Luckyeva

Luckyeva

#################################

#        Optimization           #

# 1) function f maps the possible
#  variable domain to the objective
#  function u(var1, var2, var3)

# 2) it compute the value of u and 
#  return the highest value of u 

Luckyeva

#########################################

# R Script for Getting and CLeaning data 

#########################################

# Load data from downloaded text files
filepath <- "/Users/lucky1eva/Downloads/UCI HAR Dataset/train/X_train.txt"
rawdata_train <- read.table(filepath)
filepath <- "/Users/lucky1eva/Downloads/UCI HAR Dataset/train/y_train.txt"

Luckyeva

## R Programming Assignment 3 - Part III

## TASKS: 
## (1)  Plot the 30-day mortality rates for heart attack
## (2)  Finding the best hospital in a state
## (3)  Ranking hospitals by outcome in a state
## -> (4)  Ranking hospitals in all states


## (4)  Ranking hospitals in all states

Luckyeva

## R Programming Assignment 3 - Part II

## Introduction

# The data for this assignment come from the Hospital Compare web site (http://hospitalcompare.hhs.gov)
# run by the U.S. Department of Health and Human Services. The purpose of the web site is to provide data and
# information about the quality of care at over 4,000 Medicare-certified hospitals in the U.S. This dataset essentially
# covers all major U.S. hospitals. This dataset is used for a variety of purposes, including determining
# whether hospitals should be fined for not providing high quality care to patients (see http://goo.gl/jAXFX
# for some background on this particular topic).

Luckyeva

## R Programming Assignment 3 - Part I

## Introduction
# Download the file ProgAssignment3-data.zip file containing the data for Programming Assignment 3 from
# the Coursera web site. Unzip the file in a directory that will serve as your working directory. When you
# start up R make sure to change your working directory to the directory where you unzipped the data.

# The data for this assignment come from the Hospital Compare web site (http://hospitalcompare.hhs.gov)
# run by the U.S. Department of Health and Human Services. The purpose of the web site is to provide data and
# information about the quality of care at over 4,000 Medicare-certified hospitals in the U.S. This dataset essentially

Luckyeva

# R assignment 1 - Air Pollution

# preparation for R workspace

myTable <- NULL
mydata <- NULL
idd  <- NULL
nobs <- NULL

Luckyeva

# R assignment 1 - Air Poluttion

corr <- function(directory, threshold = 0){
        # 'threshold' is a numeric vector of length 1 indicating the 
        # number of complete cases required to compute the correlation
        
        setwd(paste("/Users/lucky1eva/Downloads/", directory, sep = '' ))
        cr <- NULL
        dlist <- complete(directory, 1:332)
        oklist <- dlist[dlist[,2] >= threshold , 1]