Articles by Jerry Tuttle

How do I count thee? Let me count the ways?

November 1, 2022 | Jerry Tuttle

How do I count thee? Let me count the ways? by Jerry Tuttle    In Major League Baseball, a player who hits 50 home runs in a single season has hit a lot of home runs. Suppose I want to count the number of 50 homer seasons by team, and also the number ...
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Find the next number in the sequence

October 29, 2022 | Jerry Tuttle

Between ages two and four, most children can count up to at least ten. If you ask your child, "What number comes next after 1, 2, 3, 4, 5?" they will probably say "6." But to math nerds, any number can be the next number in a finite sequence. I like -14. Given a sequence of ...
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How do I count thee? Let me count the ways?

September 17, 2022 | Jerry Tuttle

by Jerry Tuttle    In Major League Baseball, a player who hits 50 home runs in a single season has hit a lot of home runs. Suppose I want to count the number of 50 homer seasons by team, and also the number of 50 homer seasons by New York Yankees. (I will count ...
[Read more...]

ROC for Decision Trees – where did the data come from?

August 8, 2020 | Jerry Tuttle

ROC for Decision Trees – where did the data come from? By Jerry Tuttle       In doing decision tree classification problems, I have often graphed the ROC (Receiver Operating Characteristic) curve. The True Positive Rate (TPR) is on the y-axis, and the False Positive Rate (FPR) is on the x-axis. True Positive ... [Read more...]

Outliers and Domain Knowledge

July 10, 2020 | Jerry Tuttle

by Jerry Tuttle       I would like to share some thoughts about outliers and domain knowledge.       One of the common steps during the data exploration stage is the search for outliers. Some analysis methods such as regression are very sensitive to outliers. As an example of sensitivity, in the following data (10,10) ... [Read more...]
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