How to design a fraud-detection system?
Machine Operation Interview Questions
2,161 machine operation interview questions shared by candidates
1. Call with the Recruiter: The questions were general and non-technical, such as "Tell me about yourself and your experience" and "Why are you interested in Ninety?" Typical questions that you'd expect from a non-technical recruiter. 2. Technical Interview: First part: I was asked to explain a sentiment analysis implementation, walking through the code line by line while thinking out loud. This included discussing how the code works, identifying the hyper-parameters, and suggesting ways to tune and improve performance. Second part: This focused on a broad range of machine learning and data science topics. Some key questions included: Explain Naive Bayes and Bayes' Theorem. How does it work? What is the Transformer architecture? Can you explain each component in detail? How is feature engineering done in Computer Vision tasks? What is the ResNet architecture, and how does it work? The interview covered both breadth and depth across ML/DL topics. Some LLM questions, involving RAG, etc. The other two interview: project that you're proud of? the challenges you face doing a project and how did you resolve it? followed by many more questions about the current project that they had and the challenges and asked me how would I approach them and my resolutions? ...
Why do you want to leave your current job?
SQL: joins, window functions python: new column assignment, string and list manipulations How does XGBoost work? step by step process with example How to represent categorical column with high cardinality How can embeddings be generated? How encoder-decoder might help in this How to find presence of multicollinearity in data? What is chi square test of independence? How to handle imbalanced classification? Why is PR auc better suited to such cases then ROC auc? How to handle large no. of classes in multiclass classification? What is negative sampling and how does it help in such scenarios?
How would you do if I ask you to recurit one team of engineers?
What's you strength and weakness, cliche like that.
given dictionary and asked convert it into dataframe and build linear regression using dF
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Coding/Problem Solving: The vending machine and coin change
Basic ML concepts and system designs
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