Publications by WingKi Yu
A7
1 Set Up # import libraries library(C50) library(psych) library(RWeka) library(caret) ## Loading required package: ggplot2 ## ## Attaching package: 'ggplot2' ## The following objects are masked from 'package:psych': ## ## %+%, alpha ## Loading required package: lattice library(rminer) ## Warning in rgl.init(initValue, onlyNULL): RGL: unable t...
3659 sym R (280367 sym/227 pcs) 25 img 5 tbl
A6_Yu_WingKi
1 Load packages, prepare and inspect the data # 1A library(C50) library(psych) library(RWeka) library(caret) ## Loading required package: ggplot2 ## ## Attaching package: 'ggplot2' ## The following objects are masked from 'package:psych': ## ## %+%, alpha ## Loading required package: lattice library(rminer) ## Warning in rgl.init(initValue, o...
1392 sym R (67395 sym/59 pcs) 2 img
A4_Yu_WingKi
1 Set up, data import, data exploration, data partitioning, and inspection code # 1A library(rmarkdown) library(psych) library(rpart) library(RWeka) library(caret) ## Loading required package: ggplot2 ## ## Attaching package: 'ggplot2' ## The following objects are masked from 'package:psych': ## ## %+%, alpha ## Loading required package: latt...
1498 sym R (70186 sym/68 pcs) 1 img 9 tbl
A3_Yu_WingKi
# 1A library(e1071) library(psych) library(caret) ## Loading required package: ggplot2 ## ## Attaching package: 'ggplot2' ## The following objects are masked from 'package:psych': ## ## %+%, alpha ## Loading required package: lattice library(rminer) library(rmarkdown) library(tidyverse) ## ── Attaching core tidyverse packages ────...
1159 sym R (8305 sym/50 pcs) 1 img 5 tbl
A2_Yu_WingKi
1 Set Up # 1 library(C50) library(caret) ## Loading required package: ggplot2 ## Loading required package: lattice library(rminer) library(rmarkdown) library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.1 ✔ readr ...
1676 sym R (24008 sym/135 pcs) 1 img
CD in 2014
# set up library(rmarkdown) library(psych) library(scatterplot3d) library(caret) ## Loading required package: ggplot2 ## ## Attaching package: 'ggplot2' ## The following objects are masked from 'package:psych': ## ## %+%, alpha ## Loading required package: lattice library(tidyverse) ## ── Attaching core tidyverse packages ────�...
1105 sym R (14878 sym/65 pcs) 17 img
A1_I_Yu_WingKi
1 Libraries library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.1 ✔ readr 2.1.4 ## ✔ forcats 1.0.0 ✔ stringr 1.5.0 ## ✔ ggplot2 3.4.2 ✔ tibble 3.2.1 ## ✔ lubridate 1.9.2 ✔ tidyr ...
4512 sym R (78401 sym/127 pcs) 18 img
Bioimplants
# Library library(tidyverse) library(dplyr) library(janitor) #clean_names() bi <- read_csv("bioimplants.csv") glimpse(bi) ## Rows: 1,470 ## Columns: 29 ## $ age <dbl> 41, 49, 37, 33, 27, 32, 59, 30, 38, 36, 35,… ## $ business_travel <chr> "Travel_Rarely", "Travel_Frequently", "Trav… ## $ department ...
5916 sym R (118237 sym/37 pcs)
Document
Table of Content: 1. Introduction 2. Import & Check Dataset 3. Exploratory Data Analysis (EAD) 4. Data Modeling 5. Cross Validation 6. Submission 7. Conclusion Introduction: Developing regression models that accurately predict the sale price of residential homes in Ames, Iowa based on various features (such as square footage and location) is the ob...
4195 sym R (61872 sym/139 pcs) 4 img
Document
Q1 Plot price against sqft with a summary linear regression line. Determine the equation of the summary line in the plot (by fitting the corresponding regression model) and interpret the coefficients for the intercept and sqft in the equation. In this and subsequent questions interpret means: write down in concrete terms what each coefficient says ...
6277 sym 5 img