Plangrid Applied Scientist Interview Questions
The questions to prepare for a Plangrid Applied Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.
PlangridBuild a classifier for a highly imbalanced dataset and choose training and evaluation methods that surface rare positives.
PlangridCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
PlangridExplain what a confusion matrix shows and how to read it for precision and recall.
PlangridExplain how transformer self-attention works, including its role in sequence modeling and why it scales better than RNNs.
PlangridTests Python text preprocessing and feature extraction using TF-IDF.
PlangridAssesses statistical reasoning about model fit metrics and their proper use.
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Use joins, CTEs, and monthly aggregation to compute Google Maps active users and month-over-month growth.
Engine
Google
ZoomInfo TechnologiesCalculate each customer's cumulative transaction amount over time using a CTE and window function.
Banco Santander
Anz
Bank Of Tokyo-Mitsubishi UFJ