نتایج جستجو برای: روش آماری pls

تعداد نتایج: 412475  

Journal: :ISPRS Int. J. Geo-Information 2016
Yongjiu Feng Miaolong Liu Lijun Chen Yu Liu

We developed a geographic cellular automata (CA) model based on partial least squares (PLS) regression (termed PLS-CA) to simulate dynamic urban growth in a geographical information systems (GIS) environment. The PLS method extends multiple linear regression models that are used to define the unique factors driving urban growth by eliminating multicollinearity among the candidate drivers. The k...

2014
Niranjana Kamala Priya Anand Prem Rajan

Phospholipids (PLs) are the important components of cell membrane of all living organisms. The PL or the cell membrane of the bacteria are the least studied subject as it involves large quantities of material and few methods to assay. The novel study was designed to understand if the cell membrane remains same or it changes during different conditions. The bacteria, Acidithiobacillus ferrooxida...

Journal: :Iranian journal of immunology : IJI 2007
Shirin Farjadian Nasrin Kiyanimanesh Abbas Abbaszadegan Mehrdad Lotfazar

BACKGROUND Papillon-Lefevre Syndrome (PLS) is a rare autosomal recessive disorder characterized by diffused palmoplantar keratoderma and severe periodontitis. Increased susceptibility to infections due to impairment of the immune system is considered to be involved in pathoetiology of this disease. OBJECTIVES According to the crucial function of HLA molecules in immune responses and associati...

2011
Xiao-Tong Yuan Shuicheng Yan

We investigate Newton-type optimization methods for solving piecewise linear systems (PLS) with non-degenerate coefficient matrix. Such systems arise, for example, from the numerical solution of linear complementarity problem which is useful to model several learning and optimization problems. In this paper, we propose an effective damped Newton method, namely PLSDN, to find the exact solution ...

2015
Rainer Schlittgen Christian M. Ringle Marko Sarstedt Jan-Michael Becker

Uncovering unobserved heterogeneity is a requirement to obtain valid results when using the structural equation modeling (SEM) method with empirical data. Conventional segmentation methods usually fail in SEM since they account for the observations but not the latent variables and their relationships in the structural model. This research introduces a new segmentation approach to variance-based...

2012
Mikko Rönkkö Kaisa Parkkila Jukka Ylitalo

Motivated by recent critique toward partial least squares path modeling (PLS), we present a research question if the PLS method, as used currently, is at all an appropriate tool for theory testing. We briefly summarize some of the recent critique of the use of PLS in IS as a theory testing tool. Then we analyze the results of 12 PLS analyzes published in leading IS journals testing if these mod...

Journal: :Technometrics 2016
R. Dennis Cook Zhihua Su

Partial least squares (PLS) is a widely used method for prediction in applied statistics, especially in chemometrics applications. However, PLS is not invariant or equivariant under scale transformations of the predictors, which tends to limit its scope to regressions in which the predictors are measured in the same or similar units. Cook et al. (2013) built a connect between nascent envelope m...

2015
Xiaoning Pan Yang Li Zhisheng Wu Qiao Zhang Zhou Zheng Xinyuan Shi Yanjiang Qiao

Model performance of the partial least squares method (PLS) alone and bagging-PLS was investigated in online near-infrared (NIR) sensor monitoring of pilot-scale extraction process in Fructus aurantii. High-performance liquid chromatography (HPLC) was used as a reference method to identify the active pharmaceutical ingredients: naringin, hesperidin and neohesperidin. Several preprocessing metho...

2012
Wei Wu Zhengdong Lu Hang Li

Projection to Latent Structures (PLS), also known as Partial Least Squares, is a method for matching objects from two heterogeneous domains. Although PLS is empirically verified effective for matching queries and documents, its scalability becomes a major hurdle for its application in real-world web search. In this paper, we study a general framework for matching heterogeneous objects, which re...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1995
R P Bruyn J H Koelman D Troost J M de Jong

Three men were initially diagnosed as having primary lateral sclerosis (PLS), but eventually developed amyotrophic lateral sclerosis (ALS) after 7.5, 9, and at least 27 years. Non-familial ALS and PLS might be different manifestations of a single disease or constitute completely distinct entities. The clinical diagnosis of PLS predicts a median survival that is four to five times longer than in...

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