نتایج جستجو برای: راهکارهای اجرای pca

تعداد نتایج: 72364  

2014
Sourik S. Ganguly Xiaohong Li Cindy K. Miranti

Prostate cancer (PCa) is the second leading cause of cancer death in men worldwide. Most PCa deaths are due to osteoblastic bone metastases. What triggers PCa metastasis to the bone and what causes osteoblastic lesions remain unanswered. A major contributor to PCa metastasis is the host microenvironment. Here, we address how the primary tumor microenvironment influences PCa metastasis via integ...

2016
Ramesh Kumar Vimal Chand

The selection of appropriate wavelets is an important target for any application. In this paper Face recognition has been performed using Principal component analysis (PCA), Gaussian based PCA and Gabor based PCA. PCA extracts the relevant information from complex data sets and provides a solution to reduce dimensionality. PCA is based on Euclidean distance calculation which is minimized by app...

Journal: :Briefings in bioinformatics 2011
Shuangge Ma Ying Dai

In analysis of bioinformatics data, a unique challenge arises from the high dimensionality of measurements. Without loss of generality, we use genomic study with gene expression measurements as a representative example but note that analysis techniques discussed in this article are also applicable to other types of bioinformatics studies. Principal component analysis (PCA) is a classic dimensio...

2017
Qianqian Wang Quanxue Gao Xinbo Gao Feiping Nie

Recently, many l1-norm based PCA methods have been developed for dimensionality reduction, but they do not explicitly consider the reconstruction error. Moreover, they do not take into account the relationship between reconstruction error and variance of projected data. This reduces the robustness of algorithms. To handle this problem, a novel formulation for PCA, namely angle PCA, is proposed....

ژورنال: مدیریت شهری 2017
عاشری, امامعلی,

توسعه روستایی فرایند پیچیده ای در راستای بهبود افزایش استاندارد زندگی مردم در روستاست. شناسایی امکانات روستایی در بخشهای مختلف اقتصادی، اجتماعی، فرهنگی، زیربنایی مناطق روستایی اولین گام در برنامه ریزی پایداری و توسعه روستایی است. با توجه به وابستگی زیاد ارومیه به اقتصاد روستایی، لزوم توجه به توسعه پایدار روستایی اهمیت مضاعفی دارد. هدف از این مطالعه، بررسی طبقات و میزان برخورداری روستاهای دهستان...

Journal: :Pattern Recognition Letters 2005
Liwei Wang Xiao Wang Xuerong Zhang Jufu Feng

The state-of-the-art in human face recognition is the subspace methods originated by the Principal Component Analysis (PCA), the Eigenfaces of the facial images. Recently, a technique called Two-Dimensional PCA (2DPCA) was proposed for human face representation and recognition. It was developed for image feature extraction based on 2D matrices as opposed to the standard PCA, which is based on 1...

2001
J. Ross Beveridge Kai She

This short paper updates results presented in two previous publications, “ A Nonparametric Statistical Comparison of Principal Component and Linear Discriminant Subspaces for Face Recognition” presented at CVPR 2001 and “Parametric and Nonparametric Methods for the Statistical Evaluation of Human ID Algorithms” presented at the Workshop on the Empirical Evaluation of Computer Vision Algorithms ...

Prostate cancer (PCa) is the most common type of cancer among men over 60 years old. The aggressiveness and mortality of PCa can be correlated with obesity. Adipose tissue-derived cytokines such as adiponectin may explain the correlation between PCa and obesity. Since the correlation between adiponectin and aggressive PCa is still not fully evaluated, we aimed to investigate the probable role o...

Journal: :European urology 2006
Abraham Morgentaler

OBJECTIVES To review the historical origins and current evidence for the belief that testosterone (T) causes prostate cancer (pCA) growth. METHODS Review of the historical literature regarding T administration and pCA, as well as more recent studies investigating the relationship of T and pCA. RESULTS In 1941 Huggins and Hodges reported that marked reductions in T by castration or estrogen ...

2017
Xiaosong Qian Sujuan Feng Dawei Xie Dalin Feng Yihang Jiang Xiaodong Zhang

Prostate cancer (PCa) is a common malignant tumor and the second leading cause of morbidity and mortality in men worldwide. Considering the prevalence and effects of PCa in males, an understanding of the molecular mechanisms underlying PCa tumorigenesis are essential and may provide novel therapeutic strategies for treating PCa. Bloom syndrome protein (BLM) is a member of the RecQ helicase fami...

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