Category : Machine Learning

30

Apr

Introduction to text mining in R

 
Introduction to text mining in R I was checking some Machine Learning challenges at Hackerrank and found a particular challenge which consist on document classification. The source is over here. I downloaded the dataset and decided to make my own text mining analysis instead. The dataset...
20

Apr

Introduction to K-means in R

 
Introduction to K-means in R Quoting Wikipedia: "k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to partition n observations into k clusters in which each observation...
25

Mar

Using Neural Networks to fit equations in R

 
Using Neural Networks to fit equations in R Introduction Quoting Wikipedia: "In machine learning and cognitive science, artificial neural networks (ANNs) are a family of statistical learning algorithms inspired by biological neural networks (the central nervous systems of animals, in...
19

Mar

The tale of two algorithms, importance of algorithm analysis in our daily programming

 
The tale of two algorithms, importance of algorithm analysis in our daily programming tasks   Introduction Quoting Wikipedia: "In computer science, the analysis of algorithms is the determination of the amount of resources (such as time and storage) necessary to execute them. Most...
14

Mar

Accuracy versus F score: Machine Learning for the RNA Polymerases

 
Accuracy versus F score: Machine Learning for the RNA Polymerases Introduction Hello, today I'm going to show you the difference of using two different common performance measures (useful not only for Machine Learning purposes, is useful in every scientific field). Until now, I have found...
22

Feb

Optimizing a multivariable function parameters using a random method, Genetic Algorithm and Simulated Annealing in R

 
Optimizing a multivariable function parameters using a random method, Genetic Algorithm and Simulated Annealing in R Introduction Say that you are implementing a non-linear regression analysis, which is shortly described by wikipedia as: "In statistics, nonlinear regression is a form of...
22

Feb

What are the names of the school principals in Mexico?, If your name is Maria, probably this post will interest you. Trends and cool plots from the national education census of Mexico in 2013

 
What are the names of the school principals in Mexico?, If your name is Maria, probably this post will interest you. Trends and cool plots from the national education census of Mexico in 2013 Introduction I will start this post with a disclaimer: The main intention of the post is to show...
21

Feb

If the typing monkeys have met Mr Markov: probabilities of spelling “omglolbbq” after the digital monkeys have read Dracula

 
If the typing monkeys have met Mr Markov: probabilities of spelling "omglolbbq" after the digital monkeys have read Dracula Introduction The infinite monkey theorem states that a monkey hitting keys at random on a typewriter keyboard for an infinite amount of time will almost surely type a...