Blogs

  • Homicide and Violent Crime in Chicago – a First Look at the Data with R

    Thursday, March 2, 2017 - 08:30
    Several years ago, the City of Chicago committed to making its data accessible, establishing a portal. Early in 2016, I canvassed the site, looking for crime data. [more]
  • Politics, Luck, Bayes Theorem, and Base Rates

    Wednesday, March 1, 2017 - 13:15
    My wife gave me a stern warning before we headed out to a suburban neighbor's Super Bowl party: avoid “spirited” political discussion or else. Actually, I'd already self-forwarned, having remembered being in the center of a blue vs red imbroglio several years ago. And it's safe to say there was heightened sensitivity this year. After a pretty benign gathering for the first 90 minutes or so, I did get a bit animated when the discussion... [more]
  • Containing Big Data: What Size is Your Suitcase?

    Thursday, January 12, 2017 - 10:15
    Every year it seems, we “discuss” the relative merits of his statistical software choice, SAS, versus mine, either R or Python. [more]
  • Frequencies in R - Part 1

    Tuesday, December 6, 2016 - 08:45
    I’m often asked to name the most common statistical procedure used in my company’s Data Science work. My answer, only partly in jest, is frequencies and crosstabs. [more]
  • Python Logo

    Efficient Machine Learning in H2O with R and Python, Part 1

    Wednesday, October 5, 2016 - 08:30
    One of the major benefits of working with R and Python for analytics is that there’re always new and freely-available treats from their vibrant open source ecosystems. [more]
  • 3 Challenges to Unleashing Your Data Preparation Potential

    Tuesday, August 16, 2016 - 14:45
    Read about the data prep power struggle happening inside businesses around using technology to solve problems, and what to do about it. [more]
  • avro

    New Release 3.0 of Avro Output Plugin for Pentaho Data Integration

    Tuesday, July 19, 2016 - 10:15
    Version 3.0 was built to support version 6.x metadata injection, and is a complete refactoring of the plugin. [more]
  • My Stock Market Index Dashboard with R, Plotly, and the Plotly Cloud

    Wednesday, July 13, 2016 - 16:15
    It’s been difficult for me to ponder my 2016 stock index dashboard this past week. [more]
  • Reviewing the Book "Tools for Smart Thinking"

    Thursday, July 7, 2016 - 08:30
    “The logic of science is the logic of business and life” -- quote from philosopher John Stuart Mill -- is the opening salvo of Richard Nisbett's new book, "Mindware: Tools for Smart Thinking" Alas, the human species is generally not very “logic of science” friendly, hence the motivation for professor Nisbett's approachable tome to advance a clear-thinking, evidence-responsive populace. Mindware isn't the first social science book to address human weaknesses in scientific thinking. Indeed, in... [more]
  • Pentaho Data Integration Best Practices: Lookup Most Recent Record

    Wednesday, July 6, 2016 - 10:00
    What are the best practice options for looking up the “most recent record” in Pentaho? [more]

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