Publications by Sung Lee
Data 607 Week 7 Assignment
Assignment on RPubs Rmd on Github Introduction This week’s assignment is to work with the web uibiquitous forms of html, xml, and json. This assignment will work with and identify differences between three files: books.html, books.xml, and books.json. The books in the brief inventory are from the dystopian science fiction genre. One book Look...
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Data 605 Final Project
The YouTube video of the presentation is here Problem 1 Using R, generate a random variable X that has 10,000 random uniform numbers from 1 to N, where N can be any number of your choosing greater than or equal to 6. Then generate a random variable Y that has 10,000 random normal numbers with a mean of \(\mu = \sigma = (N+1)/2\). set.seed(2020) ...
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Data 605 Final Project
Problem 1 Using R, generate a random variable X that has 10,000 random uniform numbers from 1 to N, where N can be any number of your choosing greater than or equal to 6. Then generate a random variable Y that has 10,000 random normal numbers with a mean of \(\mu = \sigma = (N+1)/2\). set.seed(2020) N <- 8 # mu = sigma = (N + 1)/2 mu <- (N+1)...
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Data 608 Homework 2
Introduction¶Author: Sung Lee Semester: Fall 2021 This Jupyer Notebook is for my Data 608 course. GitHub Link In [1]: # The following lines were added to get the Jupyter Notebook working in Colab !pip install datashader !pip install pyproj # Be sure to update IPython otherwise GeoJSON will not work # Also be sure to restart the runtime envir...
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Data 608 Homework 1
** Original source for this assignment is from https://github.com/charleyferrari/CUNY_DATA_608/blob/master/module1/hw1.rmd Principles of Data Visualization and Introduction to ggplot2 I have provided you with data about the 5,000 fastest growing companies in the US, as compiled by Inc. magazine. lets read this in: inc <- read.csv("https://raw.gi...
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Data 621: Homework 1
Introduction The purpose of this homework assignment is to build a multiple linear regression model on the training data to predict the number of wins for the team given in the data set. Data Exporation Describe the size and the variables in the moneyball training data set. Consider that too much detail will cause a manager to lose interest whil...
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Data 621 Homework 2
Overview In this homework assignment, you will work through various classification metrics. You will be asked to create functions in R to carry out the various calculations. You will also investigate some functions in packages that will let you obtain the equivalent results. Finally, you will create graphical output that also can be used to evalu...
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Data 622 Homework 1
Introduction This assignment is the first homework for Data 622. The following is the assignment: Visit the following website and explore the range of sizes of this dataset (from 100 to 5 million records). https://eforexcel.com/wp/downloads-18-sample-csv-files-data-sets-for-testing-sales/ Based on your computer’s capabilities (memory, CPU), s...
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Data 622 Homework 2
Assignment Based on the latest topics presented, bring a dataset of your choice and create a Decision Tree where you can solve a classification or regression problem and predict the outcome of a particular feature or detail of the data used. Switch variables to generate 2 decision trees and compare the results. Create a random forest for regr...
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Data 622 Homework 4
RPubs Link GitHub Link Assignment You get to decide which dataset you want to work on. THe data set must be different You can work on a problem from your work, or something you are interested in. You may also obtain a dataset from sites such as Kaggle, Data.Gov, Census Bureau, USGS or other open data portal. Select one of the methodologies...
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