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What is a Positive Definite Matrix?

What is a Positive Definite Matrix?

and why does it matter?
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Ms Aerin
Chi Square Test — Intuition, Examples, and Step-by-Step Calculation

Chi Square Test — Intuition, Examples, and Step-by-Step Calculation

The best way to see if two variables are related.
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Ms Aerin
[Text-to-SQL] Learning to query tables with natural language

[Text-to-SQL] Learning to query tables with natural language

How to model a natural language interface for relational databases
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Ms Aerin
Why is the second Principal Component orthogonal (perpendicular) to the first one?

Why is the second Principal Component orthogonal (perpendicular) to the first one?

Because the second Principal Component should capture the highest variance from what is left after the first Principal Component explains…
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Ms Aerin
The difference between Batch Gradient Descent and Stochastic Gradient Descent

The difference between Batch Gradient Descent and Stochastic Gradient Descent

[WARNING: TOO EASY!]
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Ms Aerin
Numpy Sum Axis Intuition

Numpy Sum Axis Intuition

I’ve always thought that axis 0 is row-wise, and axis 1 is column-wise.
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Ms Aerin
P=NP would mean we’re a bunch of dumb apes

P=NP would mean we’re a bunch of dumb apes

Why should you care about complexity theory anyway?
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Rohit Pandey
Data science in battle: Applying graph theory to the Ukraine war

Data science in battle: Applying graph theory to the Ukraine war

The Google maps team can totally swing this battle if they wanted to
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Rohit Pandey
How to tell a distribution has no mean by just looking at its PDF

How to tell a distribution has no mean by just looking at its PDF

Might want to check this out if you enjoy explosions.
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Rohit Pandey
Let’s derive Chi-Squared PDF from normal distribution *intuitively*

Let’s derive Chi-Squared PDF from normal distribution *intuitively*

We can calculate the probability density function (PDF) of a random variable from its cumulative distribution function (CDF) using…
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Ms Aerin
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