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Vincent Granville's Blog – June 2015 Archive (17)

Weekly Digest - July 6

The full version is always published Monday. Starred articles are new additions or updated content, posted between Thursday and Sunday. The picture of the week is from the contribution marked with a +, where you will find the details.

Featured

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Added by Vincent Granville on June 30, 2015 at 10:30am — No Comments

Data Science as a profession – Time is Now

Guest blog post by Kirk Borne.

Over the past 2 to 3 years, I have attended many Big Data and Data Science conferences (where I have given numerous talks, participated on many panels, and talked with countless data professionals). During this…

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Added by Vincent Granville on June 29, 2015 at 4:00pm — No Comments

Weekly Digest - June 29

The full version is always published Monday. Starred articles are new additions or updated content, posted between Thursday and Sunday. The picture of the week is from the contribution marked with a +, where you will find the details.

Announcements

  • Data moves fast. CVS Health is committed to keeping pace by investing in our Analytic teams and…
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Added by Vincent Granville on June 24, 2015 at 3:00pm — 2 Comments

Spectacular patterns found in rare, big numbers used in encryption schemes

This may lead to a practical, feasible solution, to factor the product of two very large prime numbers (with thousands of digits), making many security systems vulnerable to new types of attacks: factoring encryption keys, en masse.

Let's start with the pictures. The patterns (as well as how to leverage them) are explained below.…

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Added by Vincent Granville on June 19, 2015 at 2:00pm — 3 Comments

Weekly Digest, June 22

The full version is always published Monday. Starred articles are new additions or updated content, posted between Thursday and Sunday. The picture of the week is from the contribution marked with a +, where you will find the details.

Announcement

  • SlideRule's …
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Added by Vincent Granville on June 17, 2015 at 10:00am — No Comments

How to Avoid a Data Disaster- Infographic

Infographics provided by SupremeSystems.

We reveal some interesting statistics around data loss and also offer some helpful advice about what an effective data backup plan should look like. For example, did you know that this year, 40% of small to medium businesses that manage their own network and use the Internet for more than e-mail will have their network accessed by a hacker? Also, find out what are the main…

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Added by Vincent Granville on June 15, 2015 at 5:39pm — 1 Comment

Elastic Is a Great Paradigm When “All You Can Eat Data Consumption” Is the Goal

Guest blog post.

Today, people are no longer looking to reduce their data consumption. In fact, if anything, they want more data originating from more sources and with more diversity than anyone could have ever imagined. As we pioneer a world where data can be digested easily, software solutions need to be engineered so they can expand to meet the customers demand. Increasingly, and because of this trend, more and more software…

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Added by Vincent Granville on June 15, 2015 at 5:32pm — No Comments

Reducing Data Cleansing Time to Get Actionable Insights Faster

Guest blog post by TheKiniGroup, originally posted here.

If you categorized how you spend your time at work every day, on which tasks do you spend the bulk of your time? Most business analysts spend 50 to 80 percent their time…

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Added by Vincent Granville on June 15, 2015 at 11:56am — No Comments

Feature Scaling and Normalization

Very long article posted by Sebastian Raschka in 2014. Here we only provide the table of content, and a chart showing the results of PCA applied to a wine dataset. A link to the full version is provided below. The article is rather technical and uses Python, including the scikit-learn, numpy. pandas and matplotlib libraries. Interesting for anyone working with scores and looking for normalization, though personally, I don't like PCA (produces meaningless reduced variables and sensitive…

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Added by Vincent Granville on June 15, 2015 at 8:26am — No Comments

Decision Boundaries for Deep Learning and other Machine Learning classifiers

This article was originally posted here, by Dr. Takashi J. OZAKI. Below is a short version.

H2O, one of the leading deep learning framework in python, is now available in R. We will show how to get started with H2O, its working, plotting of decision boundaries and finally lessons learned during…

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Added by Vincent Granville on June 15, 2015 at 7:30am — No Comments

What are data scientists interested in? Insights from our search engine data

We've gathered data from our newly created DSC search box, and based on 20,000 search queries over the last four months (most of them in the last 30 days), we discovered that the top queries so far are:

Top queries

  • data sets (1266) 
  • excel (846) 
  • python (732) 
  • bernard marr may 2015 (615) 
  • r (608) 
  • visualization (567) 
  • cheat…
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Added by Vincent Granville on June 14, 2015 at 8:30pm — No Comments

Fast-Track, On-Demand, No-Fee Program to Become a Data Scientist

We have re-designed our online, accelerated data science apprenticeship: it is now available to anyone, at no cost, with no restrictions, and does not require any application nor deadlines. Data sets, a cheat sheet to get you started, real-life projects to work on, sample code, and tons of resources,…

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Added by Vincent Granville on June 12, 2015 at 6:00pm — 3 Comments

Weekly Digest, June 15

The full version is always published Monday. Starred articles are new additions or updated content, posted between Thursday and Sunday. The picture of the week is from the contribution marked with a +, where you will find the details.

Announcement

How big is “Big Data?” Business analytics spending will grow to $89.6 billion by 2018. Banking, healthcare, energy and…

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Added by Vincent Granville on June 10, 2015 at 7:00am — No Comments

Case study: how much good traffic a scammer gets from one email spam

I got this in my mailbox this morning:

Subject: Support alert!

From: "LinkedIn Support" <[email protected]>

Date: Mon, June 8, 2015 2:46 pm

Hello [email protected]

It's very important you get verified. 

Pleaseclickhere. [dangerous Link deleted]



LinkedIn Security Team 



This message is sent to…

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Added by Vincent Granville on June 8, 2015 at 1:00pm — No Comments

Predicting records (highs or lows) - how to do it right (and without statistics)

While everyone talk about unusual extreme weather events (heat waves, cold spells, floods, droughts), very few, including scientists, have been able to make sound predictions for extreme events, be it weather or stock market extreme behavior, or any bubble. Here you will learn how to produce simple model-free confidence intervals for extreme events in Excel, how to generate (correlated) simulated stock market data and (uncorrelated) natural data such as air pollution index, understand why…

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Added by Vincent Granville on June 3, 2015 at 8:30pm — No Comments

Weekly Digest, June 8

The full version is always published Monday. Starred articles are new additions or updated content, posted between Thursday and Sunday. The picture of the week is from the contribution marked with a +, where you will find the details.

Featured…

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Added by Vincent Granville on June 3, 2015 at 9:30am — No Comments

7 Ingredients for Great Visualizations

Great article by Bernard Marr. Here we present a summary. A link to the full article is provided below.

Source for picture: click here

1. Identify your target audience. 

2. Customize the…

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Added by Vincent Granville on June 1, 2015 at 9:30am — No Comments

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