Monthly Archives: February 2020

SR2 Chapter 2 Hard

February 29, 2020
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SR2 Chapter 2 Hard Posted on 1 March, 2020 by Brian Tags: statistical rethinking, solutions, conditional probability, counting, bayes rule, pandas Category: statistical-rethinking-2 Here’s my solution to the hard exercises in chapter...

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Predicting the misclassification cost incurred in air pressure system failure in heavy vehicles

February 29, 2020
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Predicting the misclassification cost incurred in air pressure system failure in heavy vehicles

Abstract The Air Pressure System (APS) is a type of function used in heavy vehicles to assist braking and gear changing. The APS failure dataset consists of the daily operational sensor data from failed Scania trucks. The dataset is crucial to the man...

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Source code chapter of ‘evidence-based software engineering’ reworked

February 29, 2020
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The Source code chapter of my evidence-based software engineering book has been reworked (draft pdf). When writing the first version of this chapter, I was not certain whether source code was a topic warranting a chapter to itself, in an evidence-based software engineering book. Now I am certain. Source code is the primary product delivery,

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Log transform or log link? And confounding variables. by @ellis2013nz

February 29, 2020
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Log transform or log link? And confounding variables. by @ellis2013nz

Last week I wrote about the relationship between weight and height in US adults, as seen in the US Centers for Disease Control and prevention (CDC) Behavioral Risk Factor Surveillance System, an annual telephone survey of around 400,000 interviews per year. In particular, I tested the widely-circulated claim that Body Mass Index (BMI) exaggerates the “fatness” of tall people...

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matricks 0.8.2 available on CRAN

February 28, 2020
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matricks 0.8.2 available on CRAN

matricks package in 0.8.2 version has been released on CRAN! In this post I will present you, what are advantages of using matricks and how you can use it. Creating matrices The main function the package started with is m. It’s a smart shortcut fo...

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Drawdowns by the data

February 28, 2020
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Drawdowns by the data

We’re taking a break from our series on portfolio construction for two reasons: life and the recent market sell-off. Life got in the way of focusing on the next couple of posts on rebalancing. And given the market sell-off we were too busy gamma hedging our convexity exposure, looking for cheap tail risk plays, and trying to figure out...

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SR2 Chapter 2 Medium

February 28, 2020
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SR2 Chapter 2 Medium

SR2 Chapter 2 Medium Posted on 29 February, 2020 by Brian Tags: statistical rethinking, solutions, conditional probability, counting, grid approximation Category: statistical-rethinking-2 Here’s my solutions to the medium exercises in chapter 2 of...

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What to know before you adopt Hugo/blogdown

Fancy (re-)creating your website using Hugo, with or without blogdown? Feeling a bit anxious? This post is aimed at being the Hugo equivalent of “What to know before you adopt a pet”. We shall go through things that can/will break in the future, and what you can do to prevent future pain. I’m writing this post with R users in mind, which means...

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The significance of the sector on the salary in Sweden, a comparison between different occupational groups, part 3

February 28, 2020
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The significance of the sector on the salary in Sweden, a comparison between different occupational groups, part 3

To complete the analysis on the significance of the sector on the salary for different occupational groups in Sweden I will in this post examine the correlation between salary and sector using statistics for education. The F-value from the Anova table is used as the single value to discriminate how much the region and salary correlates. For exploratory analysis, the...

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How to Acquire Large Satellite Image Datasets for Machine Learning Projects

February 28, 2020
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How to Acquire Large Satellite Image Datasets for Machine Learning Projects

Introduction Historically, only governments and large corporations have had access to quality satellite images. In recent years, satellite image datasets have become available to anyone with a computer and an internet connection. The quality, quantity, and precision of these datasets is continuously improving, and there are many free and commercial platforms at your disposal to Article How to Acquire...

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