So l just completed my data science specialization with John Hopkins University via coursera today. I am actually excited completing this study because l’m new to data science and l need an introduction to know where to go next in my career as a sr. data developer. For the past 10 months, l have been […]
This is a simple script l wrote in SQL server 2012 which can be used to populate the Date table for use in a data warehouse. It provides components of the date which can be used in any situation. IF OBJECT_ID(‘tempdb..##Dates’) IS NOT NULL DROP TABLE ##Dates CREATE TABLE ##Dates(DateValue Date, YearValue INT, MonthValue INT, […]
Background Using devices such as Jawbone Up, Nike FuelBand, and Fitbit it is now possible to collect a large amount of data about personal activity relatively inexpensively. These type of devices are part of the quantified self movement – a group of enthusiasts who take measurements about themselves regularly to improve their health, to find […]
In this post, what I want to show is how the Machine Learning algorithms Random Forest, Boosted Trees and Linear Discriminant Analysis will compare to a stack or an ensemble of all of them together. Load the Alzheimer’s data using the following commands library(caret) library(gbm) set.seed(3433) library(AppliedPredictiveModeling) data(AlzheimerDisease) adData = data.frame(diagnosis,predictors) inTrain = createDataPartition(adData$diagnosis, p […]