[R Experiment.9] Principal Component and Factor Analysis

The solution is not single. The following methods have Xuan Zi's personal preferences and are therefore only for reference.If there are any errors, please correct them in the comments area! 9.1 Discuss the main structure of urban industry with principal component method.Table 9-4 is the thirteeUTF-8...

Posted by zild1221 on Mon, 31 May 2021 01:39:03 +0930

[R experiment. 5] R program design

The solution is not single. The following method has xuanzi's personal preference, so it is only for reference. If there are any mistakes, please correct them in the comments section! 5.1 write an R program (function). Input an integer n, if n < = 0, then terminate the operation, and output a sUTF-8...

Posted by JsusSalv on Mon, 31 May 2021 04:45:14 +0930

R basic language learning notes

Recently, I'm looking at some R languages. By the way, I'll record the basic operations of R language. It's convenient to find them in the future R language is more used in data analysis, which is a more characteristic language The main contents of the study are data type data structure functioUTF-8...

Posted by mananx on Fri, 06 Aug 2021 04:59:30 +0930

Chapter V assignment 2

I 1. Define int, n = 0, i; 2. Assign 0 to i; 3. Judge I < 3; 4. True: n + +; Steering 5; False: end; 5. Judge the value of n + +; 6.n=0: 7. True: n=1? False: n=1?; 8. True: n=2; False: n=2; 9. True: n=3; False: n=3; 10. True: output the value of n + +; Steering 11; False: steering 11; 11.i++； UTF-8...

Posted by justgrafx on Sat, 11 Dec 2021 02:03:12 +1030

Error: Failed to install 'unknown package' from GitHub: HTTP error 403

Recently, when downloading packages on github, there was a problem of API download rate limitation. error 403 was returned and github was required_ Token() cancels the api rate restriction. This is because github will scan the dependent programs to be installed. If the number exceeds its api raUTF-8...

Posted by CerealBH on Tue, 21 Dec 2021 13:51:34 +1030

R language and data mining ⑤ advanced drawing tools [lattice package] [ggplot2] [interactive]

Book: R language and data mining Author: Zhang Liangjun Press: Machinery Industry Press ISBN: 9787111540526 This book is produced and distributed electronically by Hangzhou yunyuedu Network Co., Ltd. authorized by Beijing Huazhang Graphic Information Co., Ltd Copyright · infringement must be inUTF-8...

Posted by zahidraf on Fri, 31 Dec 2021 16:42:08 +1030

C4 of 2021-07-28 data mining algorithm 5 algorithm

Data mining algorithm C4 5 algorithm C4.5 algorithm is a decision tree, which is implemented on the basis of ID3 to solve the classification problem. It belongs to supervised learning. The goal is to judge the category label of the given tuple according to the known samples - each sample has muUTF-8...

Posted by altexis on Tue, 04 Jan 2022 07:56:04 +1030

[R language] Experiment 4 data analysis

Catalogue of series articles Experiment 1 R language data structure, data import and data processing Experiment 2 basic data processing Experiment 3 data visualization Experiment 4 data analysis experimental data 1. Hospital data set The data is the basic information about some hospitals. The dUTF-8...

Posted by Idri on Wed, 05 Jan 2022 02:02:24 +1030

Using R to construct confidence intervals in Financial Econometrics

Recently, many students asked me how to build confidence intervals, so let's briefly introduce the learning results Generally speaking, what we need to build confidence intervals is unknown numbers. All we get are estimated or predicted values of calculated values. For example, calculate the coUTF-8...

Posted by dream.scape on Sat, 15 Jan 2022 17:25:05 +1030

GCTA learning 6 | GCTA calculating GRM matrix (kinship matrix)

GRM matrix, full name: genetic relationship matrix (GRM). GCTA calculates GRM in two ways Default Yang, – make GRM alg 0Van's method: – make GRM alg 1 GCTA calculates GRM in two forms Default binary form: - make GRM, or -- make GRM binText format (triplet): – make GRM GZ 1. GCTA calculation GRMUTF-8...

Posted by aquaman1856 on Tue, 18 Jan 2022 04:46:48 +1030