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Vincent Granville's Blog – October 2017 Archive (22)

Logistic Map, Chaos, Randomness and Quantum Algorithms

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…

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Added by Vincent Granville on October 29, 2017 at 8:00pm — 3 Comments

Weekly Digest, October 30

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

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Added by Vincent Granville on October 29, 2017 at 11:30am — 1 Comment

Thursday News: Random circles, graph theory, regression, trading Bitcoin, computational photography...

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

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Added by Vincent Granville on October 26, 2017 at 8:20am — No Comments

Best DSC Forum Questions - Part 2

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 These questions were selected manually based on popularity, removing outdated material.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…

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Added by Vincent Granville on October 24, 2017 at 1:10pm — No Comments

The Ethical & Social Implications of Artificial Intelligence

Bill Vorhies interview by Experian, originally posted here

DSC Resources

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Added by Vincent Granville on October 24, 2017 at 9:48am — No Comments

21 Great Blogs Posted in the last 12 Months

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…

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Added by Vincent Granville on October 24, 2017 at 7:30am — No Comments

Little Stochastic Geometry Problem: Random Circles

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…

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Added by Vincent Granville on October 23, 2017 at 4:00pm — No Comments

Weekly Digest, October 23

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

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Added by Vincent Granville on October 22, 2017 at 9:00am — No Comments

Free Book: SQL Essentials

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…

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Added by Vincent Granville on October 21, 2017 at 1:30pm — 4 Comments

Best DSC Forum Questions - Part 1

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…

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Added by Vincent Granville on October 19, 2017 at 2:30pm — No Comments

Thursday News: AI, Data Science, Data Lakes, DataViiZ, Image Analysis, NoSQL

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

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Added by Vincent Granville on October 19, 2017 at 8:39am — No Comments

How Mathematical Discoveries are Made

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…

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Added by Vincent Granville on October 17, 2017 at 8:30am — No Comments

100+ Commonly Asked Data Science Interview Questions

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…
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Added by Vincent Granville on October 15, 2017 at 4:30pm — No Comments

Weekly Digest, October 16

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
  • Nine out of ten employers say that a credential would be beneficial when seeking to hire specialists in the predictive analytics field. The …
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Added by Vincent Granville on October 15, 2017 at 9:00am — No Comments

Building your first Machine Learning model on iPhone

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…
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Added by Vincent Granville on October 14, 2017 at 9:00am — No Comments

DSC Classifieds: Books, Data Sets, Internships, Gigs, Events and more

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:

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Added by Vincent Granville on October 13, 2017 at 7:00am — No Comments

Thursday News: Blockchain, NLP, IOT, Python, Statistical Science

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

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Added by Vincent Granville on October 12, 2017 at 9:44am — No Comments

26 Great Blogs Posted in the last 12 Months

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…

Continue

Added by Vincent Granville on October 10, 2017 at 9:30am — No Comments

Weekly Digest, October 9

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…

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Added by Vincent Granville on October 7, 2017 at 12:00pm — No Comments

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