Principal Component Analysis

This paper aims to develop an effective method for reduction and decomposition on large matrices with low required computational resources and fast processing times. Our contribution is to design a PCA-SVD hybrid method that dividesthe feature extraction into two phases: PCA-based size reduction and SVD-based decomposition. In our method, PCA is first applied to a large matrix to extract its important components

5p vibenya 31-12-2024 1 0   Download

Bài giảng "Máy học nâng cao: Dimension reduction and feature selection" cung cấp cho người học các kiến thức: Introduction - dimensionality reduction and feature selection, dimensionality reduction, feature selection. Cuối bài giảng có phần bài tập để người học ôn tập và củng cố kiến thức.

81p abcxyz123_08 11-04-2020 44 6   Download

Bài giảng Khai phá dữ liệu (Data mining): Dimensionality reduction and feature selection, chương này trình bày những nội dung về: introduction to dimensionality reduction and feature selection; principal component analysis (PCA); fisher’s linear discriminant analysis (LDA);... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

81p diepkhinhchau 18-09-2023 14 5   Download

The aims of this study are to (1) review the fundamental knowledge of AR from the perspectives of the Western medicine and CM perspectives, (2) investigate the effectiveness and the safety of CHM used for the management of AR by conducting a systematic review (SR) of the RCTs, (3) elucidate the pharmacological effects and the mechanisms of actions of the five herbs commonly used in the RCTs, and (4) extract the herbs used in retrospective diagnosis of ARlike signs and symptoms from the classical texts, conduct pattern analyses of the herbs used classically by employing principal component a...

255p runthenight04 02-02-2023 7 3   Download

This paper is an attempt to understand and study the post purchase behavior of Hyundai car owners of Aizawl, Mizoram. 170 Hyundai car owners were studied through questionnaire.

7p guineverehuynh 17-06-2020 27 4   Download

The purpose of this study is to identify the main factors influencing consumer’s behavior while travelling to Ukraine. The object of the study was the sample of people who are consumers of touristic services in Ukraine.

11p christabelhuynh 04-06-2020 31 2   Download

In this paper, a method for severity fault diagnosis of ball bearings is presented. The method is based on wavelet packet transform (WPT), statistical parameters, principal component analysis (PCA) and support vector machine (SVM). The key to bearing faults diagnosis is features extraction.

10p tohitohi 19-05-2020 23 1   Download

Fourier transform infrared spectroscopy was performed on human leukemic daunorubicin-sensitiveK562 cells and their multiresistant counterpart derived by selection. Statistical analysis, including variable reduction and linear discrimi-nant analysis was performed on sensitive and multiresistant cells spectra in order to establish a diagnostic tool for multiresistant pattern. For each of the twomethods of data reduction tested [genetic algorithm or principal component analysis (PCA)] discriminationbetween the twocell lineswas found to be possible....

6p research12 23-04-2013 43 2   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Recursive Principal Components Analysis Using Eigenvector Matrix Perturbation

8p sting12 11-03-2012 36 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Principal Component Analysis in ECG Signal Processing

21p dauphong20 10-03-2012 52 8   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Kernel Principal Component Analysis for the Classification of Hyperspectral Remote Sensing Data over Urban Areas

14p dauphong16 20-02-2012 49 7   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Principal components analysis based control of a multi-dof underactuated prosthetic hand

13p panasonic01 12-12-2011 52 5   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: " COPD phenotype description using principal components analysis...

8p toshiba12 20-10-2011 40 4   Download