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March 2015 Blog Posts (56)

Data Integrity - A Sequence of Words Lost in the World of Big Data

The subject of this blog might seem rather rudimentary for those who fully understand the importance of properly managing data. For those people, hopefully, you will find the post worth reading and provide constructive feedback and augment the discussion. The purpose of this post is to highlight the necessity to keep data clean and orderly so that the results of the analysis are reliable and trustworthy - if data integrity is intact, information derived from this data will be trustworthy…

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Added by Randall Shane on March 8, 2015 at 12:00pm — No Comments

Algorithmic Sensitivity to Social Phenomena Using Fractals

I took only a single biology course during my years in university. My environmental toxicology professor explained that when testing for the LD50 (the dose that kills 50 percent of a population) a certain percentage will probably die right away; on the other hand, some might be able to tolerate unusually high exposure levels. There is a distribution of responses. A related principle applies to stress. People respond differently to stress: some might flee from their stressors (avoid or evade)…

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Added by Don Philip Faithful on March 7, 2015 at 6:34am — No Comments

Data Science Fellowship Focused on Practical Experience

You've made up your mind to become a data scientist. You've taken every data science MooC, you've eaten a lifetime of pizza at machine learning meetups, you even attended a data science "academy." Why hasn't it worked?

Data Science is not knowledge to be acquired but rather a skill that can be learned and improved through practice. The number one qualification employers look for when hiring a data science candidate is previous experience. Startup.ML is launching a fellowship to give…

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Added by Arshak Navruzyan on March 5, 2015 at 10:00am — No Comments

All Machine Learning Models Have Flaws

Interesting article posted by By John Langford. John Langford is a machine learning research scientist, a field which he says "is shifting from an academic discipline to an industrial tool". He is the author of the blog …

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Added by Mirko Krivanek on March 5, 2015 at 8:30am — No Comments

The Interview with Yann Lecun of Facebook Artificial Intelligence

I thought that this interview deserved a repost here at Data Science Central. It is with the man responsible for Artificial Intelligence at Facebook: the AI director Yann Lecun; and might be of interested and appeal to the knowlegeable of AI here. 

I post an excerpt and the link below for the full interview:

IEEE Spectrum: We read about Deep Learning in the news a lot these days. What’s your…

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Added by Nuno Fernandes on March 5, 2015 at 8:00am — No Comments

The Awesome Ways Big Data Is Used Today To Change Our World

The term ‘Big Data’ is a massive buzzword at the moment and many say big data is all talk and no action. This couldn’t be further from the truth. With this post, I want to show how big data is used today to add real value.

Eventually, every aspect of our lives will be affected by big data. However, there are some areas where big data is already making a real difference today. I have categorized the application of big data into 10 areas where I see the most widespread use as well as…

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Added by Bernard Marr on March 5, 2015 at 8:00am — 2 Comments

Infographics on data quality

Submitted by Kendall Brennan, from Halo BI. Originally posted here.

DSC Resources

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Added by Vincent Granville on March 5, 2015 at 7:30am — 1 Comment

Why Competitive Intelligence needs its own wargame now

Try introducing yourself as a Competitive Intelligence or CI analyst. Chances are that the reactions will range from (a) That's what you do all day, Google search? to (b) Identifying 007 ways to look at competition, Corporate Bond?

Of course, one can always resort to the classical definition of CI. It is defined as the action of defininggathering, analyzing,and distributing intelligence about products, customers,…

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Added by Debleena Roy on March 4, 2015 at 9:00pm — 1 Comment

Salary Trends for Data Science Professionals

Guest blog post.

In continuation of our series exploring the data science community, we are now exploring salary patterns of data scientists. The below chart shows data from Indeed.com & the top 10 locations with the highest concentration of data scientists.

The median of these top 10 cities is between $142,000 to…

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Added by Vincent Granville on March 4, 2015 at 4:30pm — 1 Comment

Weekly Digest - March 9

The full version is always published Monday. Starred articles or sections are new additions or updated content, posted between Thursday and Sunday. 

Featured

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

How Big Data Can Change Our Lives: A Powerful Final Plea

Before Los Angeles Times reporter Laurie Becklund died of metastatic breast cancer earlier this month, she wrote a powerful final column. She asked friends and family not to say that she died fighting a courageous battle, a meaningless, trite phrase. She excoriated the pink ribbon and…

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Added by Peter Bruce on March 4, 2015 at 3:00pm — No Comments

Avoiding a common mistake with time series

Guest blog post by Tom Fawcett. Originally posted on SVDS.

Tom Fawcett is Principal Data Scientist at Silicon Valley Data Science. Co-author of the popular book Data Science for Business, Tom has over 20 years of experience applying machine learning and data mining in practical applications. He is a veteran of companies such as Verizon and…

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Added by Vincent Granville on March 3, 2015 at 9:30pm — 1 Comment

Why Does Everyone Need to Learn How to Code? To Understand Data.

NOTE: This post can be more beautifully read via Medium here: Why Everyone Needs to Learn to Code

You just finished the 10-hour javascript lesson on Codecademy, and you’re feeling pretty accomplished. You learned how control structures work, did some object-oriented programming, maybe even built a simple…

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Added by Brian Liou on March 2, 2015 at 10:00am — 1 Comment

Automating IHS Oil and Gas Production Data Downloads and Other Travels

Creating a data extractor is usually simple in the mind of a developer, although in reality it’s usually not so simple. Data extraction as a concept is fairly straightforward: Get the data from A and copy it to destination B. However, as most developers know, the devil is in the detail.

Whenever a data company, such as IHS, has a large data set and a complex set of rules to access the data required to…
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Added by Sullexis LLC on March 2, 2015 at 7:30am — 1 Comment

Jackknife and linear regression in Excel: implementation and comparison

The comparison is performed on a data set where linear regression works well: salary offered to a candidate, based on programming language requirements in the job ad: Python, R or SQL. This is a follow-up to the article highest paying programming skills. The increased accuracy of linear regression estimates is negligible, and well below the noise level…

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Added by Vincent Granville on March 1, 2015 at 4:00pm — 2 Comments

Book review: About Time Series Databases and a New look at Anomaly detection by Ted Dunning and Ellen Friedman

Introduction

 This blog is a review of two books. Both are available for free from the MapR site, written by Ted Dunning and Ellen Friedman (published by O Reilly) : About Time Series Databases: New ways to store and access data and…

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Added by ajit jaokar on March 1, 2015 at 9:22am — No Comments

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