August 2017

Gradient boosting in R

August 24, 2017 | Anish Singh Walia

Boosting is another famous ensemble learning technique in which we are not concerned with reducing the variance of learners like in Bagging where our aim is to reduce the high variance of learners by averaging lots of models fitted on bootstrapped data samples generated with replacement from training data, so ...
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Linear Congruential Generator in R

August 24, 2017 | Aaron Schlegel

Part of 1 in the series Random Number GenerationA Linear congruential generator (LCG) is a class of pseudorandom number generator (PRNG) algorithms used for generating sequences of random-like numbers. The generation of random numbers plays a large role in many applications ranging from cryptography to Monte Carlo methods. Linear congruential... The ... [Read more...]

Reticulating Readability

August 24, 2017 | hrbrmstr

I needed to clean some web HTML content for a project and I usually use hgr::clean_text() for it and that generally works pretty well. The clean_text() function uses an XSLT stylesheet to try to remove all non-“main text content” from an HTML document and it usually ... [Read more...]

Big Data analytics with RevoScaleR Exercises

August 24, 2017 | Biswarup Ghosh

In this set of exercise , you will explore how to handle bigdata with RevoscaleR package from Microsoft R (previously Revolution Analytics).It comes with Microsoft R client . You can get it from here . get the Credit card fraud data set from revolutionanalytics and lets get started Answers to the exercises ... [Read more...]

H2O.ai: Going for a paddle

August 24, 2017 | Mango Solutions

Owen Jones, Placement Student A quick disclaimer: This post isn’t called H2O.ai: Going for the 100m freestyle world record. I’m not trying to win a Kaggle competition. I’m not carrying out detailed, highly-controlled benchmarking tests. I’m not, in fact, claiming to be doing anything ...
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FedData – Getting assorted geospatial data into R

August 24, 2017 | Kyle Bocinsky

The package FedData has gone through software review and is now part of rOpenSci. FedData includes functions to automate downloading geospatial data available from several federated data sources (mainly sources maintained by the US Federal government). Currently, the package enables extraction from six datasets: The National Elevation Dataset (NED) digital ...
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Digit fifth powers: Euler Problem 30

August 23, 2017 | Peter Prevos

Euler problem 30 is another number crunching problem that deals with numbers to the power of five. Two other Euler problems dealt with raising numbers to a power. The previous problem looked at permutations of powers and problem 16 asks for … Continue reading → The post Digit fifth powers: Euler Problem 30 appeared first ...
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Digit fifth powers: Euler Problem 30

August 23, 2017 | Peter Prevos

Euler problem 30 is another number crunching problem that deals with numbers to the power of five. Two other Euler problems dealt with raising numbers to a power. The previous problem looked at permutations of powers and problem 16 asks for … Continue reading → The post Digit fifth powers: Euler Problem 30 appeared first ...
[Read more...]

Control Systems Toolbox – System Interconnection

August 23, 2017 | R Views

Introduction Dynamic systems are usually represented by a model before they can be analyzed computationally. These dynamic systems are systems that change, evolve or have their states altered or varied with time based on a set of defined rules. Dynamic systems could be mechanical, electrical, electronic, biological, sociological, and so ...
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