نتایج جستجو برای: keywords principal component analysis pca transform

تعداد نتایج: 4916949  

2002
Yiu-ming Cheung

The recent paper (Cheung 2001) has studied the blind identification of Gaussian source process through a general temporal independent component analysis (ICA) approach named dual autoregressive modelling. It is actually a temporal extension of the classical principal component analysis without considering the principal order of the components. In this paper, we will further show the identifiabl...

Journal: :future of medical education journal 0
masoumeh nazari chamak student research assembly, kerman university of medical science, kerman, iran khodadad sheikhzadeh regional knowledge hub and who collaborating centre for hiv surveillance, institute for futures studies in health, kerman university of medical sciences, kerman, iran ali akbar haghdoost regional knowledge hub for hiv/aids surveillance, research centre for modelling in health, institute for future studies in health, kerman university of medical sciences, kerman, iran

background: in order to check the practicality of classification of universities of medical sciences (umss) based on their infrastructures, and scientific contributions, this study explored the most appropriate indicators to measure the size and productivity of umss. methods: in the first phase, we approached a group of experts who had a deep experience in the management of umss and in the mini...

2014
K. Marina Singha Sudipta Roy

Face Recognition is one of the challenging tasks faced till date in the field of computer vision and pattern recognition. A robust face recognition system is essential for proper and accurate face recognition. Facial feature extraction is an important stage of face recognition process as it includes the important information required for face recognition. A good feature extraction algorithm hel...

2015
Shikha Sharma Anupam Agarwal

In recent years, the popularity of digital video based applications is accompanied by the need of copyright protection, to prevent illicit copying and distribution of digital information. Copyright protection inserts authentication data such as ownership information and logo in the digital media, without affecting its perceptual quality. In case of any dispute, authentication data is extracted ...

2013
Fujin Zhong

Traditional bidirectional two-dimension (2D) principal component analysis ((2D)PCA-L2) is sensitive to outliers because its objective function is the least squares criterion based on L2-norm. This paper proposes a simple but effective L1-norm-based bidirectional 2D principal component analysis ((2D)PCA-L1), which jointly takes advantage of the merits of bidirectional 2D subspace learning and L1...

2015
Asuman Günay Vasif V. Nabiyev

This paper proposes a novel age estimation method Global and Local feAture based Age estiMation (GLAAM) relying on global and local features of facial images. Global features are obtained with Active Appearance Models (AAM). Local features are extracted with regional 2D-DCT (2dimensional Discrete Cosine Transform) of normalized facial images. GLAAM consists of the following modules: face normal...

Journal: :journal of paramedical sciences 0
mahdieh khalili department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran hamid alavi majd department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran soheila khodakarim department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran batool ahadi mohsen hamidpour department of hematology, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran

the aim of this study was to propose a method for improving the power of recognition and classification of thromboembolic syndrome based on the analysis of ‎ gene expression data using artificial neural networks. the studied method was performed on a dataset which contained data about 117 patients admitted to a hospital in durham in 2009. of all the studied patients, 66 patients were suffering ...

Journal: :International Journal of Computer Applications 2014

2008
Dinesh Kumar

Principal Component Analysis (PCA) and Independent Component Analysis (ICA) are the techniques that deal with extracting the independent components from linear mixtures of Gaussian and non-Gaussian data at the input respectively. PCA is a classical method that deals with the second order statistics of data. It is also known as Karhunen-Loeve Transform or the Hotelling Transform in some applicat...

1998
Chuan Wang Jose C. Principe

An on-line transform domain Least Mean Square (LMS) algorithm based on a neural approach is proposed. A temporal Principal Component Analysis (PCA) network is used as an orthonormalization layer in the transform domain LMS filter. Since PCA learning is an on-line learning algorithm, an on-line transform domain LMS filter can be easily implemented. Moreover, a modified Kalman estimation, which c...

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