To read my most recent article about chaotic systems, click here. 

The logistic map is the most basic recurrence formula exhibiting various levels of chaos depending on its parameter. It has been used in population demographics to model chaotic behavior. Here we explore this model in the context of randomness simulation, and revisit a…

Monday newsletter published by Data Science Central. Previous editions can be found here.  The contribution flagged with a + is our selection for the picture of the week.

Featured Resources and Technical Contributions

• Naive Bayes - Video Tutorial …

Here is our selection of featured articles and resources posted since Monday:

• To PhD or not to PhD? 
•  Some Computational Photography - Image Quilting (Texture Synthesis) with Dynamic Programming and Texture Transfer in Python …

This is a new series, featuring forum questions (new and old) that are still popular today. These questions were selected manually based on popularity, removing outdated material. The entire series consists of about 160 questions -- most with answers, sometimes several answers. We intend to publish a new set every two weeks or so. The previous edition was posted…

Bill Vorhies interview by Experian, originally posted here. 

DSC Resources

• Services: Hire a Data Scientist | …

This is part of a new series of articles: once or twice a month, we post previous articles that were very popular when first published. These articles are at least 6 month old but no more than 12 month old. The previous digest in this series was posted here a while back. 

21 Great Blogs Posted in the last 12…

This should remind you of your probability classes during college years. Can you solve this problem in 30 minutes? This could make for an interesting job interview question.

Problem

Points are randomly distributed on the plane, with an average of m points per unit area. A circle of radius R is drawn around each point. What is the proportion of the plane covered by these (possibly overlapping) circles? 

What if circles can have two…

Monday newsletter published by Data Science Central. Previous editions can be found here.  The contribution flagged with a + is our selection for the picture of the week.

Announcements - U.S. Soccer

• Back-End Developer. Manage interchange between server & user-side apps. Design,…

Update on 5/20/2019: it is no longer a free book, now available on Amazon, here. 

This book is a guide to using SQL to retrieve data from databases. This site includes a 'Practice SQL' environment where you can try out the examples from the book and experiment with SQL queries. This book is available…

This is a new series with 5 parts, featuring forum questions (new and old) that are still popular today. These questions were selected manually based on popularity, removing outdated material. The entire series consists of about 160 questions -- most with answers, sometimes several answers. We intend to publish a new set every two weeks or so.  

Best DSC Forum Questions - Part 1…

Here is our selection of featured articles an resources posted since Monday:

• 6 Types of Programmers in One Picture 
• 100+ Commonly Asked Data Science Interview Questions …

In one of my previous articles, you can learn the process about how discoveries are made by research scientists, from stating the problem, exploratory analysis, testing, simulations, data science guesswork, all the way to the discovery of a new theory and state-of-the-art statistical modeling,including new, fundamental mathematical/statistical equations.

This is a unique occasion to discover the creative path followed by inventors. Traditional research papers do not explain how a new…

Here is a new set of easy questions recently published, covering

• Statistics
• Programming (General, Big Data, Python, R, SQL)
• Modeling
• Behavioral
• Culture Fit
• Problem-Solving

Statistics:

• Prove that a random variable with a distribution on [0,1] (that is, the density function is equal to 0 outside [0, 1]) has an expectation always between 0 and 1. Prove that its variance is maximum and…

Monday newsletter published by Data Science Central. Previous editions can be found here.  The contribution flagged with a + is our selection for the picture of the week.

• Nine out of ten employers say that a credential would be beneficial when seeking to hire specialists in the predictive analytics field. The …

This tutorial will teach you how to build a ML model on iPhone using CorelML. Interestingly this is not the first time that Apple has come out with a framework for machine learning on its devices. Last year it launched a bunch of libraries for the same:

1. Accelerate and Basic Neural Network Subroutines (BNNS) – Efficiently utilize CPU for predictions using Convolutional Neural Networks.
2. Metal Performance Shaders CNN…

We are building a platform for data scientists and machine learning practitioners, to help you post or find relevant resources. We have the following categories:

• Consulting Gigs 
• Data Sets 
• Data Challenges …

Here is our selection of articles and resources featured since Monday:

• Predictive Analytics Takes a Victory Lap 
• Natural Language Understanding (NLU) - in Fraud Risk Management, Case Study …

This is part of a new series of articles: once or twice a month, we post previous articles that were very popular when first published. These articles are at least 6 month old but no more than 12 month old. The previous digest in this series was posted here a while back. 

26 Great Blogs Posted in the last 12…

Monday newsletter published by Data Science Central. Previous editions can be found here.  The contribution flagged with a + is our selection for the picture of the week.

Featured Resources and Technical Contributions…

Here is our selection of featured articles and resources posted since Monday:

• Some Thoughts on Mid-Career Switching Into Data Science 
• Interesting Problem: Self-correcting or Controlled Random Walks …