Publications by Alain Kuiete Tchoupou
Document
Load the libraries library(recommenderlab) # Matrix/recommender functions ## Warning: package 'recommenderlab' was built under R version 3.6.3 ## Loading required package: Matrix ## Loading required package: arules ## Warning: package 'arules' was built under R version 3.6.3 ## ## Attaching package: 'arules' ## The following objects are masked...
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Unsupervised Learning
Loading the Required Libraries library(tidyverse) ## -- Attaching packages ----------------------------------------------- tidyverse 1.2.1 -- ## v ggplot2 3.2.1 v purrr 0.3.2 ## v tibble 2.1.3 v dplyr 0.8.3 ## v tidyr 0.8.3 v stringr 1.4.0 ## v readr 1.3.1 v forcats 0.4.0 ## -- Conflicts -------------------------------...
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Computation of Taylor Series
Assignment 14 Computation of Talor Series \(\frac{1}{1-x} = \sum _{ n=0 }^{ \infty }{ { x }^{ n } } = 1+x+x^2+x^3+...\) Interval of convergence \((-1, 1)\) x <- 0.01 firsterm <- 1/(1-x) firsterm ## [1] 1.010101 secondterm <- 0 for (n in 0:1000) { secondterm <- secondterm + x**n } secondterm ## [1] 1.010101 \({e}^{x}=\sum _{ n=0 }^{ \infty...
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Logistic Regression
Baby weights, Part I. (9.1, p. 350) The Child Health and Development Studies investigate a range of topics. One study considered all pregnancies between 1960 and 1967 among women in the Kaiser Foundation Health Plan in the San Francisco East Bay area. Here, we study the relationship between smoking and weight of the baby. The variable smoke is c...
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Connection Between DataBases
What is NoSQL? NoSQL encompasses a wide variety of different database technologies that were developed in response to the demands presented in building modern applications: Developers are working with applications that create massive volumes of new, rapidly changing data types — structured, semi-structured, unstructured and polymorphic data. Lo...
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Taylor Series
##8.8. Taylor Series ### Exercise 31 P.496 In Exercises 31 – 32, approximate the value of the given definite integral by using the first 4 nonzero terms of the integrand’s Taylor series. \(\int_{0}^{\sqrt{\pi}}{sin(x^2)dx}=\int_{0}^{\sqrt{\pi}}{\sum_{n=0}^{\infty}{\frac{(-1)^n(x^2)^{2n+1}}{(2n+1)!}}dx}\\ \\{\quad\quad\quad\quad\quad\quad}=\su...
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Computational Mathematics
Probleme 1 set.seed(35) N <- 10000 nran <- 100 mu <- sig <- (N + 1)/2 X <- runif(N, min = 1, max = N) Y <- rnorm(nran, mean = mu, sd = sig) Probability 1a. Let A be the event X>x and B be the event X>y, P(X>x|X>y) = P(A|B). That is the probability of event A given the event B has accured. \(P(A|B)=\frac{P(A\cap B)}{P(B)} = \frac{P(A)}{P(B)...
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Evaluation of Recommenders Systems
—————-Evaluation of Recommender Systems————- Import libraries and preprocess the dataset set.seed(1) library(magrittr) library(pander) ## Warning: package 'pander' was built under R version 3.6.3 library(recommenderlab) ## Warning: package 'recommenderlab' was built under R version 3.6.3 ## Loading required package: Matrix ##...
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Evaluation of Recommender Systems
—————-Evaluation of Recommender Systems————- Import libraries and preprocess the dataset set.seed(1) library(magrittr) library(pander) ## Warning: package 'pander' was built under R version 3.6.3 library(recommenderlab) ## Warning: package 'recommenderlab' was built under R version 3.6.3 ## Loading required package: Matrix ##...
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Time Series Forecasting
DATA 624 Summer 2020, Project #1 Format: Group Effort, Group Representative will turn in your assignment. No conversations across groups regarding this project. DUE: 6/27/20 by Midnight ET Submission: Via Email – scott.burk@sps.cuny.edu Submission: Word Readable Document for Report (all in one), Excel Readable (all in one, separate sheets). Fil...
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