Data Science

Machine Learning for .NET

The code in the following snippet demonstrates the simplest ML.NET application. This example constructs a linear regression model to predict house prices using house size and price data. In your real-life applications, your data and model will be much more complex.     using...

Building a speedometer gauge in Tableau

Everyone knows that Tableau does not have a native Gauge, so video in Portuguese explain how to make it possible.   Also, I've included all the steps in English to make your life easier:     Follow all the steps below:   1º - DATA SOURCE    Open Tableau and...

Building a Gauge in Excel


XGBoost Algorithm with R - Train model accuracy validation

This is a good sample how we can use to validate a train model to find the best setup:   Watch this video:

Top 50 ggplot2 Visualizations - The Master List (With Full R Code)

1. Correlation The following plots help to examine how well correlated two variables are. Scatterplot The most frequently used plot for data analysis is undoubtedly the scatterplot. Whenever you want to understand the nature of relationship between two variables, invariably the first choice is the...

R Shiny Server connection with Cassandra on Google Maps

It was a project involving R and Cassandra to represent the customers on Google Maps.   ================================================================ --// Full...

SSRS - Report Mobile SQL 2016 - Sample Layout

This is a Report Mobile SQL 2016  Sample Layout:  

SSRS - Pie charts with Standard Deviation layout and design

It's an example of layout / template created in SSRS:  

R Studio - SQL Database Connection

This is a database connection sample:    library(RODBC) dbhandle <- odbcDriverConnect('driver={SQL Server};server=SERVERNAME;database=DW;trusted_connection=true')  res <- sqlQuery(dbhandle, 'select * from DW.DBO.Vehicle ')   head(res)    

My first R code embedded in SQL 2019

My first R code embedded in  SQL 2019   EXECUTE sp_execute_external_script @language = N'R', @script = N' a <- 1 b <- 2 c <- a/b d <- a*b print(c, d)'   EXECUTE sp_execute_external_script @language = N'R', @script = N' a <- 1 b...

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