Data scientist
Senior
technical
You are analyzing a large dataset and need to optimize the performance of your Pandas operations. Describe key considerations you would keep in mind when working with large datasets, particularly regarding memory usage and computation efficiency.
To optimize performance, I would:
1. Use the appropriate data types (e.g., category data type for categorical variables) to reduce memory usage.
2. Leverage chunking for reading large CSV files and use libraries like Dask for out-of-core computation.
3. Filter data early in the pipeline to minimize the size of DataFrames before processing.
Trusted by 100+ professionals preparing for interviews
Trusted by 100+ professionals
50+ Company Question Banks
5+ Supported Languages
Practice More Questions Like This
Generate unlimited interview questions with structured answers, code runner, and AI-powered walkthroughs.
Get Started Free