Publications by Jlok17
Project 2 Data 624
Libraries Used: library(tidyverse) library(fpp3) library(randomForest) library(ggplot2) library(caret) library(AppliedPredictiveModeling) library(e1071) library(caTools) library(gbm) library(mlbench) library(ipred) library(class) library(kernlab) library(partykit) library(rpart) library(rpart.plot) library(readxl) library(corrplot)...
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Test12
Import Data: library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.4 ✔ readr 2.1.5 ## ✔ forcats 1.0.0 ✔ stringr 1.5.1 ## ✔ ggplot2 3.5.1 ✔ tibble 3.2.1 ## ✔ lubridate 1.9.3 ✔ ti...
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Homework 10 Data 624
Imagine 10000 receipts sitting on your table. Each receipt represents a transaction with items that were purchased. The receipt is a representation of stuff that went into a customer’s basket - and therefore ‘Market Basket Analysis’. That is exactly what the Groceries Data Set contains: a collection of receipts with each line representing...
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Story 6 Data 608
Objective The United Nations Food and Agriculture Organization publication. The State of Food Security and Nutrition in the world 2022 might lead one to the conclusion that its an elsewhere problem that the people who are suffering malnutrition and starvation are elsewhere not in our backyard. For this assignment you will need to take a closer ...
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Homework 9 Data 624
Libraries Used library(AppliedPredictiveModeling) library(tidyverse) library(mlbench) library(randomForest) library(caret) library(party) library(kernlab) library(gbm) library(Cubist) library(rpart) library(ranger) library(partykit) Question 8.1 Recreate the simulated data from Exercise 7.2: set.seed(200) simulated <- mlbench.friedman1...
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Homework 8 Data624
Libraries Used: library(caret) library(nnet) library(earth) library(kernlab) library(mlbench) library(AppliedPredictiveModeling) library(RANN) library(dplyr) Question 7.2 Friedman (1991) introduced several benchmark data sets create by simulation. One of these simulations used the following nonlinear equation to create data: \[y = 1-sin(...
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Homework 7 Data624
library(AppliedPredictiveModeling) library(caret) library(caTools) library(corrplot) library(tidyverse) library(pls) library(arm) Question 6.2 Developing a model to predict permeability (see Sect. 1.4) could save significant resources for a pharmaceutical company, while at the same time more rapidly identifying molecules that have a suffic...
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Project 1 Data 624
Libraries Used: library(tidyverse) library(readxl) library(fpp3) library(fable) library(purrr) library(zoo) library(openxlsx) Part A In part A, I want you to forecast how much cash is taken out of 4 different ATM machines for May 2010. The data is given in a single file. The variable ‘Cash’ is provided in hundreds of dollars, other tha...
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Homework 6 Data 624
library(fpp3) Question 1 A. Explain the differences among these figures. Do they all indicate that the data are white noise? The differences between the figures starts with that they are all ACFs for a different amount of random numbers. They differ with the amount of random numbers each of the graphs represent, as well as, we can see that pe...
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Story 4 Data 608
Objective: I have introduced the term “Data Practitioner” as a generic job descriptor because we have so many different job role titles for individuals whose work activities overlap including Data Scientist, Data Engineer, Data Analyst, Business Analyst, Data Architect, etc. For this story we will answer the question, “How much do we get ...
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