Publications by Shaya Engelman
C21 Data 605 Week 2
C21 Consider the subspace \(W\) of the vector space of \(2 \times 2\) matrices, \(M_{22}\), defined by the basis vectors: \[ w_1 = \begin{bmatrix} 2 & 1 \\ 3 & -1 \end{bmatrix} \] \[ w_2 = \begin{bmatrix} 4 & 0 \\ 2 & 3 \end{bmatrix} \] \[ w_3 = \begin{bmatrix} -3 & 1 \\ 2 & 1 \end{bmatrix} \] Is \(C = \begin{bmatrix} -3 & 3 \\ 6 & -4 \end{bmat...
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Data 607 Final Project
Introduction In many big cities, traffic is a big headache. Too many cars not only make the air dirty but also mess with our climate. Especially in busy places like New York City, it takes a lot of time to travel short distances because of all the traffic. One way to tackle these problems is by encouraging people to use bicycles for transportat...
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Week 10 data 607
Assignment Prompt In Text Mining with R, Chapter 2 looks at Sentiment Analysis. In this assignment, you should start by getting the primary example code from chapter 2 working in an R Markdown document. You should provide a citation to this base code. You’re then asked to extend the code in two ways: Work with a different corpus of your choo...
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Data 607 Week 9
Assignment - Web APIs The New York Times web site provides a rich set of APIs, as described here: https://developer.nytimes.com/apis You’ll need to start by signing up for an API key. Your task is to choose one of the New York Times APIs, construct an interface in R to read in the JSON data, and transform it into an R DataFrame: library(tidyv...
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data 607 week 8
Assignment promp: Pick three of your favorite books on one of your favorite subjects. At least one of the books should have more than one author. For each book, include the title, authors, and two or three other attributes that you find interesting. Take the information that you’ve selected about these three books, and separately create three...
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Data 607Project 2
Deaths of Children Under 5 Year of Age There are many causes of death for children under the age of 5 across the world. The data source was the Our World in Data and specifically, which was a worldwide longitudinal study of childhood deaths. The study began in 1990 and ended in 2020. The study included all the countries and United Nations recog...
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Data 607 Project 2b
This dataset was provided to me by David Greer and we worked together on this project. The data is a collection of terror attacks from 1970-2021 around the world broken down by attack method. For this project I wanted to summarise the terror attacks specifically in the Middle East and see the relative amounts between Middle Eastern countries. ...
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Data 607 Project 2c
library(RCurl) library(dplyr) ## ## Attaching package: 'dplyr' ## The following objects are masked from 'package:stats': ## ## filter, lag ## The following objects are masked from 'package:base': ## ## intersect, setdiff, setequal, union library(stringr) library(tidyverse) ## ── Attaching core tidyverse packages ────�...
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Data 607 Project 2a
library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.3 ✔ readr 2.1.4 ## ✔ forcats 1.0.0 ✔ stringr 1.5.0 ## ✔ ggplot2 3.4.3 ✔ tibble 3.2.1 ## ✔ lubridate 1.9.2 ✔ tidyr 1.3.0...
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Data 607 Assignment 4
airlines <- read.csv("https://raw.githubusercontent.com/Shayaeng/Data607/main/Assignment5/airlines.csv") print(airlines) ## X X.1 Los.Angeles Phoenix San.Diego San.Francisco Seattle ## 1 ALASKA on time 497 221 212 503 1,841 ## 2 delayed 62 12 20 102 305 ## 3 ...
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