How to Connect R with SQL
Need to Connect R with SQL It is common for Data Analysts/Scientists to connect R with SQL. For that reason,
Document Letter Frequency in Python
Letter Frequency We will provide you a walk-through example of how you can easily get the letter frequency in documents
Non-Negative Matrix Factorization for Dimensionality Reduction
We have explained how we can reduce the dimensions by applying the following algorithms: PCA and t-SNE Autoencoders We will
Hierarchical Clustering of Countries based on Eurovision Votes
Description This dataset contains the votes From Country to To Country for Eurovision 2016. There are the Jury Votes and
Tip: How to define your distance function for Hierarchical Clustering
Many times there is a need to define your distance function. I found this answer in StackOverflow very helpful and
Get the Dominant Colors of an Image with K-Means
The logic Most images are an RGB array where we can easily apply K-Means Clustering. The Centers of each cluster
Hierarchical Clustering in Python
We have provided an example of K-means clustering and now we will provide an example of Hierarchical Clustering. We will
How to make hand-drawn style plots in Python
Python gives us the option to make xkcd style plots using the matplotlib library. For the plots we will use
R Exercises – Interview Questions (Stats and Simulation)
For Data Science positions that require some knowledge of Statistics and Programming skills, is common to ask questions like those
Tips About Numpy Arrays
Differences Between Numpy Arrays and Python Lists There are some differences between Numpy Arrays and Python Lists. We will provide
Estimate Probabilities of Card Games
We are going to show how we can estimate card probabilities by applying Monte Carlo Simulation and how we can
