In this article, using a few examples and solutions, I show that the "best" algorithm is many times not what data scientists or management think it is. As a result, too many times, misfit algorithms are implemented. Not that they are bad or simplistic. To the contrary, they are usually too complicated, but the biggest drawback is that they do not address the key problems. Sometimes they lack robustness, sometimes they are not properly maintained (for instance they rely on outdated lookup…Continue
INTRODUCTION TO THE RESEARCH QUESTION
The research was conducted to find out what price maximises profit without sacrificing the high demand for the product due to the price being too high nor sacrificing the margins on the product due to the price being too low.
The goal is to experiment with different price levels for the same product in one market place and country to see how sales volumes change with prices and which volume level of…Continue
This article has been contributed by Alain Louchez (Georgia Tech Research Institute)
The Internet of Things already integrates a new phase beyond prescriptive analytics.
There is no shortage of attention lately on the “Internet of Things”. As a case in point, see the “Developing Innovation and Growing the Internet of Things Act” or “DIGIT Act”, i.e.,…Continue
Added by Shay Pal on October 29, 2016 at 4:00pm — No Comments
In the previous example we used clustering to see if an apparent pattern exists within Brexit tweets. We found out that we have three distinct patterns, the leave, the referendum, and Brexit. This in itself helps us think that we may even create a classifier that can identify if the tweet writer is pro or agains an issue automatically, with no human intervention.
Let's get back to the issues related to clustering. To use the clustering algorithm we had to…
Added by Dalila Benachenhou on October 29, 2016 at 2:30pm — No Comments
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 ContributionsContinue
Added by Vincent Granville on October 28, 2016 at 4:30pm — No Comments
"Machine Learning (ML)" and "Traditional Statistics(TS)" have different philosophies in their approaches. With "Data Science" in the forefront getting lots of attention and interest, I like to dedicate this blog to discuss the differentiation between the two. I often see discussions and arguments between statisticians and data miners/machine learning practitioners on the definition of "data science" and its coverage and the required skill sets. All is needed, is just paying attention to the…Continue
This is the last – for now – installment of my mini-series on sentiment analysis of the Stanford collection of IMDB reviews (originally published on recurrentnull.wordpress.com).
So far, we’ve had a look at classical bag-of-words models and…
Added by Sigrid Keydana on October 27, 2016 at 10:30pm — No Comments
This is the continuation of my mini-series on sentiment analysis of movie reviews, which originally appeared on recurrentnull.wordpress.com. Last time, we had a look at how well classical bag-of-words models worked for classification of the Stanford collection of IMDB reviews. As it turned out, the “winner” was Logistic…Continue
Added by Sigrid Keydana on October 27, 2016 at 3:00pm — No Comments
With their billions of annual captive customers, one would think that airports, and by logical extension, airlines, were prime candidates for the implementation of the Internet of Things (IoT) technology to improve passenger experience, yet, there’s not been much progress there.
Added by Raj Dalal on October 27, 2016 at 3:30am — No Comments
"Data Science(DS)" is nothing new but the term itself and the recent level of interest in it. As a practice it has commercially (not academically) existed for more than 25 years, mainly under "Data Mining (DM)" and "predictive analytics(PA)," since early 1990's. DM and PA got a lot of traction originally in financial, Telco, and retail industries that had a lot of granular historical data. Like anything that gets sudden attention and interest, DS has been misused and abused in a variety of…Continue
Starred articles are candidates for the picture of the week. A comprehensive list of all past resources is found here. We are in the process of automatically categorizing them using indexation and automated tagging…Continue
Added by Vincent Granville on October 26, 2016 at 7:30am — No Comments
Guest blog post by Jen-Hsun Hunag, Founder, President and CEO at NVIDIA, Originally entitled "The Intelligent Industrial Revolution".
Intelligent machines powered by AI computers that can learn, reason and interact with people are no…Continue
Added by Vincent Granville on October 25, 2016 at 5:00pm — No Comments
The health area is characterized by the management of huge data volumes. What if those data are processed and provided to the health professionals and their patients or, even to the health system at large? Not only one, two, three patients are healed but also it enables to enhance the population’s…Continue
Added by Ernesto Mislej on October 25, 2016 at 7:30am — No Comments
Data integration requires merging date from different sources, stored using technologies. Companies build a “data warehouse where aggregated data can be stored and retrieved. This is particularly useful for researchers looking to big data to aid in their investigation and corporations usually during the merging with other companies.
Added by Dante Munnis on October 25, 2016 at 7:00am — No Comments
The use of Python as a data science tool has been on the rise over the past few years: 54% of the respondents of the latest O'Reilly Data Science Salary Survey indicated that they used Python. The results of the 2015 survey indicated that 51% of the respondents used Python.
Nobody can deny that Python has been on the rise in the data science industry and it certainly seems that it's here to stay.
This rise in popularity in the industry, the long gone infancy of Python packages…Continue
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. Below is our fourth edition.…Continue
Added by Vincent Granville on October 24, 2016 at 5:00pm — No Comments
Summary: Convolutional Neural Nets are getting all the press but it’s Recurrent Neural Nets that are the real workhorse of this generation of AI.
We’ve paid a lot of attention lately to Convolutional Neural Nets…Continue
Added by William Vorhies on October 24, 2016 at 3:53pm — No Comments
Imagine I show you a book review, on amazon.com, say. Imagine I hide the number of stars, – all you get to see is the number of stars. And now I’m asking you, that review, is it good or bad?…Continue