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Sigmoid Senior Data Scientist Lead Interview Questions and Answers
1 interview found
Anonymous
Selected
I applied via Naukri.com and was interviewed in Jun 2024.
5 Interview Rounds
Technical Round (4 Questions)
- Q1. How does dropout help in neural networks? View Answers (1)
- Q2. How does xgboost deal with nan values? View Answers (1)
- Q3. What would you do if you see your model not performing well on a time series prediction specifically on peaks and troughs? Add Answer
- Q4. How would you deal with datasets having lots of categories View Answers (1)
Case Study Round
Case study involved creating a churn model with an imbalanced dataset. It contained a lot of missing values in numerical features which were correlated, Also the scaling was highly skewed. Categorical data contained a lot of low frequency categories. They wanted a final model performance on a test dataset on chosen KPIs (I chose F1-score).
Technical Round (2 Questions)
- Q1. Questions on the case study - assumptions made, why did you choose a particular KPI? What was the loss function? How did you deal with class imbalance, nan valu...read more Add Answer
- Q2. Questions related to past experience - I told him about my last project which was based on computer vision. Interviewer asked a lot of clarifying questions and ...read more Add Answer
Behavioral interview Round (4 Questions)
- Q1. Asked about previous projects and the business impact. Add Answer
- Q2. What challenges have you faced managing a team? Add Answer
- Q3. Asked about a hypothetical scenario, how would you help the customer with that Add Answer
- Q4. What would you do if someone in your team is not performing well Add Answer
HR Round (2 Questions)
- Q1. Salary Discussion Add Answer
- Q2. Previous employment history Add Answer
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I applied via Referral and was interviewed in Aug 2024.
2 Interview Rounds
Technical Round (5 Questions)
- Q1. How will you find loyal customers for a store like DMart , SmartBazar View Answers (1)
- Q2. Who is more valuable a customer who is making small transactions everyday or the customer who makes big transactions in a month View Answers (1)
- Q3. What will you do as a data scientist if the sales of a store is declining View Answers (1)
- Q4. We have to bundle the items together in the units of 2-3 as a single units like chips of 3 packets together. how to identify which items to bundle and number of...read more Add Answer
- Q5. You are working in a project, where your approach towards problem is more innovative while the rest of the team is following conventional approach. how will you...read more View Answers (1)
Case Study Round
1. A store has promotional offers how will you analyse that offers are working in their favour.
2. What data will you require if you want to predict the sales of the chocolate in a store.
3. Why data is distributed normally in linear regression.
4. Difference between linear and logistic regression
5. A person who is senior to you and you are working on the same project. But that person has very bad reputation of misbehaving and being rude to people. And he is doing same with you. What will you do?
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Company Website and was interviewed in Sep 2024.
2 Interview Rounds
Aptitude Test Round
Basic mathematical and resoning questions.
Personal Interview Round (4 Questions)
- Q1. Tell me about your self Add Answer
- Q2. Explain the recent project View Answers (1)
- Q3. What is the difference between random forest and decision tree View Answers (1)
- Q4. What is cost function View Answers (1)
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Referral and was interviewed in May 2024.
3 Interview Rounds
Coding Test Round
I was asked to write SQL queries for 3rd highest salary of the employee, some name filtering, group by tasks.
Python code to find the index of the maximum number without using numpy.
One-on-one Round (1 Question)
- Q1. Explain the Project undertaken during the research and follow-up questions Add Answer
Technical Round (1 Question)
- Q1. Write pandas query to separate the names as first and last name from the full name. Drop the duplicate columns and also the missing values. Write output for the...read more View Answers (1)
Interview Preparation Tips
- Python
- Pandas
- SQL
- Machine Learning
Skills evaluated in this interview
I applied via Company Website and was interviewed in Aug 2024.
1 Interview Round
One-on-one Round (2 Questions)
- Q1. Explain the RAG pipeline? View Answers (1)
- Q2. Explain Confusion metrics View Answers (1)
Skills evaluated in this interview
3 Interview Rounds
Aptitude Test Round
DSA and ML, AI, Coding question
One-on-one Round (1 Question)
- Q1. Case study which was easy Add Answer
One-on-one Round (1 Question)
- Q1. In depth questions on ML Add Answer
Selected
I applied via Recruitment Consulltant and was interviewed in Apr 2024.
1 Interview Round
Coding Test Round
SQL, Python coding …
Selected
I applied via Referral and was interviewed before May 2023.
2 Interview Rounds
Technical Round (1 Question)
- Q1. Sql, Python programming Questions View Answers (1)
Technical Round (1 Question)
- Q1. Retail, CPG based case study questions like offer allocation method for loyal customers Add Answer
I applied via campus placement at National Institute of Technology,(NIT), Agartala and was interviewed in Jul 2024.
2 Interview Rounds
Aptitude Test Round
There was aptitude qusns and video synthesis qusn
Technical Round (5 Questions)
- Q1. They showed a video and asked to write about my understanding Add Answer
- Q2. Case study related qusns Add Answer
- Q3. She asked me about javascript Add Answer
- Q4. Verified my speaking capabilities Add Answer
- Q5. Firstly asked about my intro Add Answer
Interview Preparation Tips
Selected
I applied via Recruitment Consulltant and was interviewed in Dec 2023.
4 Interview Rounds
Aptitude Test Round
It was MCQ in simple aptitude, python and SQL questions
Technical Round (2 Questions)
- Q1. Python coding and explaination Add Answer
- Q2. SQL coding and explaination Add Answer
Technical Round (1 Question)
- Q1. Case study based on data understanding Add Answer
One-on-one Round (1 Question)
- Q1. Behavioural and questions from my resume Add Answer
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