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AI and Machine Learning Background Questions

A synopsis of applied artificial intelligence and machine learning experience including models, frameworks, and pipelines used, datasets and scale, production deployment experience, evaluation metrics, and measurable business outcomes. Candidates should describe specific projects, roles played, research versus production distinctions, and technical choices and trade offs.

EasyTechnical
65 practiced
Given this confusion matrix for a churn classifier: TP=80, FP=20, FN=40, TN=860. Compute accuracy, precision, recall, and F1 score, and explain which of these metrics should be highlighted on a BI dashboard intended for retention product managers.
HardTechnical
120 practiced
Your company plans to automate dynamic pricing with ML. As the BI Analyst, define the pre-deployment experiments, required instrumentation and logging, KPIs and safety guardrails (profit, conversion, fairness), rollback criteria, and the dashboards executives will need during rollout.
MediumTechnical
85 practiced
Design an A/B experiment to measure the business impact of a new recommendation model rolled out to 20% of users. Explain randomization strategy, key product and business KPIs, sample size considerations, guardrails to prevent negative business outcomes, and how BI dashboards should report the experiment progress and results.
HardSystem Design
78 practiced
Architect an end-to-end ML platform that serves models and integrates outputs into organization-wide BI dashboards. Requirements: support 100 models, 1B predictions/day, multi-tenant access, model versioning, monitoring, explainability, role-based access, and two-year retention. Describe components, data flows, choices for model store and feature store, batch vs streaming, and how BI will consume metrics.
MediumTechnical
66 practiced
You observe that model predictions differ between staging and production for the same input records. List likely causes (serialization, feature preprocessing differences, environment variables, library versions), and propose a step-by-step reconciliation and automated unit tests to prevent regressions.

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