Publications by Eric Lehmphul
DATA 622: Homework 4
Code Show All Code Hide All Code DATA622: Homework 4 DATA622: Homework 4 Objective Data Source Read in Data Glimpse at Data Normalize Data Explore Data Frequency of Labels Explore Images Machine Learning XG Boost CNN Which Performed Better? (XG Boost vs CNN) Conclusion Eric Lehmphul 12/12/2022 library(tidyverse) library(te...
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DATA606: Final Project
Code Show All Code Hide All Code Final Project: Cardiovascular Disease Final Project: Cardiovascular Disease Abstract Libraries Part 1 - Introduction Part 2 - Data Part 3 - Exploratory data analysis Part 4 - Logistic Regression Part 5 - Conclusion References Eric Lehmphul 11/30/2021 Abstract Cardiovascular disease is a major concern arou...
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Project 4: Document Classification
DATA 607: Project 4 DATA 607: Project 4 Project Task Overview Steps taken to Classify Emails as Ham or Spam Obtain Data Read and Store text in the Files Preprocess the emails to more easily classify Creating Training and Testing Data Classify Emails Conclusion Eric Lehmphul 11/13/2021 library(tidyverse) library(R.utils) library(tm) lib...
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DATA 607: Discussion 11
Pandora Music Pandora is a popular music streaming service similar to Spotify, Amazon Music, and Apple Music. Pandora offers a highly personalized listening experience to each user through the Music Genome Project and Podcast Genome Project (“About Pandora”). Scenario Analysis Who are Pandora’s target users? Pandora targets anyone who enj...
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DATA 606: Project Proposal
Data Preparation Retrieved dataset from Kaggle: https://www.kaggle.com/sulianova/cardiovascular-disease-dataset. It is a dataset relating to cardiovascular disease and relative variables of interest. library(tidyverse) library(GGally) # load data url <- "https://raw.githubusercontent.com/SaneSky109/DATA606/main/Data_Project/Data/cardio_train....
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DATA 607: Data Science in Context
DATA 607: Data Science in Context - K Nearest Neighbors Algorithm Eric Lehmphul 10/27/2021 KNN Supervised learning algorithm used in both classification and regression problems In classification problems, new data points will be classified in a particular class In regression problems, new data points will be labeled based on the average va...
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DATA 607 Tidyverse CREATE: stringr
Using stringr to handle Character and String Data Overview This is a brief overview of the stringr package from Hadley Wickham’s Tidyverse. Strings and characters are frequent data types that a data scientist encounters. The stringr package simplifies data manipulation involving string and character data types. Below are a handful of useful fu...
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Team 2: Project 3 Part 1
Team Collaboration Our team decided to use Slack as the main method of written communication, Zoom as a means to carry out team meetups, and Asana as a way to assign tasks to individuals and set deadlines. Code and documents will be shared through two github repositories: https://github.com/baruab/msdsrepo/tree/main/Project_3_607 https://github....
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DATA 607: Project 2
Introduction The goal of this assignment is to provide practice in preparing different datasets for downstream analysis work. The three datasets were chosen from the Discussion 5 discussion board. Student Testing This dataset was provided by me, Eric Lehmphul. It is a toy dataset that I created which holds student name, student’s testing score...
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Week 5 HW
Overview In this assignment, I cleaned the untidy COVID data set provided and performed the analysis necessary to answer the questions provided in the spreadsheet. Code Data Cleaning and Preprocessing Read the data from github: library(tidyverse) ## -- Attaching packages --------------------------------------- tidyverse 1.3.1 -- ## v ggplot2 3....
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