Prepare for and practice interview questions from Raisa energy llc.

Raisa energy llc Interview Questions

Raisa energy llc Interview Guides

Machine Learning

How does random forest generate the forest and why use it over logistic regression

Random Forest Explanation

Write a function to calculate precision and recall metrics.

Precision and Recall

Will the accuracy of a random forest model continue to increase as the number of trees increases sequentially

Random Forest Expansion

Let's say that you're training a classification model.   How would you combat overfitting when building tree-based models?

Overfit Avoidance

Statistics

Explain the difference between covariance and correlation and provide an example

Covariance vs Correlation

How does random forest generate the forest? Additionally, why would we use it over other algorithms such as logistic regression?

What happens when you average the output on multiple decision trees?

What happens when you average the output on multiple decision trees?

Average Trees

What is the difference between covariance and correlation? Provide an example.

Given a 2-D matrix P of predicted values and actual values, write a function precision_recall to calculate precision and recall metrics.

Return the ordered pair (precision, recall).

Example:

Input:

<pre tabindex="0" class="chroma"><code>
P = [[121, 9],
 [17, 144]]
</code></pre>

where P represents the following table

<table>
<thead>
<tr>
<th></th>
<th>Predicted =TRUE</th>
<th>Predicted =FALSE</th>
</tr>
</thead>

<tbody>
<tr>
<td>Actual =TRUE</td>
<td>121</td>
<td>9</td>
</tr>

<tr>
<td>Actual =FALSE</td>
<td>17</td>
<td>144</td>
</tr>
</tbody>
</table>
Output:

<pre tabindex="0" class="chroma"><code>def precision_recall(P) -&gt; (0.931, 0.877,)
</code></pre>

Let’s say that you’re training a classification model.

How would you combat overfitting when building tree-based models?

Let’s say you’re working on a random forest model.

If the number of trees in a random forest are increased sequentially, will the accuracy of the model continue to increase?

Calculate Moving Average	SQL	Easy
Predict Customer Churn	Machine Learning	Medium
A/B Test Significance	Statistics	Medium
Optimize Query Performance	SQL	Hard
Feature Importance Analysis	Machine Learning	Medium
Clean Missing Data	Python	Easy
Neural Network Architecture	Deep Learning	Hard
Calculate Cohort Retention	SQL	Medium
Bayesian Probability	Statistics	Easy
Recommend Similar Products	Machine Learning	Hard

Raisa energy llc Interview Questions

Raisa energy llc Interview Guides

Raisa energy llc Interview Questions

Challenge

Discussion & Interview Experiences

Discussion & Interview Experiences