Publications by yina qiao
624hw2partial
library(AppliedPredictiveModeling) library(mice) # impute NAs library(visdat) # missing value library(e1071) library(caret) library(dplyr) library(tidyr) library(mlbench) # chp 7 and 8 library(kableExtra) library(randomForest) library(party) library(gbm) library(Cubist) library(rpart) library(RANN) library(pls) library(earth) library(kernlab) 6.3 ...
1250 sym R (19084 sym/62 pcs) 11 img
624hw2partial
library(AppliedPredictiveModeling) library(mice) # impute NAs library(visdat) # missing value library(e1071) library(caret) library(dplyr) library(tidyr) library(mlbench) # chp 7 and 8 library(kableExtra) library(randomForest) library(party) library(gbm) library(Cubist) library(rpart) library(RANN) library(pls) library(earth) library(kernlab) 6.3 ...
1250 sym R (19089 sym/62 pcs) 11 img
S05
library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) Load Data data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S05 <- data %>% mutate(date = a...
2079 sym R (10430 sym/51 pcs) 14 img
S03
Load Data library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S03 <- data %>% mutate(date = a...
2186 sym R (16213 sym/49 pcs) 14 img
S06
Load Data library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S06 <- data %>% mutate(date = a...
2027 sym R (16623 sym/56 pcs) 14 img
S04
Load Data library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S04 <- data %>% mutate(date = a...
2056 sym R (16433 sym/48 pcs) 12 img
S01
Load Data library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S01 <- data %>% mutate(date = a...
2246 sym R (15714 sym/46 pcs) 10 img
S02
library(readxl) library(dplyr) library(imputeTS) library(ggplot2) library(forecast) library(tseries) library(gridExtra) library(kableExtra) library(scales) library(openxlsx) library(urca) library(purrr) Load Data data <- read.csv("Data Set for Class.csv", stringsAsFactors = FALSE) Data Cleaning and Preprocessing S02 <- data %>% mutate(date = a...
2014 sym R (16444 sym/45 pcs) 10 img
DATA605-W15D
12.2 exercise 15 To evaluate the limit of the function \(\frac{x^2 - y^2}{x^2 + y^2}\) as \((x, y)\) approaches \((0, 0)\) along different paths, we will look at two specific paths: (a) Along the path \(y = 0\) When \(y = 0\), the function simplifies as follows: \[ \frac{x^2 - y^2}{x^2 + y^2} = \frac{x^2 - 0^2}{x^2 + 0^2} = \frac{x^2}{x^2} = 1 \] ...
1522 sym
DATA 605 W14d-YINA QIAO
8.8 exercise 26 To create the Taylor series of the function \(f(x) = e^{-x}\) we utilize the Taylor series expansion formula for the exponential function. The Taylor series for \(e^x\) at \(x = 0\) is given by: \[ e^x = \sum_{n=0}^{\infty} \frac{x^n}{n!} = 1 + x + \frac{x^2}{2!} + \frac{x^3}{3!} + ... \] To create the Taylor series for \(f(x) = e^{...
536 sym