Dan Oehm | Gradient Descending

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Tag: R

Data Science R

Q-learning example with Liar’s Dice in R

December 20, 2018 Daniel Oehm 0 Comments

In my last post I coded Liar’s Dice in R and some brainless bots to play against. I build on […]

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Data Science R

Liar’s Dice in R

November 24, 2018 Daniel Oehm

I have been playing Red Dead Redemption 2, immersing myself in the Old West as I did with the first […]

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Data Science R

Bayesian Network Example with the bnlearn Package

October 1, 2018 Daniel Oehm 0 Comments

Bayesian Networks are probabilistic graphical models and they have some neat features which make them very useful for many problems. […]

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Data Science R

Simple Parallel Processing in R

September 15, 2018 Daniel Oehm 0 Comments

I recently purchased a new laptop with an Intel i7-8750 6 core CPU with multi-threading meaning I have 12 logical […]

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Data Science R

Cribbage: Optimal Hand (part 1)

September 8, 2018 Daniel Oehm

Cribbage is one of my favourite card games and have been playing it ever since I could count. It is […]

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Data Science R

Probability of Selecting Matched Pairs and the Hypergeometric Distribution

August 8, 2018 Daniel Oehm 0 Comments

The problem Consider a case where we have a bag of marbles of size . The bag consists of black […]

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Data Science R

PCA vs Autoencoders for Dimensionality Reduction

July 28, 2018 Daniel Oehm 0 Comments

There are a few ways to reduce the dimensions of large data sets to ensure computational efficiency such as backwards […]

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Data Science R

Confidentialise Your Data with the randomNames Package

July 23, 2018 Daniel Oehm 0 Comments

Sensitive data has it’s restrictions for good reason. Personal data such as names and other identifiable information should be protected. […]

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Data Science R

Advanced Survey Design and Application to Big Data

July 11, 2018 Daniel Oehm 2 Comments

I like to describe Official statistics as the All Bran of statistics, it’s bland and a bit boring but it […]

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Data Science R

Deep Neural Network from Scratch in R

June 15, 2018 Daniel Oehm 0 Comments

Neural networks evolved in the computer science domain are often the first thing people think of when they hear machine […]

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Data Science R

Unsupervised Random Forest Example

June 8, 2018 Daniel Oehm 2 Comments

A need for unsupervised learning or clustering procedures crop up regularly for problems such as customer behavior segmentation, clustering of […]

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Data Science R

Design Matrix for Regression Explained

June 7, 2018 Daniel Oehm 1 Comment

Recently I was asked about the design matrix (or model matrix) for a regression model and why it is important. […]

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Data Science R

Introduction to Outlier Detection

June 5, 2018 Daniel Oehm 0 Comments

Outlier detection and treatment is an important part of data analysis and one of the first things you should do […]

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Data Science

Singular Value Decomposition: Image Compression

May 12, 2018 Daniel Oehm 0 Comments

Singular value decomposition (SVD) is a matrix factorisation technique. It is a method to factorise any given matrix into 3 […]

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Data Science R

What is the Bayes Factor anyway?

May 10, 2018 Daniel Oehm 0 Comments

The Bayes Factor is a quantitative measure of much evidence there is for hypothesis A relative to hypothesis B given […]

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I'm pleased to be a contributor to R Bloggers. It is where you will find most of my posts featuring R.
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