abs and relu are not Mercer Kernels

December 25, 2020 | jmount

I am sharing some rough notes (in R and Python) here on how while dot(a, b) fulfills “Mercer’s condition” (by definition!, and I’ll just informally call these beasts a “Mercer Kernel”), the seemingly harmless variations abs(dot(a, b)) relu(dot(a, b)) are not Mercer Kernels (... [Read more...]

Covid-19 shinyapp

December 25, 2020 | Firas Fneish

The raw data of this shinyapp is pulled and displayed data Johns Hopkins University Center for Systems Science and Engineering (JHU CCSE). The data is available on {Github}. The data is updated on daily basis. The latest date of the data presented is as of 2020-12-24. If any further ...
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RcppDeepState Analysis

December 25, 2020 | Akhila Chowdary Kolla

Over the past few months, I have been working on testing the Rcpp packages using RcppDeepState in the cluster. When we fuzz test each Rcpp function-specific testharness I have found issues in 134 packages. Refer the web page to check if your Rcpp pack... [Read more...]

Covid-19 Shinyapp

December 24, 2020 | Statistics & R

The data displayed by this {shinyapp} is taken from Johns Hopkins University Center for Systems Science and Engineering (JHU CCSE). The raw data is available on {Github}. The data is updated on daily basis. Packages needed for the app: library(easypac...
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Bounding Excess Generalization Error

December 23, 2020 | jmount

I am sharing a new free video where I work through a great common argument that bounds expected excess generalization error as a ratio of model complexity (in rows) over training set size (again in rows), independent of problem dimension. (link) For more of my notes on support vector machines […] [Read more...]

Exploring US COVID-19 Cases and Deaths

December 22, 2020 | Art Steinmetz

In this post, RStudio is pleased to once again feature Arthur Steinmetz, former Chairman, CEO, and President of OppenheimerFunds. Art is an avid amateur data scientist and is active in the R statistical programming language community. We’ve reformatted and lightly edited Art’s post for clarity here. You can ...
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A shiny app for exploratory data analysis

December 22, 2020 | kjytay

I recently learnt how to build basic R Shiny apps. To practice using Shiny, I created a simple app that you can use to perform simple exploratory data analysis. You can use the app here to play around with the … Continue reading →
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