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AI Engineering Insider · Jul 31, 2026

Cracking AI & ML Evaluation System Design Interviews

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AI Engineering Insider · AI Engineering Insider

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What is AI Evaluation: Learn how to measure the quality of an AI system.
Metrics vs Objectives: See how business goals differ from evaluation metrics.
Reliability & Validity: Make sure your evaluation results are consistent and meaningful.
Statistical Testing: Determine whether improvements are statistically significant.
Experimental Design: Learn how to set up reliable evaluation experiments.
Golden Datasets: Create strong benchmark datasets for testing.

Accuracy: Measure overall prediction correctness.
Precision: Measure how many positive predictions are correct.
Recall: Measure how many actual positives are found.
F1 Score: Equilibrate precision and recall.
ROC-AUC: Evaluate model discrimination across thresholds.
PR-AUC: Evaluate performance on imbalanced datasets.

MAE: Find the average amount the model’s predictions are off.
RMSE: Give more weight to bigger prediction mistakes.
R² Score: Measure how well the model explains variance.

Recall@K: Check how many important items are found in the top K results.
Precision@K: Measure how accurate the top K-ranked items are.
MRR: Check where the first correct answer appears in the list.
MAP: Measure how good the overall ranking is.
NDCG: Check ranked results by how relevant each item is.

Error Analysis: Find frequent mistakes the model makes.
Slice Evaluation: Check how the model performs on different parts of the data.
Robustness Testing: Check if the model stays reliable with messy or tricky inputs.

Human Evaluation: Have people rate the model’s answers.
LLM-as-a-Judge: Use a language model to automatically check answers.
Pairwise Comparison: Look at two model answers side by side to compare.
Rubric Engineering: Create clear and consistent rules for evaluation.
Hallucination Detection: Identify unsupported or fabricated information.
Faithfulness: Check that answers agree with the given information.
Groundedness: Make sure answers are backed by facts.
Instruction Following: Check how well the model follows user directions.
Structured Output Validation: Check whether outputs follow defined formats, such as JSON or XML.
Benchmark Evaluation: Test models using common standard tests.

Retrieval Quality: Measure the relevance of retrieved documents.
Chunk Quality: Evaluate document chunking strategies.
Embedding Quality: Assess the quality of the semantic representation.
Reranker Evaluation: Measure improvements from reranking.
Context Precision: Measure the relevance of the retrieved context.
Context Recall: Measure completeness of retrieved context.
Citation Accuracy: Verify generated citations are correct.
Hallucination Analysis: Detect unsupported generated content.
RAGAS: Learn automated metrics for RAG systems.
DeepEval: Build automated evaluation pipelines.
TruLens: Monitor and evaluate production RAG applications.

Task Success: Measure whether agents complete assigned tasks.
Planning Quality: Evaluate reasoning and planning ability.
Tool Use: Assess effective use of external tools.
Memory Evaluation: Measure long-term memory performance.
Multi-turn Evaluation: Evaluate conversations across multiple interactions.
Function Calling: Validate API and tool execution accuracy.
Multi-agent Evaluation: Measure collaboration between agents.
Agent Benchmarks: Evaluate using SWE-bench, WebArena, and GAIA.

Toxicity: Detect harmful or offensive outputs.
Bias: Measure fairness across users and groups.
Prompt Injection: Test resistance to prompt manipulation.
Jailbreak Testing: Evaluate security against adversarial prompts.
Red Teaming: Discover vulnerabilities through systematic attacks.
Privacy Evaluation: Detect sensitive information leakage.
Governance Standards: Apply frameworks like NIST AI RMF and OWASP LLM Top 10.

OpenAI Evals: Build benchmark-driven evaluation suites.
DeepEval: Automate testing for LLM applications.
Promptfoo: Compare prompts and model outputs.
LangSmith: Trace, debug, and evaluate LLM workflows.
Arize Phoenix: Monitor production AI performance.
MLflow Evaluation: Track evaluation experiments and metrics.
Hugging Face Evaluate: Compute standard evaluation metrics.
lm-evaluation-harness: Benchmark foundation models consistently.

Offline Evaluation: Test models before deployment.
Online Evaluation: Measure live production performance.
A/B Testing: Compare multiple model versions.
Shadow Deployment: Test new models without impacting users.
Drift Detection: Detect changes in data or model behavior.
Latency & Cost: Optimize response speed and inference cost.
Monitoring & Alerting: Continuously track production quality.

Evaluation Pipelines: Automate end-to-end evaluation workflows.
Dataset Versioning: Track changes to benchmark datasets.
Experiment Tracking: Record evaluation runs and results.
Batch Evaluation: Evaluate large datasets quickly.
Distributed Evaluation: Scale assessments across multiple machines.
Dashboards: Visualize evaluation measures and trends.
Leaderboards: Compare models applying standardized benchmarks.

ML Evaluation Library: Implement common ML evaluation measures.
LLM Judge System: Build an automated LLM evaluator.
RAG Evaluation Pipeline: Evaluate retrieval and generation together.
AI Agent Evaluator: Measure end-to-end agent performance.
Safety Benchmark Suite: Build security and alignment tests.
Continuous Assessment CI/CD: Automate evaluation during deployment.
Production Evaluation Dashboard: Monitor AI quality in real time.

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