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Databricks Machine Learning Professional Exam - Topic 3 Question 37 Discussion

A data scientist has developed and logged a scikit-learn random forest model model, and then they ended their Spark session and terminated their cluster. After starting a new cluster, they want to review the feature_importances_ of the original model object.Which of the following lines of code can be used to restore the model object so that feature_importances_ is available?
A) mlflow.load_model(model_uri)
B) client.list_artifacts(run_id)['feature-importances.csv']
C) mlflow.sklearn.load_model(model_uri)
D) This can only be viewed in the MLflow Experiments UI
E) client.pyfunc.load_model(model_uri)

Databricks Machine Learning Professional Exam - Topic 3 Question 37 Discussion

Actual exam question for Databricks's Databricks Machine Learning Professional exam
Question #: 37
Topic #: 3
[All Databricks Machine Learning Professional Questions]

A data scientist has developed and logged a scikit-learn random forest model model, and then they ended their Spark session and terminated their cluster. After starting a new cluster, they want to review the feature_importances_ of the original model object.

Which of the following lines of code can be used to restore the model object so that feature_importances_ is available?

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Suggested Answer: A

by Chantell at Mar 19, 2025, 04:30 PM

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Miriam
7 months ago
I’m not sure about D, I thought we could access it programmatically.
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Anika
7 months ago
Wait, can you really only view it in the UI? That seems odd!
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Sage
7 months ago
Definitely agree with C, it’s the proper way to load scikit-learn models.
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Luz
7 months ago
Option A is also a valid choice, but not for scikit-learn models.
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Ivan
7 months ago
I think option C is the right one!
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Alex
8 months ago
I thought we could only view feature importances in the UI, but I feel like there's a way to load the model directly too.
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Merlyn
8 months ago
I vaguely recall that `client.list_artifacts` is used for listing files, but I don't think it actually loads the model.
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Kerry
8 months ago
I think we practiced a similar question where we had to retrieve model artifacts. I feel like option C is the right one since it specifies sklearn.
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Mirta
8 months ago
I remember we discussed how to load models with MLflow, but I'm not sure if it's `mlflow.load_model` or `mlflow.sklearn.load_model`.
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Mozelle
9 months ago
Hmm, I'm not sure about this one. I'll have to review my notes on MLflow and model persistence to make the best choice.
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Selene
9 months ago
Ah, I think I've got it! The key is that the data scientist terminated their Spark cluster, so we need to use a method that doesn't rely on the Spark session.
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Farrah
9 months ago
Wait, I'm a bit confused. Isn't there something about Spark in the question? I wonder if that changes how we need to approach this.
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Lorean
9 months ago
Okay, let's see. I'm pretty sure I've used mlflow.load_model() before to restore a model, so that's my first guess.
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Lauran
9 months ago
Hmm, this looks like a tricky one. I'll need to think through the options carefully to make sure I don't miss anything.
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Tawna
1 year ago
Option C is the way to go. Hey, at least it's not asking us to restore the model from a backup tape or something!
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Lavera
1 year ago
Yeah, MLflow is a lifesaver when it comes to managing and restoring model objects.
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Arlene
1 year ago
Option C is definitely the right choice. MLflow makes it easy to load the model object.
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Patrick
1 year ago
I think D) This can only be viewed in the MLflow Experiments UI is incorrect because we need to access the feature_importances_ in the code
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Fairy
1 year ago
I'm going with C. Gotta love those scikit-learn-specific utilities, they make my life so much easier. *sarcasm intensifies*
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Ezekiel
1 year ago
I'm not sure, but I think A) mlflow.load_model(model_uri) might also work since it's a general model loading function in MLflow
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Bok
1 year ago
D is a joke, right? I'm not gonna look at feature importances in the MLflow UI, that's what the code is for!
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Hana
1 year ago
E) client.pyfunc.load_model(model_uri)
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Louvenia
1 year ago
C) mlflow.sklearn.load_model(model_uri)
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Quentin
1 year ago
A) mlflow.load_model(model_uri)
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Lea
1 year ago
I agree with Monroe, because mlflow.sklearn.load_model(model_uri) is specifically for loading scikit-learn models
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Glen
1 year ago
I'm not sure why you can't just use `mlflow.load_model()` to restore the model. Seems like a waste of time to have a separate function for scikit-learn models.
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Louis
1 year ago
I'm not sure why you can't just use `mlflow.load_model()` to restore the model. Seems like a waste of time to have a separate function for scikit-learn models.
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Dottie
1 year ago
C) mlflow.sklearn.load_model(model_uri)
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Wenona
1 year ago
A) mlflow.load_model(model_uri)
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Monroe
1 year ago
I think the correct answer is C) mlflow.sklearn.load_model(model_uri)
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Jutta
1 year ago
Option C looks like the correct answer. You can use `mlflow.sklearn.load_model()` to restore the original model object and access the `feature_importances_`.
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Kanisha
1 year ago
Great, thanks for confirming!
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Zena
1 year ago
Yes, you are correct. `mlflow.sklearn.load_model()` can be used to restore the model object.
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Irma
1 year ago
I think option C is the right choice.
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