pollution control relies on accurate spatial interpolation and quantitative source apportionment. This study addresses key methodological gaps by developing two novel tools: a non-negative constrained biharmonic spline interpolation algorithm ...
Qinqin Yu, Jinying Li, Jiahao Li, Tong Liu, Fangyuan Chen, Yao Liu, Haoming Wang, Shaoyang Tao, Min Zhou, Haobo Hou   +9 more
doaj   +1 more source

Pseudo-marginal Markov Chain Monte Carlo for Nonnegative Matrix Factorization [PDF]

, 2017
A pseudo-marginal Markov chain Monte Carlo (PMCMC) method is proposed for nonnegative matrix factorization (NMF). The sampler jointly simulates the joint posterior distribution for the nonnegative matrices and the matrix dimensions which indicate the ...
Du, Junfu, Zhong, Mingjun
core   +1 more source

L1/2 Sparsity Constrained Nonnegative Matrix Factorization for Hyperspectral Unmixing

, 2010
Hyperspectral unmixing is a crucial preprocessing step for material classification and recognition. In the last decade, nonnegative matrix factorization (NMF) and its extensions have been intensively studied to unmix hyperspectral imagery and recover ...
Jia, Sen, Qian, Yuntao, Zhou, Jun, Robles-Kelly, Antonio, Sen Jia, Jun Zhou, Jia, S, Antonio, RK, Yuntao Qian, Zhou, J, Antonio Robles-Kelly, Qian, Y   +11 more
core   +1 more source

Towards Evolutionary Nonnegative Matrix Factorization

, 2011
Nonnegative Matrix Factorization (NMF) techniques has aroused considerable interests from the field of artificial intelligence in recent years because of its good interpretability and computational efficiency.
Tong, Hanghang, Wang, Fei, Lin, Ching-Yung   +2 more
core   +1 more source

Robust Non-negative Matrix Factorization Clustering Algorithm with Dual-Graph Regularization [PDF]

Jisuanji kexue yu tansuo
Non-negative matrix factorization (NMF), as an effective approach for data representation and dimensionality reduction, has been extensively utilized in domains such as image processing and text clustering.
GAO Haiyan, LIU Mengshu, ZHOU Gaigai, ZHONG Ling
doaj   +1 more source

A Hybrid Algorithm for Estimating Origin-Destination Flows

IEEE Access, 2018
With the development of intelligent transportation systems, the estimation of traffic flow in urban areas has attracted a great attention of researchers.
Xianghua Li, Jurgen Kurths, Chao Gao, Junwei Zhang, Zhen Wang, Zili Zhang   +5 more
doaj   +1 more source