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Lam Research Data Scientist Interview Questions and Answers

Updated 15 Aug 2024

Lam Research Data Scientist Interview Experiences

1 interview found

Data Scientist Interview Questions & Answers

user image Namita Menon

posted on 15 Aug 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
-
Result
Not Selected
Round 1 - Technical 

(1 Question)

  • Q1. Dropout in. Deep learning

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Oct 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is Adaboost?
  • Ans. 

    Adaboost is a machine learning algorithm that combines multiple weak learners to create a strong learner.

    • Adaboost stands for Adaptive Boosting.

    • It works by adjusting the weights of incorrectly classified instances so that subsequent weak learners focus more on them.

    • The final prediction is made by combining the predictions of all the weak learners, weighted by their accuracy.

    • Example: Adaboost is commonly used in face det

  • Answered by AI
  • Q2. Print the binary tree in different order
  • Ans. 

    Printing a binary tree in different orders

    • Use inorder traversal to print the binary tree in ascending order

    • Use preorder traversal to print the binary tree in root-left-right order

    • Use postorder traversal to print the binary tree in left-right-root order

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Aug 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Program complexity.
  • Q2. Code efficiency
Round 2 - HR 

(2 Questions)

  • Q1. What do you like about AMAT?
  • Ans. 

    AMAT is a leading provider of semiconductor manufacturing equipment and services.

    • AMAT is known for its cutting-edge technology and innovation in the semiconductor industry.

    • I appreciate AMAT's commitment to research and development, constantly pushing the boundaries of what is possible.

    • The company has a strong global presence and a track record of delivering high-quality products and services.

    • AMAT's focus on sustainabil...

  • Answered by AI
  • Q2. How do you like working?
  • Ans. 

    I enjoy working in a collaborative environment where I can use my analytical skills to solve complex problems.

    • I thrive in environments where I can work with a team to brainstorm ideas and solutions.

    • I appreciate opportunities to use data analysis techniques to uncover insights and drive decision-making.

    • I value a work culture that encourages continuous learning and professional growth.

    • I find satisfaction in overcoming ch...

  • Answered by AI
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before May 2023. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. How Decision tree works
  • Ans. 

    Decision tree is a predictive modeling tool that uses a tree-like graph of decisions and their possible consequences.

    • Decision tree splits data into subsets based on the value of a certain attribute

    • It recursively divides data into smaller subsets until a stopping criterion is met

    • Each internal node represents a decision based on an attribute, and each leaf node represents the outcome

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. How pressure varies wrt temperature
  • Ans. 

    Pressure generally increases with temperature due to the kinetic energy of gas molecules.

    • Pressure is directly proportional to temperature in a closed system (Boyle's Law).

    • As temperature increases, gas molecules move faster and collide with the container walls more frequently, increasing pressure.

    • For example, a balloon inflated indoors may burst when taken outside on a hot day due to increased pressure from higher tempe

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. What challenges you faced
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Jul 2024. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Explain about the project
  • Ans. 

    Developed a machine learning model to predict customer churn for a telecom company

    • Used historical customer data to train the model

    • Implemented various classification algorithms such as logistic regression, random forest, and XGBoost

    • Evaluated model performance using metrics like accuracy, precision, recall, and F1 score

  • Answered by AI
  • Q2. Basic SQLQuestions
Round 2 - Panel interview 

(2 Questions)

  • Q1. Intermediate level SQL questions
  • Q2. Intermediate level python/machine learning questions
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Jul 2023. There were 3 interview rounds.

Round 1 - Coding Test 

Binary tree question was asked

Round 2 - Technical 

(1 Question)

  • Q1. Several tech question related to past projects and random forest etc were asked.
Round 3 - HR 

(1 Question)

  • Q1. Tell me about yourself and several other questions
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Jul 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Few standard dsa questions were asked.

Round 2 - HR 

(2 Questions)

  • Q1. Explain projects
  • Ans. 

    Projects are specific tasks or assignments that require a set of skills and resources to achieve a particular goal or outcome.

    • Projects involve defining objectives and deliverables

    • They require planning, execution, and monitoring

    • Projects often have timelines and budgets

    • Examples: Data analysis project to identify customer trends, Project to implement a new software system

  • Answered by AI
  • Q2. Introduce urself
  • Ans. 

    I am a data analyst with a strong background in statistics and data visualization.

    • I have a Bachelor's degree in Statistics from XYZ University.

    • I have 3 years of experience working as a data analyst at ABC Company.

    • Proficient in using tools like Excel, SQL, and Tableau for data analysis.

    • I have experience in creating reports and dashboards to present data insights to stakeholders.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - study dsa

I was interviewed in Sep 2017.

Interview Questionnaire 

2 Questions

  • Q1. Find the sum of two numbers without using any mathematical operarors.
  • Ans. 

    Use bitwise operations to find the sum of two numbers without using mathematical operators.

    • Use bitwise XOR to find the sum of two numbers without carrying.

    • Use bitwise AND and left shift to find the carry.

    • Repeat the process until there is no carry left.

  • Answered by AI
  • Q2. Delete a node from linked list when we are given a reference to the node. But the head pointer is not given.
  • Ans. 

    To delete a node from a linked list when only given a reference to the node, we can copy the data of the next node to the given node and delete the next node.

    • Copy the data of the next node to the given node

    • Update the next pointer of the given node to skip the next node

    • Delete the next node

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Tips: Strong understanding and thorough knowledge of C programming.

College Name: IIT Madras

Skills evaluated in this interview

I was interviewed in Nov 2016.

Interview Questionnaire 

8 Questions

  • Q1. A random number will be given as input to system,write a program to detect its data type(int or float ) without using size of function
  • Q2. General hr questions
  • Q3. Once again general hr interview questions
  • Q4. 1.given a large rectangle
  • Ans. 

    Need more context. What needs to be done with the large rectangle?

    • What are the dimensions of the rectangle?

    • Is it a 2D or 3D object?

    • What is the context of the problem?

    • Are there any constraints or limitations?

    • What tools or programming languages can be used?

  • Answered by AI
  • Q5. You will be given dimensions of a bigger rectangle and smaller rectangle,derive a formula to get how many smaller rectangles fit into the bigger rectangle
  • Ans. 

    Derive a formula to determine how many smaller rectangles fit into a bigger rectangle given their dimensions.

    • Calculate the number of times the smaller rectangle can fit into the bigger rectangle horizontally and vertically

    • Divide the width of the bigger rectangle by the width of the smaller rectangle to get the horizontal count

    • Divide the height of the bigger rectangle by the height of the smaller rectangle to get the ve...

  • Answered by AI
  • Q6. How many points are required to draw a rectangle
  • Ans. 

    At least 4 points are required to draw a rectangle.

    • A rectangle has 4 sides and 4 corners, so at least 4 points are needed to define those corners.

    • The points must be arranged in a specific order to form a closed shape with 4 sides.

    • Additional points can be used to add details or modify the shape of the rectangle.

    • The number of points required may vary depending on the software or tool used to draw the rectangle.

  • Answered by AI
  • Q7. What will be the new coordinates of a rectangle points if rectangle length and breadth is scaled and write a program to calculate the coordinates of corner points of scaled rectangle
  • Ans. 

    Answering how to calculate new coordinates of a scaled rectangle and providing a program for it.

    • To calculate new coordinates, multiply the original coordinates by the scaling factor

    • Scaling factor can be calculated by dividing the new length/breadth by the original length/breadth

    • Program can take input of original coordinates, scaling factor, and output new coordinates

    • Example: Original coordinates: (0,0), (0,5), (5,5), (...

  • Answered by AI
  • Q8. Lastly a puzzle: i dont remember the question

Interview Preparation Tips

Round: Test
Experience: The test had three sections:
1.aptitude:It was like any other aptitude test,all it takes is a bit of practice to crack all the questions
2.C programming:Basics of c were asked,outputs of some programs,u have to be thorough with concepts of c
3.Electronics:The company hired for both profiles: 1. PDK:software
and 2.Logic library:hardware,so this electronics section was also there,questions are mostly Network analysis,cmos logic,digital logic,vlsi etc
u should have good basics to get the electronics questions of course they are not very hard,but not too easy


Tips: practice aptitude,basics of c programming and also basics of electronics
Duration: 1 hour 30 minutes
Total Questions: 60

Round: Test
Experience: after 1st round i was shortlisted to this technical round,i was asked this question, i suggested that i will convert that number into a string and check whether string has a dot or not to check if it is float or int,the interviewer was not very impressed but was ok and asked few small questions and promoted me to next round

Tips: If u crack test with top marks,the technical rounds will be very easy,because the interviewers do not ask tough questions for people who cracked written test with high marks

Round: Technical Interview
Experience: tell me about yourself,strengths,weakness,three principles u follow in life,etc
Tips: This round depends on you,dont try to bluff something,they will know if u are bluffing,take a breath and speak up ur mind,be confident u can do it

Round: HR Interview
Experience: same questions,but this time less duration,not involving lengthy discussions, i think this round was just for double check

Round: HR Interview
Experience: After the hr round,only seven were shortlist,this interview round was very much easy and they checked my approach to the given problem,they were checking how well i am thinking adding complexities to the given problem
Tips: they did not check my programming ability,but just problem solving skills,so be good at aptitude,by practicing as much as you can

Round: Group Discussion
Experience: after technical interview,4 were shortlisted,so they went for gd round,it was general topic,which checks your general knowledge
Tips: Dont be nervous,just speak what ever you know,never mind language issues
Duration: 20 minutes

Skills: for pdk profile :programming
College Name: NIT Warangal

I applied via Campus Placement

Interview Questionnaire 

16 Questions

  • Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be us...
  • Q2. Given an array A[n], write a C program to find P and Q (P>Q) such that A[P] - A[Q] is maximum
  • Q3. A pyramid is given many blank spaces. Condition is that number in a cell equals sum of numbers in bottom two cells. Fill the blanks
  • Ans. 

    The question asks to fill the blanks in a pyramid where each number is the sum of the numbers in the bottom two cells.

    • Start from the bottom row and work your way up, calculating the sum of the numbers in the bottom two cells for each blank space.

    • Use a loop to iterate through each row and column of the pyramid.

    • Store the calculated sum in the corresponding blank space.

    • Repeat the process until all the blanks are filled.

  • Answered by AI
  • Q4. What are the basic functions of OS?
  • Q5. What is scheduling? List different types of scheduling
  • Q6. What is a deadlock? How to know if a deadlock is present?
  • Q7. What is Moore's Law?
  • Ans. 

    Moore's Law is the observation that the number of transistors in a dense integrated circuit doubles about every two years.

    • Named after Intel co-founder Gordon Moore

    • First stated in 1965

    • Has been a driving force behind technological advancements

    • Predicts exponential growth in computing power

    • Has been challenged in recent years due to physical limitations

  • Answered by AI
  • Q8. Differentiate between a process and a thread
  • Ans. 

    A process is an instance of a program while a thread is a subset of a process.

    • A process has its own memory space while threads share memory space

    • Processes are heavyweight while threads are lightweight

    • Processes communicate through inter-process communication while threads communicate through shared memory

    • Examples of processes include web browsers, text editors, etc. while examples of threads include GUI updates, backgro

  • Answered by AI
  • Q9. What are the advantages of having multi-core processor?
  • Ans. 

    Multi-core processors provide faster and more efficient computing.

    • Improved performance and speed

    • Ability to handle multiple tasks simultaneously

    • Reduced power consumption

    • Better multitasking capabilities

    • Enhanced user experience

    • Examples: Intel Core i7, AMD Ryzen 9

  • Answered by AI
  • Q10. Tell me about yourself and your family briefly
  • Ans. 

    I am a software engineer with a loving family.

    • I have been working as a software engineer for 5 years.

    • My wife is a teacher and we have two children.

    • We enjoy spending time together outdoors and traveling.

    • My parents live in a different state but we keep in touch regularly.

    • Family is very important to me and I prioritize spending time with them.

  • Answered by AI
  • Q11. Tell me about your course projects
  • Ans. 

    Developed a web-based project management tool and a mobile app for tracking expenses

    • Created a responsive UI using React and Bootstrap

    • Implemented user authentication and authorization using Firebase

    • Integrated Google Maps API for location tracking in the mobile app

    • Used Node.js and MongoDB for backend development

    • Collaborated with a team of four to complete the projects

  • Answered by AI
  • Q12. Tell me about your professional experience
  • Ans. 

    I have 5 years of experience in software engineering with expertise in Java and Python.

    • Developed and maintained web applications using Java and Spring framework

    • Designed and implemented RESTful APIs using Python and Flask

    • Worked on database management and optimization using MySQL and MongoDB

    • Collaborated with cross-functional teams to deliver high-quality software products

    • Participated in code reviews and provided construc

  • Answered by AI
  • Q13. What are your academic interests?
  • Ans. 

    My academic interests include computer science, artificial intelligence, and machine learning.

    • Computer science

    • Artificial intelligence

    • Machine learning

  • Answered by AI
  • Q14. Explain one CS topic(of your choice) in layman terms
  • Ans. 

    Explain Big O notation

    • Big O notation is used to describe the time complexity of an algorithm

    • It helps us understand how the algorithm's performance changes with input size

    • O(1) means constant time, O(n) means linear time, O(n^2) means quadratic time

    • We want algorithms with lower Big O values for better performance

  • Answered by AI
  • Q15. What are your location preferences?
  • Ans. 

    I am open to relocation based on the job opportunity and growth prospects.

    • Open to relocation for the right opportunity

    • Willing to move for career growth

    • Flexible with location based on job requirements

  • Answered by AI
  • Q16. Would you like to have a pizza slice? ;)
  • Ans. 

    Yes, I would love to have a pizza slice!

    • I am a big fan of pizza and would never say no to a slice!

    • Pizza is the perfect food for any occasion, whether it's a quick lunch or a late-night snack.

    • I particularly enjoy pepperoni and mushroom pizza, but I'm open to trying new toppings as well.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Questions were of average difficulty but lengthy. The test was conducted between 7:30 PM and 9 PM. I had a long day so it was a little tiresome.
Tips: Time is of importance. I suggest you to quickly browse through all the questions and pick the easy ones beforehand instead of being stuck on a single difficult question.
Duration: 90 minutes
Total Questions: 60

Round: Technical Interview
Experience: I found the questions easy so I was able to answer them all.
Tips: Don't just think in your mind. Think out loud so that the interviewer can correct you.

Round: HR Interview
Experience: Interviewer was friendly. It was like talking with a friend.
Tips: Keep it short and brief. It's fine even if your English is not good. (Mine wasn't )

General Tips: Be cool and calm. If you don't know something, admit it. You can come back to it later.
Skill Tips: No need to go very deep. Just know the basics properly.
Skills: Puzzle Solving Capability, Computer Organisation, Operating System Basics, Object Oriented Programming (OOP) Basics, C Programming, Aptitude
Duration: 2
College Name: IIT Madras
Motivation: Qualcomm is an industry leader in mobile hardware. The work profile suited me well.
Funny Moments: The nice HR lady offered me a pizza slice.

Skills evaluated in this interview

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Lam Research Interview FAQs

How many rounds are there in Lam Research Data Scientist interview?
Lam Research interview process usually has 1 rounds. The most common rounds in the Lam Research interview process are Technical.
How to prepare for Lam Research Data Scientist interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Lam Research. The most common topics and skills that interviewers at Lam Research expect are Big Data, Computer science, DBMS, Data Analysis and Data Science.

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Lam Research Data Scientist Interview Process

based on 1 interview

Interview experience

3
  
Average
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Lam Research Data Scientist Salary
based on 5 salaries
₹10 L/yr - ₹17.6 L/yr
At par with the average Data Scientist Salary in India
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Lam Research Data Scientist Reviews and Ratings

based on 3 reviews

3.3/5

Rating in categories

3.2

Skill development

3.9

Work-life balance

3.5

Salary

4.1

Job security

4.1

Company culture

3.0

Promotions

3.2

Work satisfaction

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