نتایج جستجو برای: روش pls

تعداد نتایج: 380266  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Da Chen Xueguang Shao Bin Hu Qingde Su

Near-infrared (NIR) spectrometry will present a more promising tool for quantitative measurement if the robustness and predictive ability of the partial least square (PLS) model are improved. In order to achieve the purpose, we present a new algorithm for simultaneous wavelength selection and outlier detection; at the same time, the problems of background and noise in multivariate calibration a...

2007
D. Roland Thomas Marzena Cedzynski

Partial least squares (PLS) is sometimes used as an alternative to covariance-based structural equation modeling (SEM). This paper briefly reviews currently available SEM techniques, and provides a critique of the perceived advantages of PLS over covariance-based SEM as commonly cited by PLS users. Specific attention is drawn to the primary disadvantage of PLS, namely the lack of consistency of...

Journal: :Transplantation 1977
K Fukao N Kashiwagi T Kajiwara M Ishikawa B Husberg R Weil T E Starzl

Using solid state radioimmunoassays developed by the first author, changes in the urine level of plasmin-like substances (PLS) and fibrin degradation products (FDP) before and after human kidney transplantation were determined in 49 transplant patients. Averages of urine PLS and FDP in a normal population of 51 persons were 0.13+/-0.10 (SD) and 0.14+/-0.07 microng/ml, respectively. In all trans...

Journal: :Archives of neurology 2007
Maria Carmela Tartaglia Ann Rowe Karen Findlater J B Orange Gloria Grace Michael J Strong

BACKGROUND Motor neuron diseases can affect the upper motor neuron and/or the lower motor neuron. Both amyotrophic lateral sclerosis (ALS) and primary lateral sclerosis (PLS) are motor neuron diseases, and there is much debate as to whether these are 2 separate disorders or simply 2 points on a continuum. OBJECTIVE To determine which clinical features at onset and during follow-up could help ...

2013
Md. Shamim Hossain Masataka Ifuku Sachiko Take Jun Kawamura Kiyotaka Miake Toshihiko Katafuchi

Neuronal cells are susceptible to many stresses, which will cause the apoptosis and neurodegenerative diseases. The precise molecular mechanism behind the neuronal protection against these apoptotic stimuli is necessary for drug discovery. In the present study, we have found that plasmalogens (Pls), which are glycerophospholipids containing vinyl ether linkage at sn-1 position, can protect the ...

2012
I. S. Helland

4 We build connections between envelopes, a recently proposed context for efficient estima5 tion in multivariate statistics, and multivariate partial least squares (PLS) regression. In partic6 ular, we establish an envelope as the nucleus of both univariate and multivariate PLS, which 7 opens the door to pursuing the same goals as PLS but using different envelope estimators. It 8 is argued that...

Journal: :Neurology 2005
F Brugman J H J Wokke J M B Vianney de Jong H Franssen C G Faber L H Van den Berg

Primary lateral sclerosis (PLS) is a diagnosis of exclusion in patients with progressive spinobulbar spasticity and could be part of the clinical spectrum of ALS. Unlike ALS, which is familial in 5 to 10% of the cases, PLS has been described as a sporadic disorder in adults. The authors report two patients with PLS from unrelated SOD1-negative familial ALS families. These observations provide f...

2013
Kee Siong Ng

Partial Least Squares (PLS) is a widely used technique in chemometrics, especially in the case where the number of independent variables is significantly larger than the number of data points. There are many articles on PLS [HTF01, GK86] but the mathematical details of PLS do not always come out clearly in these treatments. This paper is an attempt to describe PLS in precise and simple mathemat...

Journal: :Briefings in bioinformatics 2007
Anne-Laure Boulesteix Korbinian Strimmer

Partial least squares (PLS) is an efficient statistical regression technique that is highly suited for the analysis of genomic and proteomic data. In this article, we review both the theory underlying PLS as well as a host of bioinformatics applications of PLS. In particular, we provide a systematic comparison of the PLS approaches currently employed, and discuss analysis problems as diverse as...

2009
Virginia Ilie Sweta Seha Wenying Nan Sun

This study assesses physicians’ intention to engage with electronic medical records (EMR) in the context of pre-EMR implementation in developing countries. We developed a model and corresponding hypotheses grounded in the sociocognitive theory and the decomposed theory of planned behavior. A survey of physicians in the Middle-East was conducted and the results empirically analyzed via PLS. We f...

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