Quiz · 4 questions

↗️ Vectors: Magnitude × Direction

The carrier across multidimensional space

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Quiz

01What does a vector have that a scalar doesn't?

02What's the difference between np.array(5) and np.array([5]) in NumPy?

Hint

Print .shape on each — that's the tell.

03What does the dot product secretly measure?

04Why does L1 regularization (penalizing the sum of absolute weights) tend to drive some weights *exactly* to zero, while L2 regularization just makes them small?

Hint

Think about what 'gradient near zero' looks like for each penalty.

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