Articles by Longhow Lam

Did you say SQL Server? Yes I did….

December 23, 2016 | 0 Comments

Introduction My last blog post in 2016 on SQL Server 2016….. Some years ago, I have heard predictions from ‘experts‘ that within a few years Hadoop / Spark systems would take over traditional RDBMS’s like SQL Server. I don’t think … Continue reading →
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Don’t buy a brand new Porsche 911 or Audi Q7!!

October 19, 2016 | 0 Comments

Introduction Many people know that nasty feeling when buying a brand new car. The minute that you have left the dealer, your car has lost a substantial amount of value. Unfortunately this depreciation is inevitable, however, the amount depends heavily … Continue reading →
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Danger, Caution H2O steam is very hot!!

September 30, 2016 | 0 Comments

H2O has recently released its steam AI engine, a fully open source engine that support the management and deployment of machine learning models. Both H2O on R and H2O steam are easy to set up and use. And both complement each … Continue reading →
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Some insights in soccer transfers using Market Basket Analysis

September 12, 2016 | 0 Comments

Introduction Although more than 20 years old, Market Basket Analysis (MBA) (or association rules mining) can still be a very useful technique to gain insights in large transactional data sets. The classical example is transactional data in a supermarket. For … Continue reading →
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New chapters for 50 shades of grey….

July 27, 2016 | 0 Comments

Introduction Some time ago I had the honor to follow an interesting talk from Tijmen Blankevoort on neural networks and deeplearning. Convolutional and recurrent neural networks were topics that already caught my interest and this talk inspired me to dive into … Continue reading →
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The Eurovision 2016 song contest in an R Shiny app

April 18, 2016 | 0 Comments

Introduction In just a few weeks the Eurovision 2016 song contest will be held again. There are 43 participants, two semi-finals on the 10th and 12th of May and a final on the 14th of May. It’s going to be a … Continue reading →
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Delays on the Dutch railway system

January 8, 2016 | 0 Comments

I almost never travel by train, the last time was years ago. However, recently I had to take the train from Amsterdam and it was delayed for 5 minutes. No big deal, but I was just curious how often these … Continue reading →
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A little H2O deeplearning experiment on the MNIST data set

November 25, 2015 | 0 Comments

Introduction H2O is a fast and scalable opensource machine learning platform. Several algorithms are available, for example neural networks, random forests, linear models and gradient boosting. See the complete list here. Recently the H2O world conference was held, unfortunately I … Continue reading →
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Restaurants as atomic nuclei with the R visNetwork package

September 18, 2015 | 0 Comments

Recently the R package visNetwork was brought to my attention. It is an R interface to the ‘vis.js’ JavaScript charting library where you can create interactive network graphs. To try out the package I need some data, luckily I still have some … Continue reading →
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Deploying a car price model using R and AzureML

August 20, 2015 | 0 Comments

Recently Microsoft released the AzureML R package, it allows R users to publish their R models (or any R function) as a web service on the Microsoft Azure Machine Learning platform. Of course, I wanted to test the new package, … Continue reading →
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