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Capri Granville
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  • Issaquah, WA
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Capri Granville's Discussions

Who is using regression models with interactions?

Started this discussion. Last reply by Andrew Reid Mar 15. 2 Replies

I believe biostatisticians use it, especially with small data sets, in the context of clinical trials, especially when using dummy variables (e.g. 0/1 for gender.) I am wondering how decision trees…Continue

AI: Miniaturization of Robots

Started this discussion. Last reply by Michael Rawson May 18, 2018. 2 Replies

Maybe this seems like science fiction, but I was wondering if some companies are developing robots that are so small, that they are about the size of a virus. You could imagine a swarm of robotic…Continue

Is it better to overpredict, or underpredict?

Started this discussion. Last reply by Ethan Scott Mar 14, 2018. 5 Replies

Weather predictions are notoriously difficult for the Seattle area. I have seen many instances in which snow was predicted (say 1 to 3 inches) while the actual amount was much smaller. I assume that…Continue

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Capri Granville's blog post was featured

New Data Science Cheat Sheet, by Maverick Lin

Below is an extract of a 10-page cheat sheet about data science, compiled by Maverick Lin. This cheatsheet is currently a reference in data science that covers basic concepts in probability, statistics, statistical learning, machine learning, deep learning, big data frameworks and SQL. The cheatsheet is loosely based off of The Data Science Design Manual by Steven S. Skiena and An Introduction to Statistical Learning by Gareth James, Daniela Witten, Trevor Hastie and Robert Tibshirani. Inspired…See More
4 hours ago
0 Comments
Tauheedul Ali liked Capri Granville's blog post The Typical Data Scientist Profile, in a few Pictures
Apr 19
Capri Granville posted a blog post

Data analysis and visualization in Perl

Guest blog by Stephan Loyd.Hello everybody, this is my first post here, so forgive me if I screw it up.Let me firstly introduce background of my work. Several years ago I landed onto a Perl job. It also involves some other languages like Python and R, but it was mainly Perl, until last year focus of my role switched and I still do some Perl but much less since then. I was a little bit sad. Perl is indeed a…See More
Apr 14
0 Comments
Prasanth liked Capri Granville's blog post Machine Learning Process Summarized in Two Pictures
Apr 13
Capri Granville posted a blog post

Excel Cheat Sheet

This 12-page document lists hundreds of Excel functions and formulas, covering Lookup/Ref FunctionsString/Text FunctionsDate/Time FunctionsMath/Trig FunctionsStatistical FunctionsLogical FunctionsInformation FunctionsFinancial FunctionsDatabase FunctionsEngineering FunctionsFile/Directory FunctionsData Type Conv. FunctionsMore Lookup FunctionsOtherBelow is an extract, featuring a few of the statistical functions:…See More
Apr 7
0 Comments
Capri Granville posted a blog post

30 DeepTech News Briefs

This is the fourth article in a DeepTech Series by Margaretta Colangelo and Dmitry Kaminskiy. Dmitry Kaminskiy, General Partner at Deep Knowledge Ventures, is based in London. Dmitry is Managing Trustee of the Biogerontology Research Foundation. …See More
Apr 4
0 Comments
Capri Granville posted a blog post

[New book] Info We Trust: How to Inspire the World with Data

Creating Info We Trust is a craft that puts the world into forms that are strong and true.  It begins with maps, diagrams, and charts — but must push further than dry defaults to be truly effective. How do we attract attention? How can we offer audiences valuable experiences worth their time? How can we help people access complexity?Dark and mysterious, but full of…See More
Apr 3
0 Comments
John Lewis liked Capri Granville's blog post 3 Types of Regression in One Picture
Mar 19
Afraz Syed liked Capri Granville's discussion Is it better to overpredict, or underpredict?
Mar 18
Raymond Staess commented on Capri Granville's blog post How the Brain Interprets Visualizations
"Agree, this sort of representation doesn't help as a data visualization. I wouldn't "compare values ... with a nice picture" at all. First, a pair of pictures like this and the details on them (esp. on the bigger one) distract…"
Mar 18
Andrew Reid replied to Capri Granville's discussion Who is using regression models with interactions?
"Hi Capri, Forgive me if I've got the 'wrong-end-of-the-stick' here but I am always cautious about using categorical variables (especially those with few 'categories') in interactive effects. In the illustration used here, it…"
Mar 15
John Williams replied to Capri Granville's discussion Who is still using regression models with interactions?
"Is this a question or a statement? The title of the article seems to imply that modelling interactions is passé, but the text of the article seems to advocate doing it. So I'm a little confused. If it's a question, then the answer…"
Mar 14
Capri Granville's blog post was featured

How the Brain Interprets Visualizations

I was comparing home prices in San Francisco between 1994 and 2018, and I noticed that it has increased by a factor 4 over 25 years. In the meanwhile, the inflation index increased by a factor 1.7 (see here.) I am not saying here that my sources are correct or wrong -- entire books have been written on the subject -- but instead, my purpose here is to show how some visualizations can be…See More
Mar 14
1 Comment
Tauheedul Ali liked Capri Granville's blog post How the Brain Interprets Visualizations
Mar 12
Capri Granville posted a discussion

Who is still using regression models with interactions?

I believe biostatisticians use it, especially with small data sets, in the context of clinical trials, especially when using dummy variables (e.g. 0/1 for gender.) I am wondering how decision trees and other models compare with interaction regression. I would think the interaction regression  model suffers from the same issues as polynomial…See More
Mar 12
2 Comments
Vikram Dutt liked Capri Granville's blog post Probability Cheat Sheet - Harvard University
Mar 11

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Capri Granville's Blog

Data analysis and visualization in Perl

Posted on April 14, 2019 at 6:30pm 0 Comments

Guest blog by Stephan Loyd.

Hello everybody, this is my first post here, so forgive me if I screw it up.

Let me firstly introduce background of my work. Several years ago I landed onto a Perl job. It also involves some other languages like Python and R, but it was mainly Perl, until last year focus of my role switched and I still do some Perl but much less since then. I was a little…

Continue

Excel Cheat Sheet

Posted on April 7, 2019 at 6:30am 0 Comments

This 12-page document lists hundreds of Excel functions and formulas, covering 

  • Lookup/Ref Functions
  • String/Text Functions
  • Date/Time Functions
  • Math/Trig Functions
  • Statistical Functions
  • Logical Functions
  • Information Functions
  • Financial Functions
  • Database Functions
  • Engineering Functions
  • File/Directory Functions
  • Data Type Conv. Functions
  • More Lookup…
Continue

30 DeepTech News Briefs

Posted on April 4, 2019 at 10:30am 0 Comments

This is the fourth article in a DeepTech Series by Margaretta Colangelo and Dmitry Kaminskiy. Dmitry Kaminskiy, General Partner at Deep Knowledge Ventures, is based in London. Dmitry is Managing Trustee…

Continue

[New book] Info We Trust: How to Inspire the World with Data

Posted on April 3, 2019 at 8:00am 0 Comments

Creating Info We Trust is a craft that puts the world into forms that are strong and true.  It begins with maps, diagrams, and charts — but must push further than dry defaults to be truly effective. How do we attract attention? How can we offer audiences valuable experiences worth their time? How can we help people access complexity?…

Continue

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At 7:07am on September 22, 2018, aman Ullah said…

Question: A researcher is interested in actual data to research in patterns and build a model for prediction. My question is that if a researcher is interested in actual data why we transform data?

 
 
 

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