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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 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 applied via LinkedIn and was interviewed in Nov 2021. 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 tips
Round 2 - Aptitude Test 

Be confident

Round 3 - HR 

(1 Question)

  • Q1. General communication

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and be good in communication
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 tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. There were questions of DSA, DBMS, OS etc
  • Q2. There were questions around project that were mentioned in resume.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare around Data structures and algorithms, Database management system, Operating system, projects that you have already done.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before May 2023. There were 2 interview rounds.

Round 1 - Coding Test 

Medium to hard level questions were asked and that mostly covers basics of DSA

Round 2 - Technical 

(1 Question)

  • Q1. Oops ,DBMS and DSA logical questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Asked about the project

I appeared for an interview in Jun 2016.

Interview Preparation Tips

Round: Resume Shortlist
Tips: 1.Keep you resume simple and use the right keywords
2.Name your resume.
3.Use appropriate headings.
4. Only provide those details which is required for the job.

Round: Technical Interview
Tips: 1. Be specific while giving any answer.
2. Take your time to answer.
3. Be consice.
4.Be strong in the basics.



Skills: Leadership Skills, Problem Solving Abilties, Communication skills
College Name: Maharaja Surajmal Institute of Technology

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

I appeared for an interview 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 Naukri.com and was interviewed in May 2021. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Situational awareness
  • Q2. Psychological test

Interview Preparation Tips

Interview preparation tips for other job seekers - Boing has been known as a great organisation for long time, they are manufacturers of the most sophisticated civilan and defence supplies. However their interview process is completely idiotic, even if you are extremely talented and have cleared all technical rounds, they used to reject candidates in the final psychological (structured) round where they form opinion for the canditate based on questions asked, answer in a very calculated way for this final round.
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 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.

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 Coding Test, Technical and Resume Shortlist.
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

4
  
Good
View more

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