PhonePe Decision Scientist Interview Questions and Answers

Given Python coding challenge related to string processing and second question was matrix processing using python

Q1. Bagging boosting and its difference and uses.
Add your answer
Q2. Methods to minimize overfitting and underfitting
Add your answer
Q3. Transformer architecture
Add your answer
Q4. LLM usecase and explain how to work on it
Add your answer

Q1. Given data, find out what AI project can be discovered and how to progress on implementing it.
Add your answer
Q2. Given data and usecase, which model to use to implement solution and how detailed steps.
Add your answer

Q1. Discussed each project in my resume in detail and related questions
Add your answer
Q2. Discussed team and personal behavioural questions
Add your answer

Pyspark, Python and Machine learning questions

Q1. Moderate level questions
Add your answer
Q2. Moderate level questions from past work experience
Add your answer

Q1. Short cut keys of tools
Ans. 
Short cut keys are keyboard shortcuts that allow users to quickly perform actions in various tools.
• Ctrl + C: Copy

• Ctrl + V: Paste

• Ctrl + X: Cut

• Ctrl + Z: Undo

• Ctrl + S: Save

• Ctrl + P: Print
Answered by AI
Add your answer

Q1. Project explanation in brief manner
Ans. 
Developed a predictive model to forecast sales based on historical data
• Collected and cleaned historical sales data

• Performed exploratory data analysis to identify trends and patterns

• Built and trained machine learning model using regression techniques

• Evaluated model performance using metrics like RMSE and MAE
Answered by AI
Add your answer

Q1. Discussion on linear regression and regularisation techniques
Add your answer
Q2. Discussion on tree based models and measures to score the models
Add your answer

Q1. Projects Mentioned in Resume
Add your answer
Q2. Related to Python, Pyspark
Add your answer

We were trained for 2 weeks on web dev. and data science and were given individual 2 projects, according to the performance on them and a final interview, candidates were selected.

Q1. All about the assignment done
Add your answer
Q2. Your interest and particular domain you want to work in
Add your answer

3 DSA Que was asked on hackerrank

Q1. 3 DSA que asked by interviewer wirh code
Add your answer