Publications by Semyon Toybis
HW2DATA624
HW2_DATA624 Author Semyon Toybis Loading Necessary packages Below I load the necessary packages We are required to complete questions 3.1, 3.2, 3.3, 3.4, 3.5, 3.7, 3.8 and 3.9 from chapter 3 of “Forecasting: Principles and Practice” Third Edition by Rob Hyndman and George Athanasopoulos. 3.1 We are tasked with plotting the GDP per capita f...
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DATA 624 HW1
R Markdown Below I load the necessary packages We are tasked with completing questions 2.1, 2.2, 2.3, 2.4, 2.5 and 2.8 from chapter 2 of “Forecasting: Principles and Practice” Third Edition by Rob Hyndman and George Athanasopoulos. Exercise 2.1 Bricks We are tasked with exploring four different time series. Below I start with the Bricks time...
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Final Project DATA 607
Introduction For my final project I conducted sentiment analysis on a company’s annual report and examined the corresponding stock price performance for the following period. I wanted to see if an annual report where management’s commentary was more positive corresponded with a period of stronger stock price performance for the following year (...
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DATA 607 Recommender Systems Discussion
Spotify overview Spotify is a leading music streaming platform that is known for its ability to leverage data in order to recommend songs and playlists to individual users. In fact, Spotify’s data capabilities are one of the reasons it has become the market leader in the space over legacy companies like Pandora and Last.fm and current competitors...
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DATA 607 Assignment 7
Assignment For this assignment, we are required to replicate the sentiment analysis code from Chapter 2 “Sentiment analysis with tidy data” from “Text Mining with R: A Tidy Approach”. Once we replicate this analysis, we are required to extend the analysis by working with a different corpus and incorporating at least one additional sentiment...
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DATA 607 Assignment 6
Purpose The purpose of this assignment is to access the NY Times API, pull JSON data, and transform it into a data frame. Below I load the required packages. library(tidyverse) library(httr2) library(data.table) NY Times API I decided to pull the current NY Times best seller list for hard cover non-fiction books. The URL to pull this information f...
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DATA607Assignment5
Objective The goal of this assignment is to identify three books and for each book capture fields including, title and author. I have also chosen to capture the book genre and type. One of the books is required to have more than one author. I decided to store all authors in one variable (authors) so that a book with multiple authors had one “auth...
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Data 607 Project 2 Global Inflation
Loading Global Inflation Data Below I import the csv file containing MTA ridership data from Github, where I saved the file. library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.4 ✔ readr 2.1.5 ## ✔ forcats 1....
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Data 607 Project 2 - CPI Report
Loading Nobel prize data Below I import the csv file containing Nobel prize data from Github, where I saved the file. library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.4 ✔ readr 2.1.5 ## ✔ forcats 1.0.0 ...
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Data 607 Project 2 Nobel Prize Data
Loading Nobel prize data Below I import the csv file containing Nobel prize data from Github, where I saved the file. library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.4 ✔ readr 2.1.5 ## ✔ forcats 1.0.0 ...
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