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Air India ml engineer Interview Questions, Process, and Tips

Updated 17 Oct 2023

Air India ml engineer Interview Experiences

1 interview found

ml engineer Interview Questions & Answers

user image Monami Jaiswal

posted on 17 Oct 2023

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
No response

I applied via Referral and was interviewed in Apr 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Coding Test 

Data science, ML concepts, statistics, python output

Round 3 - Technical 

(7 Questions)

  • Q1. What does correlation mean? what is the interpretation if the correlation is 0?
  • Ans. 

    Correlation measures the strength and direction of a relationship between two variables. A correlation of 0 indicates no linear relationship.

    • Correlation measures the degree to which two variables move in relation to each other. It ranges from -1 to 1.

    • A correlation of 0 means there is no linear relationship between the variables. They are not related in a linear fashion.

    • For example, if the correlation between hours of s...

  • Answered by AI
  • Q2. What is collinearity, how to handle it? also for multicollinearity
  • Q3. How to evaluate regression models? explain r squared and adjusted r squared and difference between them
  • Ans. 

    Regression models can be evaluated using R squared and adjusted R squared to measure the goodness of fit.

    • R squared measures the proportion of the variance in the dependent variable that is predictable from the independent variables.

    • Adjusted R squared adjusts for the number of predictors in the model, providing a more accurate measure of goodness of fit.

    • R squared can be artificially inflated by adding more predictors, w...

  • Answered by AI
  • Q4. Explain regularization techniques, difference between ridge and lasso?
  • Ans. 

    Regularization techniques help prevent overfitting in machine learning models. Ridge regression adds L2 regularization, while Lasso regression adds L1 regularization.

    • Regularization techniques help prevent overfitting by adding a penalty term to the loss function.

    • Ridge regression adds the squared magnitude of coefficients as penalty term (L2 regularization).

    • Lasso regression adds the absolute magnitude of coefficients as...

  • Answered by AI
  • Q5. Explain working of decision trees, how to select parent and child nodes, gini impurity, etc?
  • Ans. 

    Decision trees are a popular machine learning algorithm used for classification and regression tasks.

    • Decision trees are a flowchart-like structure where each internal node represents a feature or attribute, each branch represents a decision rule, and each leaf node represents the outcome.

    • To select parent and child nodes, the algorithm calculates the best split at each node based on criteria like Gini impurity or inform...

  • Answered by AI
  • Q6. Bagging and boosting and their difference, what is ensemble models, how to handle overfitting, explain precision recall roc curve
  • Ans. 

    Explanation of bagging, boosting, ensemble models, handling overfitting, and precision-recall-ROC curve.

    • Bagging (Bootstrap Aggregating) involves training multiple models on different subsets of the training data and combining their predictions through averaging or voting.

    • Boosting involves training multiple models sequentially, with each model correcting the errors of its predecessor.

    • Ensemble models combine multiple ind...

  • Answered by AI
  • Q7. Create dictionary in python from 2 list and key values, sql query for window functions-Rank(), all joins in sql
  • Ans. 

    Creating dictionary in Python from 2 lists, using window functions and joins in SQL

    • To create a dictionary in Python from 2 lists and key values, you can use the zip() function

    • Example: dict(zip(keys_list, values_list))

    • For SQL window functions like Rank(), you can use the OVER() clause

    • Example: SELECT column1, column2, RANK() OVER(ORDER BY column3) AS rank_column FROM table_name

    • For SQL joins, you can use INNER JOIN, LEFT ...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Air India ml engineer interview:
  • Data Science
  • Machine Learning

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed in Nov 2020.

Interview Questionnaire 

1 Question

  • Q1. Job profile Question. Managerial skill question. Basic Engineering question.

Interview Preparation Tips

Interview preparation tips for other job seekers - Basic engineering concept.
Application software know how knowledge.

I applied via Other and was interviewed in Nov 2019. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Written test , objective + two programs to write
  • Q2. Question on linked list , stack

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well and be confident while answering
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Very good coding test ques of linked list were asked

Round 2 - HR 

(1 Question)

  • Q1. About my work experience & background

Analyst Interview Questions & Answers

Go First user image Harsh Yadav

posted on 20 Sep 2024

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Good questions like what is data science

Round 2 - Coding Test 

What is python boss was a good

Interview Preparation Tips

Interview preparation tips for other job seekers - iusseybsds
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Job Portal and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Aerospace, Airplane related SW need to meet the DO178C, asking experiences with this

Round 2 - Case Study 

Related experiences and roles about the project with used DO178c

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via Referral and was interviewed in May 2024. There was 1 interview round.

Round 1 - Coding Test 

Hackerrank test of 2 questions

Interview experience
1
Bad
Difficulty level
Easy
Process Duration
-
Result
No response
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. FHA is performed
  • Q2. Flow of requirements tight from beginning
  • Ans. 

    Flow of requirements should be tight from the beginning to ensure project success.

    • Establish clear and specific requirements from stakeholders

    • Document requirements in a detailed manner

    • Regularly review and update requirements as needed

    • Ensure all team members understand and agree on requirements

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Apr 2023. There was 1 interview round.

Round 1 - HR 

(1 Question)

  • Q1. Life cycle of Software Development
  • Ans. 

    Software development life cycle is a process used to design, develop, and test software applications.

    • 1. Planning: Define project scope, requirements, and timelines.

    • 2. Design: Create a detailed design of the software architecture.

    • 3. Implementation: Write code based on the design specifications.

    • 4. Testing: Verify that the software meets the requirements and is free of bugs.

    • 5. Deployment: Release the software to users and...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Do a lot of behavioral question prep

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
-
Result
Selected Selected

I applied via Naukri.com

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Aptitude Test 

Were very hard questions and all were related to basic arithmetic and analytics and statistics.

Round 3 - HR 

(2 Questions)

  • Q1. What is the expected salary and current work profile.
  • Q2. About my skills and expertise.

Interview Preparation Tips

Interview preparation tips for other job seekers - Clear your all basics first interviewer never ask you a very hard things.
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Air India Interview FAQs

How many rounds are there in Air India ml engineer interview?
Air India interview process usually has 3 rounds. The most common rounds in the Air India interview process are Resume Shortlist, Coding Test and Technical.
What are the top questions asked in Air India ml engineer interview?

Some of the top questions asked at the Air India ml engineer interview -

  1. How to evaluate regression models? explain r squared and adjusted r squared and...read more
  2. bagging and boosting and their difference, what is ensemble models, how to hand...read more
  3. Explain working of decision trees, how to select parent and child nodes, gini i...read more

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Air India ml engineer Interview Process

based on 1 interview

Interview experience

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