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Data Science Blog

An Ad-hoc method for calibrating models
12 hours ago

An Ad-hoc method for calibrating models

What is model calibration? You want to pick parameter values on the basis of external (to your data) evidence, and compare the model’s predictions with the actual data:

https://www.r-bloggers.com/an-ad-hoc-method-for-calibrating-uncalibrated-models/

How to Build Disruptive Data Science Teams: 10 Best Practices
1 day ago

How to Build Disruptive Data Science Teams: 10 Best Practices

KDnuggets has an interesting article out on building data science teams. Granted, they’re talking about a pretty big team here!:

https://www.kdnuggets.com/2019/07/disruptive-data-science-teams-best-practices.html

Co-integration and Structural Breaks Time Series Analysis using R on 100 year bond yields
6 days ago

Co-integration and Structural Breaks Time Series Analysis using R on 100 year bond yields

An interesting tutorial at looking at breaks in the bond market using R and time series analysis:

https://www.datasciencecentral.com/profiles/blogs/co-integration-and-structural-breaks-time-series-analysis-using-r

Model Governance and Model Operations
1 week ago

Model Governance and Model Operations

O’Reilly article on organizational handing of mathematical models, a topic that is not covered enough in my opinion:   https://www.oreilly.com/ideas/what-are-model-governance-and-model-operations?fbclid=IwAR2HXtnERk_Kn5RQ85N0fHqcxTpRtp8yjIbmXWPVjAyAKDjndBUI-MuaoDk

R Job Scraping and Mapping
2 years ago

R Job Scraping and Mapping

In this post, I’m going to use R to scrape Indeed.com for some jobs, then plot the positions of the top jobs on a map, and save that map to …
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Milepost GIS Location Estimation in R
2 years ago

Milepost GIS Location Estimation in R

I was recently forced at gunpoint to estimate the positions of mileposts along the highways in Maricopa County. This was to estimate stops and arrest positions for law enforcement. Like …
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Comparison of R and Python Parallel Computing in Address Geocoding
2 years ago

Comparison of R and Python Parallel Computing in Address Geocoding

I recently needed to process a bunch of addresses that our proprietary geocoding software was having a problem with. I won’t say the name of the geocoder, but it rhymes …
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R Function to Calculate Bearing Between Two Positions (lat-lon)
2 years ago

R Function to Calculate Bearing Between Two Positions (lat-lon)

An R function I had to write to calculate the true course/bearing between two lat lon positions. Note that the fossil R library has a function called earth.bear to do …
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Hands-On Machine Learning with Scikit-Learn and TensorFlow fix for chapter 3 MNIST dataset

In case you’re using the book in the title, here’s the fix for the Chapter 3 MNIST dataset hang

  1. Download by clicking on the view raw dataset from https://github.com/operalib/operalib/blob/master/mnist/mldata/mnist-original.mat
  2. Use …
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Build your own discrete event simulation framework in Python Part III
2 years ago

Build your own discrete event simulation framework in Python Part III

In Part II, we added a queue and a PatrolCar class to our Python simulation to answer call events in our police patrol simulation. In this installment, we’ll add calls to …
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