How to Build Your First KNN Python Model in scikit-learn (K Nearest Neighbors)

Today we are taking a look at how to build a machine learning python K Nearest Neighbors model within Jupyter. This python coding tutorial is a great way to build your first model and is quite easy.

Code:

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Who is Ryan
Ryan is a Data Scientist at a fintech company, where he focuses on fraud prevention in underwriting and risk. Before that, he worked as a Data Analyst at a tax software company. He holds a degree in Electrical Engineering from UCF.

Who is Matt

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[RyanAndMattDataScience]

Few Minor bugs in this video that should be fixed on the final article

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[danielrexrj]

Wouldn't it be better to use X_test = scaler.transform(X_test) instead of X_test = scaler.fit_transform(X_test)?

[Jade-zq]

true negative is on the top left,
false positive is on the top right,
false negative is at the bottom left,
true positive is at the bottom right

[aineshbalaga]

Why don’t we use StandardScaler for this one?

[khushgora]

why did we use fit_transform foe test data as well ? instead of only transform

[soyroian]

Hey Ryan, I'm trying to follow along. Will there be a link to the CSV file? Thank you in advance.

[arulkumaransendilvel]

what is difference between scaler.fit() and scaler.fit_transform() ⁉

[ShiftKoncepts]

Are you able to do the scaling first before train test split?

[shihamfarook]

can you explain why did you choose n_neighbors as 8

[chizitereigwe]

Funniest tutorial intro in history. #RogerClemens #BarryBonds #PeteRose