We’re into the fourth day of Business Science Demo Week. We have a really cool one in store today: tibbletime, which uses a new tbl_time class that is time-aware!! For those that may have missed it, every day this week we are demo-ing an R package: tidyquant (Monday), ... [Read more...]

Two new Microsoft webinars are taking place over the next week that may be of interest: AI Development in Azure using Data Science Virtual Machines The Azure Data Science Virtual Machine (DSVM) provides a comprehensive development and production environment to Data Scientists and AI-savvy developers. DSVMs are specialized virtual machine ... [Read more...]

STREAK RESULTS FOR LIKELY (__50%) and HIGHLY LIKELY (__99%) Click to enlarge From research on the hot hand to the observation that people don’t create enough streaks when instructed to create pseudo random data, the decision science community is pretty interested in the perception of streaks. One day we got to ... [Read more...]

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In this day and age of so many sharing services like Uber and Lyft , pricey hotels are being replaced by Airbnb. Students, working people and travelers wouldn’t always want to pay a high price for staying a couple of nights at the Marriott and would rather stay at a ... [Read more...]

This is rather a short note, which is more related to an amazing package caret, than to our data set. The package allows for manipulating the model with less typing, for instance cross-validation or data preprocessing can be done by just specifying a couple of arguments in the key function ... [Read more...]

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We’re into the third day of Business Science Demo Week. Hopefully by now you’re getting a taste of some interesting and useful packages. For those that may have missed it, every day this week we are demo-ing an R package: tidyquant (Monday), timetk (Tuesday), sweep (Wednesday), tibbletime (Thursday) ... [Read more...]

The slackr package, by Bob Rudis, contains functions that make it possible to interact with the Slack messaging platform. The great part of Slack is that it has mobile devices application interface. We take advantage of this by extending slackr’s interaction with with the server: Write to a channel (... [Read more...]

R has a rich and infinitely flexible graphics system, and you can easily embed R graphics into Microsoft Office documents like PowerPoint or Word. The one thing I dread hearing after delivering such a document, though, is "how can I tweak that graphic?". I could change the colors or fonts ... [Read more...]

Some Announcements: Dr. Nina Zumel will be presenting “Myths of Data Science: Things you Should and Should Not Believe”, Sunday, October 29, 2017 10:00 AM to 12:30 PM at the She Talks Data Meetup (Bay Area). ODSC West 2017 is soon. It is our favorite conference and we will be giving both a workshop and … ... [Read more...]

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CRAN contains up to date (October 2017) more than 11500 R packages. If you want to scroll through all of these, you probably need to spend a few days, assuming you need 5 seconds per package and there are 8 hours in a day. Since R version 3.4, we can also get a dataset will ... [Read more...]

Kmeans is one of the most popular and simple algorithm to discover underlying structures in your data. The goal of kmeans is simple, split your data in k different groups represented by their mean. The mean of each group is assumed to be a good summary of each observation of ... [Read more...]

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We’re into the second day of Business Science Demo Week. What’s demo week? Every day this week we are demoing an R package: tidyquant (Monday), timetk (Tuesday), sweep (Wednesday), tibbletime (Thursday) and h2o (Friday)! That’s five packages in five days! We’ll give you intel on ... [Read more...]