Amazon MLS-C01 Exam - Topic 7 Question 63 Discussion

Actual exam question for Amazon's MLS-C01 exam

Question #: 63
Topic #: 7

A machine learning specialist is developing a regression model to predict rental rates from rental listings. A variable named Wall_Color represents the most prominent exterior wall color of the property. The following is the sample data, excluding all other variables:

The specialist chose a model that needs numerical input data.

Which feature engineering approaches should the specialist use to allow the regression model to learn from the Wall_Color data? (Choose two.)

AApply integer transformation and set Red = 1, White = 5, and Green = 10.

BAdd new columns that store one-hot representation of colors.

CReplace the color name string by its length.

DCreate three columns to encode the color in RGB format.

EReplace each color name by its training set frequency.

Show Suggested Answer

Suggested Answer: A, D

by Elouise at Sep 18, 2022, 06:19 AM

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Dante

5 months ago

Definitely agree with one-hot representation!

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Sonia

6 months ago

Surprised they didn't mention frequency encoding!

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Kara

6 months ago

Integer transformation seems arbitrary; not a fan.

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Kayleigh

6 months ago

I think using RGB columns could be overkill for this.

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Keneth

6 months ago

One-hot encoding is a solid choice for categorical data!

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Filiberto

6 months ago

I recall a practice question where frequency encoding was mentioned, so option E might be useful too, but I’m not confident it’s the best approach here.

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Garry

6 months ago

I think option D, creating RGB columns, could also work, but I wonder if it might be too complex for this model.

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Providencia

6 months ago

I'm not entirely sure about the integer transformation in option A. It seems a bit arbitrary to assign those specific values to colors.

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Linsey

6 months ago

I remember we discussed one-hot encoding in class, so I think option B is definitely a good choice for handling categorical data like Wall_Color.

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Rory

7 months ago

I'm a little confused by the options. Is the checklist or the department-specific plan also a possibility? I want to make sure I understand the question fully before answering.

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Tommy

7 months ago

Hmm, I'm a bit unsure about this one. The 25-hour limit per resource could be related to expert judgment or organizational process assets. I'll need to think through the differences between those concepts.

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