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Updated weekly · Last refresh Aug 30

Basis Research Institute Research Engineer Interview Questions

The questions to prepare for a Basis Research Institute Research Engineer interview. Questions from real interview reports rank first. Updated weekly.

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~3htotal time
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1
CodingStart here. 3 questions · ~27 min
Basic Linear Regression FunctionEasy
Practice

Implement ordinary least squares to fit a line and predict values for new inputs.

RegressionMathArraysBasis Research Institute
Maintainable and Scalable CodeMedium

Tests engineering practices that support long-term evolution, readability, and performance.

code qualityDynamic ProgrammingAlgorithmsBasis Research Institute
Simple Classification AlgorithmMedium

Tests coding ability to implement a basic classification approach and handle inputs/outputs correctly.

ArraysSortingGreedyBasis Research Institute
2
Machine Learning8 questions · ~72 min
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationBasis Research Institute
Supervised vs Unsupervised LearningEasy
Recently asked

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffBasis Research Institute
Handling Missing Data in MLMedium

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningBasis Research Institute
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3
Behavioral & Leadership7 questions · ~63 min
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4
More topics2 questions · ~18 min
Choosing Classification Evaluation MetricsEasy

Explain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.

PrecisionAccuracyRecallBasis Research Institute
Designing Algorithm ExperimentsMedium

Tests experimental design, metrics selection, and validation strategy for research-grade ML evaluation.

Hypothesis TestingStatistical SignificanceA/B TestingBasis Research Institute
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