R package data.table has become a tool of choice when working with big tabular data thanks to its versatility and performance. Its Python counterpart py datatable follows R cousin in performance and steadily catches up in functionality. A notable omiss...

The Question I am a sucker for IMDb ratings so don't judge me. They are my priors before watching almost anything on a screen (home screen that is). But between movies (feature films), TV movies and TV (mini) series IMDb ratings are highly inconsistent...

The Question I am a sucker for IMDb ratings so don't judge me. They are my priors before watching almost anything on a screen (home screen that is). But between movies (feature films), TV movies and TV (mini) series IMDb ratings are highly inconsistent...

Part 1 of this blog series discussed how to: apply for free academic license of H2O.ai automated machine learning (AutoML) platform Driverless AI, spin up a VM with budget-oriented cloud provider Paperspace that can host Driverless AI, install Driverless AI on VM including configuration that utizlizes powerful GPUs available ...

Introduction Coronovirus pandemic is changing our lifestyle from daily routine to near- and midterm plans, affecting relationships at home and work, adjusting our economical priorities and abilities, making us reassess value of goods and services, and arguably impacting all aspects of life. Better knowledge and understanding of the decease, its ...

The Survey The survey What Degree is Best for Data Science? ran from  February 9 through March 12, 2020 asking participants 4 questions: Answers about self: Q1: What is the highest level of school degree you have completed? Q2: Which of the following best describes the field in which you received your highest degree?  ...

  TL;DRJust answer 4 questions about best degree for Data Science here: https://www.surveymonkey.com/r/7FGGWS7 No doubt asking the question "What's the best degree for Data Science?" one won't expect unified or even a few opinions (unless everything I know about people practicing data science is all wrong). ...

If you are a professor teaching or a student enrolled in machine learning program or non-technical program with a machine learning hands-on lab becoming a member of the H2O.ai Academic Program will get you free access to non-commercial use of software license for education and research purposes. Since ...

H2O engineers continually innovate and implement latest techniques by following and adopting latest research, working on cutting edge use cases, and participating and winning machine learning competitions like Kaggle. But thanks to explosion of AI research and applications even most advanced automated machine learning platforms like H2O.ai ...

Creating and plotting decision trees (like one below) for the models created in H2O will be main objective of this post: Figure 1. Decision Tree Visualization in R Decision Trees with H2O With release 3.22.0.1 H2O-3 (a.k.a. open source H2O or simply H2O) added to ...

In previous post we discovered Dallas Animal Services data sources (available on Dallas Open Data) and successfully analyzed how animals get admitted to and discharged from the city shelters. We loaded actual shelter records and looked at the types of admittance, different outcomes and their relationships. In this post we ...

Thanks to Dallas OpenData anyone has access to the city animal shelter records.  If you lost or found a pet it could be that he or she spent some time in a shelter - I personally took lost dogs there. It's unfortunate but every year tens of thousands of animals ...

Wikipedia defines small data 'small' enough for human comprehension but then it goes further by qualifying data in a volume and format that makes it accessible, informative and actionable. I am not certain the latter is always true: smaller footprint doesn't automatically qualify data as informative and actionable without more ...

Skewed data prevail in real life. Unless you observe trivial or near constant processes data is skewed one way or another due to outliers, long tails, errors or something else. Such effects create problems in visualizations when a few data elements are much larger than the rest. Consider U.S. 2016 ...

Two years ago we had a rare family outing to the Dallas Museum of Art (my son is teenager and he's into sport after all). It had an excellent exhibition of modern art and DMA allowed taking pictures. Two hours and dozen of pictures later my weekend was over but ...

No surprise that Teradata Aster runs each SQL, SQL-MR, and SQL-GR command in parallel on many clusters with distributed data. But when faced with the task of running many similar but independent jobs one has to do extra work to parallelize them in As...

If you already found package extrafont then you probably found how to load and use Windows fonts in R visualizations. But just in case, everything to get started with extrafont is found here and summarized for using fonts in Windows for on-screen or bitmap output below:One thing to add ...

This article will take us step-by-step over incremental changes to produce a bubble chart using ggplot2 that looks like this:We'll encounter the plot above once again at the very end after explaining each step with code changes and observing intermediate plots. Without getting into details what it means (curios ...

While working on new graph functions for my package toaster I had to pick from the R packages that represent graphs. The choice was between network and graph objects from the network and igraph correspondingly - the two most prominent packages for creating and manipulating graphs and networks in R....