Category: data science

What is vtreat?

vtreat is a DataFrame processor/conditioner that prepares real-world data for supervised machine learning or predictive modeling in a statistically sound manner. vtreat takes an input DataFrame that has a specified column called “the outcome variable” (or “y”) that is the quantity to be predicted (and must not have missing values). Other input columns are possible … Continue reading What is vtreat?

Speaking at BARUG

We will be speaking at the Tuesday, September 3, 2019 BARUG. If you are in the Bay Area, please come see us. Nina Zumel & John Mount Practical Data Science with R Practical Data Science with R (Zumel and Mount) was one of the first, and most widely-read books on the practice of doing Data … Continue reading Speaking at BARUG

Florence Nightingale, Data Scientist

Florence Nightingale, Data Scientist.
In 1858 Florence Nightingale published her now famous “rose diagram” breaking down causes of mortality.

By w:Florence Nightingale (1820–1910). – http://www.royal.gov.uk/output/Page3943.asp [dea…

Lord Kelvin, Data Scientist

In 1876 A. Légé & Co., 20 Cross Street, Hatton Gardens, London completed the first “tide calculating machine” for William Thomson (later Lord Kelvin) (ref). Thomson’s (Lord Kelvin) First Tide Predicting Machine, 1876 The results were plotted on the paper cylinders, and one literally “turned the crank” to perform the calculations. The tide calculating machine … Continue reading Lord Kelvin, Data Scientist

PyCharm Video Review

My basic video review of the PyCharm integrated development environment for Python with Anaconda and Jupyter/iPython integration. I like the IDE extensions enough to pay for them early in my evaluation. Highly recommended for data science projects, at…

A Comment on Data Science Integrated Development Environments

A point that differs from our experience struck us in the recent note: A development environment specifically tailored to the data science sector on the level of RStudio, for example, does not (yet) exist. “What’s the Best Statistical Software? A Comparison of R, Python, SAS, SPSS and STATA” Amit Ghosh Actually, Python has a large … Continue reading A Comment on Data Science Integrated Development Environments

Could not Resist

Also, Practical Data Science with R, 2nd Edition; Zumel, Mount; Manning 2019 is now content complete! It is deep into editing and soon into production!

Data Layout Exercises

John Mount, Nina Zumel; Win-Vector LLC 2019-04-27 In this note we will use five real life examples to demonstrate data layout transforms using the cdata R package. The examples for this note are all demo-examples from tidyr/demo/, and are mostly based on questions posted to StackOverflow. They represent a good cross-section of data layout problems, … Continue reading Data Layout Exercises