Publications by Warner Alexis

DATA 605 - ASSIGNMENT 2

05.02.2024

Problem #1 Proof and Demonstration We have a matrix size m * n. The product of their square \(A^TA\) noted as n * n and \(AA^T\) as matrix of m * n. To show \(A^TA \neq AA^T\) , it means that nn is not equal to mm unless n = m which mean \(A\) is a square. Therefore, for non-square matrices,\(A^TA \neq AA^T\) have different dimensions and can...

1754 sym Python (1333 sym/12 pcs)

Data 607 - Final Project - Hospital Readmission Reduction

14.12.2023

Hospital Readmission Reduction The center for Medicare and Medicaid Services begun to reduce payment to Hospitals for excessive readmissions on October 1rst 2012 as part of the Affordable Care Act. Hospitals’ mission switches strategies to reduce rehospitalization rate and improves quality care so patients don’t come back within 30 days rea...

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DATA 607 - Tidyverse Extended Assignment

03.12.2023

##1. Loading the Tidyverse packages and the data into R: This is Souleymane Doumbia Assignment 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...

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DATA 606 Multiple Regression (Lab9)

22.11.2023

Grading the professor Many college courses conclude by giving students the opportunity to evaluate the course and the instructor anonymously. However, the use of these student evaluations as an indicator of course quality and teaching effectiveness is often criticized because these measures may reflect the influence of non-teaching related char...

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DATA 607 - Document Classification

20.11.2023

Document Classification We are provided with a list of corpus that contains Spam and Ham emails files (https://spamassassin.apache.org/old/publiccorpus/) and instructions on how to download. we prefer to use Studio systematic files download so everyone can run the script. We are going to use the tm package which contains function NLP functions...

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DATA 607 - Sentiment Analysis

13.11.2023

Sentiment Analysis In this exercise, we will provide some the of code written in chapter 2 to do our analysis. We will load a new corpus based on all the books written by ‘Luther, Martin’. # load package library(janeaustenr) library(gutenbergr) library(dplyr) ## ## Attaching package: 'dplyr' ## The following objects are masked from 'pac...

1041 sym R (15974 sym/86 pcs) 9 img

Data 606 - Introduction to linear regression

06.11.2023

The Human Freedom Index is a report that attempts to summarize the idea of “freedom” through a bunch of different variables for many countries around the globe. It serves as a rough objective measure for the relationships between the different types of freedom - whether it’s political, religious, economical or personal freedom - and other...

10969 sym R (5508 sym/35 pcs) 9 img

DATA 607 Web APIs

05.11.2023

New York Times Books API I choose the book api from New York Times that contains information 15 books. First we use a API Tester to see all the revelant information about the API and what I can get a view where to get the information I need. I need to contruct a table from API available information. Thi is API tester from Chrome library(jsonli...

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DATA 606 - Project Proposal

30.10.2023

Data Preparation We read the data directly from espn website. the steps below require package for web scrapping to get the HTML table. We collect Premiere League Seasons data from 2018-2022. All Teams in the played 38 matches every season. # load data from the web using web scrapping package library(rvest) library(tidyverse) library(vtable) ...

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DATA 606 - Inference for Categorical Data

22.10.2023

Getting Started Load packages In this lab, we will explore and visualize the data using the tidyverse suite of packages, and perform statistical inference using infer. The data can be found in the companion package for OpenIntro resources, openintro. Let’s load the packages. library(tidyverse) library(openintro) library(infer) The data Yo...

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