Publications by Marley Myrianthopoulos
DATA 624 HW 9
Exercise 8.1 Recreate the simulated data from Exercise 7.2: # Code provided by the textbook library(mlbench) set.seed(200) simulated <- mlbench.friedman1(200, sd = 1) simulated <- cbind(simulated$x, simulated$y) simulated <- as.data.frame(simulated) colnames(simulated)[ncol(simulated)] <- "y" 8.1(a) Fit a random forest model to all of the predict...
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DATA 624 HW 2
library(tsibble) ## Warning: package 'tsibble' was built under R version 4.3.3 ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following objects are masked from 'package:base': ## ## intersect, setdiff, union library(fpp3) ## Warning: p...
7980 sym R (8582 sym/56 pcs) 31 img
DATA 624 HW 3
library(tsibble) ## Warning: package 'tsibble' was built under R version 4.3.3 ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following objects are masked from 'package:base': ## ## intersect, setdiff, union library(fpp3) ## Warning: p...
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DATA 624 HW 7
set.seed(31415) Exercise 6.2 Developing a model to predict permeability (see Sect. 1.4) could save sig- nificant resources for a pharmaceutical company, while at the same time more rapidly identifying molecules that have a sufficient permeability to become a drug: 6.2(a) Start R and use these commands to load the data: library(AppliedPredictiveM...
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DATA 624 HW 8
library(AppliedPredictiveModeling) library(caret) ## Loading required package: ggplot2 ## Loading required package: lattice 7.2 Friedman (1991) introduced several benchmark data sets create by simulation. One of these simulations used the following nonlinear equation to create data: \(22 y=10sin(πx1x2)+20(x3−0.5) +10x4+5x5+N(0,σ)\) where the \...
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DATA 624 Project 1
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 ✔ tidyr 1.3.1 ## ...
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DATA 624 HW 6
library(tsibble) ## Warning: package 'tsibble' was built under R version 4.3.3 ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following objects are masked from 'package:base': ## ## intersect, setdiff, union library(fpp3) ## Warning: p...
9798 sym R (12745 sym/94 pcs) 30 img
DATA 624 HW 5
# Import required libraries and data library(tsibble) ## Warning: package 'tsibble' was built under R version 4.3.3 ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following objects are masked from 'package:base': ## ## intersect, setdi...
7968 sym R (14621 sym/88 pcs) 16 img
DATA 624 HW 4
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 ✔ tidyr 1.3.1 ## ...
6469 sym R (8193 sym/44 pcs) 23 img
DATA 624 HW 1
library(tsibble) ## Warning: package 'tsibble' was built under R version 4.3.3 ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following objects are masked from 'package:base': ## ## intersect, setdiff, union library(fpp3) ## Warning: p...
4834 sym R (8333 sym/76 pcs) 30 img 9 tbl