Filters








3,293 Hits in 4.5 sec

Candidates for Synergies: Linear Discriminants versus Principal Components

Ramana Vinjamuri, Vrajeshri Patel, Michael Powell, Zhi-Hong Mao, Nathan Crone
2014 Computational Intelligence and Neuroscience  
Synergies obtained using PCA are principal component vectors aligned with dominant variances.  ...  On the other hand, synergies obtained using LDA are linear discriminant vectors that separate the groups of variances.  ...  The contribution of linear discriminants plateaued beyond 5 synergies, but the contribution of principal components continued beyond six synergies.  ... 
doi:10.1155/2014/373957 pmid:25143763 pmcid:PMC4124789 fatcat:w35hfzuszzfnddpdy3iruetoeu

Candidates for Synergies: Linear Discriminants versus Principal Components [article]

Ramana Vinjamuri, Vrajeshri Patel, Michael Powell, Zhi-Hong Mao, Nathan Crone, Maryland Shared Open Access Repository
2021
Synergies obtained using PCA are principal component vectors aligned with dominant variances.  ...  On the other hand, synergies obtained using LDA are linear discriminant vectors that separate the groups of variances.  ...  The contribution of linear discriminants plateaued beyond 5 synergies, but the contribution of principal components continued beyond six synergies.  ... 
doi:10.13016/m2qfln-bhk9 fatcat:twdlavcqmngofdmhqjrekc7vh4

Synergy and redundancy in the Granger causal analysis of dynamical networks

Sebastiano Stramaglia, Jesus M Cortes, Daniele Marinazzo
2014 New Journal of Physics  
We consider here two different strategies (based either on informational content for the candidate driver or on selecting the variables with highest pairwise influences) for partially conditioned Granger  ...  Whilst we show that fully conditioned Granger causality is not affected by synergy, the pairwise analysis fails to put in evidence synergetic effects.  ...  Several approaches have been proposed to reduce dimensionality in multivariate sets that eliminate redundancy, which rely on generalized variance [32] , principal components analysis [33] , or GC itself  ... 
doi:10.1088/1367-2630/16/10/105003 fatcat:5evtcnqedzgphjfcn2fnzkyqem

Cross‐spectral synergy and consonant identification

Thomas Ulrich Christiansen, Steven Greenberg
2008 Journal of the Acoustical Society of America  
A qualitative analysis of the curves slope of the sound reduction index versus frequency has been conducted for each drying time for each type of evaluated wall.  ...  For the primary spatial variation, the effects of the relative distributions of absorption and input power are linear and uncoupled.  ...  Some basic classifiers have been tested ͑k-nearest neighbours, FLD ͑Fischer linear discriminator͒ and principal components.  ... 
doi:10.1121/1.2935680 fatcat:znwocm35unasharfwbcap5omim

Synergy Between Global Positioning System Code, Carrier, and Signal-to-Noise Ratio Multipath Errors

Jayanta Kumar Ray, M. Elizabeth Cannon
2001 Journal of Guidance Control and Dynamics  
Equations (1—6) are for t three components of the uniform vortex vector of the contained liquid and the three components of the angular velocity vector of the main body.  ...  We are secking an outstanding candidate with an international reputation for this position, and we invite your nominations.  ... 
doi:10.2514/2.4675 fatcat:ju73wnoqozfoni7pp5pesatpsq

Synergies between Musical Source Separation and Instrument Recognition

Juan José Bosch, Jordi Janer
2011 Zenodo  
In contrast with the huge need for both algorithms, the results obtained so far show that there is still much room for improvement.  ...  The main purpose of this thesis is to find synergies between instrument recognition and source separation algorithms in two different tasks: 1) the separation of a target instrument from the accompaniment  ...  The variables in the new space, which are named principal components, are a linear combination of the original variables.  ... 
doi:10.5281/zenodo.3753890 fatcat:sbmvvntdwnhp7czpnbpa3fa3p4

Interpol review of gunshot residue 2016–2019

Sébastien Charles, Nadia Geusens, Emeline Vergalito, Bart Nys
2020 Forensic Science International: Synergy  
The resulting chemical profiles were statistically assessed using principal components analysis and hierarchical cluster analysis to evaluate discrimination of unburned powders based on chemical composition  ...  Image processing was performed using principal components analysis on images that were binarized and inverted for better visualisation of the patterns.  ... 
doi:10.1016/j.fsisyn.2020.01.011 pmid:33385140 pmcid:PMC7770441 fatcat:i5goh5rs3jah5e6lkjjyiojlci

Temporal Postural Synergies of the Hand in Rapid Grasping Tasks

Ramana Vinjamuri, Mingui Sun, Cheng-Chun Chang, Heung-No Lee, Robert J Sclabassi, Zhi-Hong Mao
2010 IEEE Transactions on Information Technology in Biomedicine  
for larger movements, and hierarchical recruitment of joints, adapted by subjects while grasping.  ...  Postural synergies of the hand have been widely proposed in the literature, but only a few attempts were made to visualize temporal postural synergies, i.e., profiles of postural synergies varying over  ...  ACKNOWLEDGMENT The authors would like to thank the reviewers and editors for their valuable suggestions and comments.  ... 
doi:10.1109/titb.2009.2038907 pmid:20071263 fatcat:y3ddup2c65e7zaorfoieaaji4i

Synergies between low- and intermediate-redshift galaxy populations revealed with unsupervised machine learning [article]

Sebastian Turner, Małgorzata Siudek, Samir Salim, Ivan K. Baldry, Agnieszka Pollo, Steven N. Longmore, Katarzyna Małek, Chris A. Collins, Paulo J. Lisboa, Janusz Krywult, Thibaud Moutard, Daniela Vergani (+1 others)
2021 arXiv   pre-print
The colour bimodality of galaxies provides an empirical basis for theories of galaxy evolution. However, the balance of processes that begets this bimodality has not yet been constrained.  ...  We choose a clustering algorithm that models clusters using only the most discriminative data available, and apply it to two galaxy samples: one from the second edition of the GALEX-SDSS-WISE Legacy Catalogue  ...  Takeuchi, and our referee for feedback which improved the quality of our manuscript.  ... 
arXiv:2102.05056v1 fatcat:4ylbmosas5ghzh3xdh36s2ldvi

Synergy between the Large Synoptic Survey Telescope and the Square Kilometre Array [article]

David Bacon, Sarah Bridle, Filipe B. Abdalla, Michael Brown, Philip Bull, Stefano Camera, Rob Fender, Keith Grainge, Zeljko Ivezic, Matt Jarvis, Neal Jackson, Donnacha Kirk, Bob Mann (+7 others)
2015 arXiv   pre-print
Figure 3 : 3 The forecast 68% CL measurement error of the principal components, for the dark energy equation of state, for different survey combinations listed in the legend. information about the time  ...  Figure 4 : 4 The forecast 68% CL error of the principal components of µ(k, z) (top panel) and γ(k, z) (bottom panel), for different survey combinations listed in the legend.  ... 
arXiv:1501.03977v1 fatcat:gx7fqtpln5eufllim3gadquahi

Development of a rapid screening approach for candidate gene sets in cancer

R Wittig, R Salowsky, S Blaich, S Lyer, JS Maa, O Müller, J Mollenhauer, A Poustka
2005 Breast Cancer Research  
Mice are being followed for mammary tumor development.  ...  Our data do not support the hypothesis that TGF-β signaling in mammary carcinoma cells is important for invasion and metastasis, at least in this model system.  ...  The spectral region 2.9-4.8 ppm was selected for principal component analysis (PCA). Two sample sets were used as PCA input: all samples (n = 115) and tumor samples (n = 69).  ... 
doi:10.1186/bcr1150 fatcat:t72zuetkq5gerkaa67wmmdimnq

Mechanical testing of bones: the positive synergy of finite-element models and in vitro experiments

L. Cristofolini, E. Schileo, M. Juszczyk, F. Taddei, S. Martelli, M. Viceconti
2010 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
In most cases either approach is chosen, without exploiting synergies.  ...  improve in vitro experiments by: (i) identifying the most relevant loading configurations among a number of motor tasks that cannot be replicated in vitro; (ii) identifying acceptable simplifications for  ...  The authors wish to thank Melinda Harman for revising the script, and Luigi Lena for the artwork. This study was supported by public institutions only (European Community and Regione Emilia-Romagna).  ... 
doi:10.1098/rsta.2010.0046 pmid:20439271 fatcat:fdtrgjdwrjfihd7u7xj4nlnqcu

Large-scale single nucleotide polymorphism analysis of candidates for low-penetrance breast cancer genes

A Vega, A Salas, C Phillips, B Sobrino, B Carracedo, C Ruíz-Ponte, R Rodríguez-López, G Rivas, J Benítez, A Carracedo
2005 Breast Cancer Research  
Mice are being followed for mammary tumor development.  ...  Our data do not support the hypothesis that TGF-β signaling in mammary carcinoma cells is important for invasion and metastasis, at least in this model system.  ...  The spectral region 2.9-4.8 ppm was selected for principal component analysis (PCA). Two sample sets were used as PCA input: all samples (n = 115) and tumor samples (n = 69).  ... 
doi:10.1186/bcr1101 fatcat:xu3pq2rtgncivpuwsueaqggynu

Adjustments of prehension synergies in response to self-triggered and experimenter-triggered load and torque perturbations

Jae Kun Shim, Jaebum Park, Vladimir M. Zatsiorsky, Mark L. Latash
2006 Experimental Brain Research  
Pennsylvania State University for screening the subjects, and to the staff and participants at the Foxdale Village (State College, PA) for their cooperation.  ...  The authors are grateful to Ning Kang, Brendan Lay, and Minoru Shinohara for their help in some of the reviewed studies.  ...  variance accounted for by each principal component for the PCA ran on finger force times (a) and finger force magnitudes (b) for the actual (filled bars) and surrogate (open bars) data sets.  ... 
doi:10.1007/s00221-006-0583-7 pmid:16804720 pmcid:PMC2821078 fatcat:xfd2fn2xjbexld4q6klo2auayu

Assessment of Myoelectric Controller Performance and Kinematic Behavior of a Novel Soft Synergy-Inspired Robotic Hand for Prosthetic Applications

Simone Fani, Matteo Bianchi, Sonal Jain, José Simões Pimenta Neto, Scott Boege, Giorgio Grioli, Antonio Bicchi, Marco Santello
2016 Frontiers in Neurorobotics  
As a preliminary step, we first quantified the repeatability of the SoftHand Pro finger movements and identified the electromyographic recording sites for able-bodied individuals with the highest signal-to-noise  ...  ERC-291166), the EU H2020 projects "SoftPro: Synergy-based Open-source Foundations and Technologies for Prosthetics and Rehabilitation" (No. 688857), the EU FP7 project (No. 601165) "WEARable HAPtics for  ...  FUNDING This work was partially supported by the Grainger Foundation, the European Research Council under the Advanced Grant Soft-Hands "A Theory of Soft Synergies for a New Generation of Artificial Hands  ... 
doi:10.3389/fnbot.2016.00011 pmid:27799908 pmcid:PMC5066092 fatcat:2az6ucnzjbflxdvzsksuqjlhpu
« Previous Showing results 1 — 15 out of 3,293 results