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Vincent Granville's Blog – February 2018 Archive (21)

Sample Projects for Data Scientists in Training

Here is a list of potential projects to help you complete your master in data science or in a related field. 

Project #8: Detecting fake reviews on Amazon

Business and Applied Data Science

  1. Clustering 2,000+…
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Added by Vincent Granville on February 25, 2018 at 2:30pm — 2 Comments

Weekly Digest, February 26

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

  • The shortage of data analysts in the U.S. represents a major career opportunity for you. Leverage…
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Added by Vincent Granville on February 24, 2018 at 8:30am — No Comments

Difficult Probability Problem: Distribution of Digits in Rogue Systems

I recently posted a table summarizing probabilistic properties of digits in various number representation systems, see here.  The topic is already rather difficult for well-behaved systems (those listed in my table) but some systems are rogue, and do not have these nice statistical properties. Here we focus on one of these less known systems,…

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Added by Vincent Granville on February 22, 2018 at 7:00pm — 1 Comment

Thursday News: Correlation, Regression, R, AI, Books, Deep Learning, NLP

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

Forum Questions and Answers

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Added by Vincent Granville on February 22, 2018 at 11:30am — No Comments

15 Great Articles About Decision Trees

This resource is part of a series on specific topics related to data science: regression, clustering, neural networks, deep learning, Hadoop, decision trees, ensembles, correlation, outliers, regression, Python, R, Tensorflow, SVM, data reduction, feature selection, experimental design, time series, cross-validation, model fitting, dataviz, AI and many more. To keep receiving these articles, …

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Added by Vincent Granville on February 21, 2018 at 6:30pm — No Comments

Selected Recent Articles from Top DSC Contributors - Part 6

This is a new series, featuring great content from our top contributors. Some of these articles are rather technical in nature, but many are business-oriented and written in simple English. The entire series consists of about 120 articles. We intend to publish a new set every two weeks or so. Click here to check out the…

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Added by Vincent Granville on February 20, 2018 at 3:30pm — No Comments

Cool Video: An Unexpected Use of AI and IoT to Enjoy Music

Back to the heydays of Youtube, when it was all about amateur videos. Here, with a modern twist: A guy (me) dancing while listening to music produced by the Alexa show. You can choose the music you want, skip songs you don't like, increase volume, and so on: Just ask the Alexa robot.

This is an untouched, raw video - no rehearsal of anything. An example of what IoT (Internet of Things) is.…

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Added by Vincent Granville on February 18, 2018 at 4:30pm — No Comments

Weekly Digest, February 19

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

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Added by Vincent Granville on February 18, 2018 at 9:30am — No Comments

Thursday News: GIS, AI, Python, Deep Forests, Supervised Learning, Image Analysis, Correlation, and More

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

Resources and Technical

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Added by Vincent Granville on February 15, 2018 at 10:30am — No Comments

Selected Recent Articles from Top DSC Contributors - Part 5

This is a new series, featuring great content from our top contributors. Some of these articles are rather technical in nature, but many are business-oriented and written in simple English. The entire series consists of about 120 articles. We intend to publish a new set every two weeks or so. Click here to check out the…

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Added by Vincent Granville on February 12, 2018 at 7:30pm — No Comments

Chicago Homicides 2017, a Follow-Up Look with R

Guest blog post by Steve Miller.

A year ago, I posted an article on the disturbing 57% increase in Chicago homicides for 2016. There's been no shortage of loaded commentary since, including strong statements by the…

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Added by Vincent Granville on February 11, 2018 at 5:30pm — 1 Comment

Weekly Digest, February 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

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Added by Vincent Granville on February 11, 2018 at 10:30am — No Comments

Number Representation Systems Explained in One Picture

Back to the basics. Here we are dealing with the oldest data set, created billions of years ago -- the set of integers -- and mostly the set consisting of two numbers: 0 and 1.  All of us have learned how to write numbers even before attending primary school. Yet, it is attached to the most challenging unsolved mathematical problems of all times, such as the distribution of the digits of Pi in the decimal system. The table below reflects this contrast, being a blend of rudimentary and deep…

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Added by Vincent Granville on February 10, 2018 at 5:30pm — 1 Comment

26 Great Articles and Tutorials about Regression Analysis

This resource is part of a series on specific topics related to data science: regression, clustering, neural networks, deep learning, decision trees, ensembles, correlation, ouliers, regression Python, R, Tensorflow, SVM, data reduction, feature selection, experimental design, cross-validation, model fitting, and many more. To keep receiving these articles, sign…

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Added by Vincent Granville on February 10, 2018 at 10:30am — No Comments

Best DSC Forum Questions - Part 8

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 February 8, 2018 at 11:00am — No Comments

Thursday News: ML, Marketing Bots, Time Series, AI, Predictive Modeling, Spark, Scala

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

Technical Resources

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Added by Vincent Granville on February 8, 2018 at 10:00am — No Comments

Most Data Science Job Ads are Targeted to Young People - And How to Get a Job at Facebook

If you are on Facebook, you've probably seen their ads to attract candidates to data science positions. You've probably seen ads featuring many young women working at Facebook in data science roles, and while I think this is great, it is a misrepresentation of their workforce (70% are males, in engineering positions.) 

What is surprising though, is that you would think these ads would be targeted to people who can relate to the picture featured in the ad. Yet, old white males see the…

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Added by Vincent Granville on February 6, 2018 at 1:30pm — 1 Comment

Weekly Digest, February 5

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
  • Enhance your data analysis skills with an online degree from Penn State World Campus. Our programs focus on data and data management. Learn to collect, classify,…
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Added by Vincent Granville on February 4, 2018 at 2:00pm — No Comments

Are the Digits of Pi Truly Random? - Updated with Blockchain Application and More

This article covers far more than the title suggests. It is written in simple English and accessible to quantitative professionals from a variety of backgrounds. Deep mathematical and data science research (including a result about the randomness of Pi, which is just a particular case) are presented here, without using arcane terminology or complicated equations.  

The topic discussed here, under a unified framework, is at the intersection of mathematics, probability theory, chaotic…

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Added by Vincent Granville on February 4, 2018 at 9:30am — 6 Comments

Paradox Regarding Random (Normal) Numbers

I am investigating if some numbers like Pi or SQRT(2) are normal in base 2 or 10, that is, whether any sequence of digits appear with the expected frequency in their decimal representation.  Actually, I am even more interested in the nested square root representation (see here) where "digits" are either 0 (with probability 0.43), 1 (with probability 0.30) or 2 (with…

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Added by Vincent Granville on February 2, 2018 at 7:30am — No Comments

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