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Recognition is not understanding. These quizzes ask you to calculate, diagnose bugs, order processes, and make design calls. Missed questions go into your review queue.

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Calculus for ML6 questions · Calculus for ML Information theory10 questions · Information theory Numerical stability9 questions · Numerical stability Probability and statistics6 questions · Probability and statistics The Python toolkit6 questions · The Python toolkit Vectors and matrices6 questions · Vectors and matrices Learning paradigms8 questions · Learning paradigms The language of ML6 questions · The language of ML Workflow, splits, and leakage6 questions · Workflow, splits, and leakage Overfitting and the bias-variance trade-off6 questions · Overfitting and the bias-variance trade-off Linear regression9 questions · Linear regression Regularization and regression metrics6 questions · Regularization and regression metrics Classification metrics and thresholds7 questions · Classification metrics and thresholds Logistic regression6 questions · Logistic regression K-nearest neighbors8 questions · K-nearest neighbors Naive Bayes6 questions · Naive Bayes Support vector machines6 questions · Support vector machines Decision trees6 questions · Decision trees Random forests and gradient boosting6 questions · Random forests and gradient boosting DBSCAN, hierarchical clustering, and Gaussian mixtures6 questions · DBSCAN, hierarchical clustering, and Gaussian mixtures K-means clustering8 questions · K-means clustering PCA, t-SNE, and UMAP6 questions · PCA, t-SNE, and UMAP Named entity recognition11 questions · Named entity recognition From text to vectors6 questions · From text to vectors Topic modeling10 questions · Topic modeling Word embeddings6 questions · Word embeddings Intro to PyTorch10 questions · Intro to PyTorch Loss functions9 questions · Loss functions The neural-network forward pass8 questions · The neural-network forward pass Backpropagation6 questions · Backpropagation Gradient descent8 questions · Gradient descent Debugging neural networks10 questions · Debugging neural networks Training and regularization6 questions · Training and regularization Autoencoders, diffusion, and transfer learning6 questions · Autoencoders, diffusion, and transfer learning Convolutional networks6 questions · Convolutional networks Flow matching and rectified flows10 questions · Flow matching and rectified flows GANs, generator versus discriminator10 questions · GANs, generator versus discriminator Latent diffusion and Stable Diffusion10 questions · Latent diffusion and Stable Diffusion Recurrent networks, LSTMs, and GRUs6 questions · Recurrent networks, LSTMs, and GRUs Attention variants9 questions · Attention variants BERT and masked language modeling9 questions · BERT and masked language modeling Self-attention8 questions · Self-attention The transformer architecture6 questions · The transformer architecture Adapting LLMs6 questions · Adapting LLMs Decoding6 questions · Decoding Fine-tuning in practice10 questions · Fine-tuning in practice Mixture of experts9 questions · Mixture of experts Open models: architecture walkthroughs9 questions · Open models: architecture walkthroughs Scaling laws9 questions · Scaling laws Tokenization and pretraining6 questions · Tokenization and pretraining The RAG pipeline6 questions · The RAG pipeline Vector search9 questions · Vector search Evaluating LLM systems6 questions · Evaluating LLM systems LLM inference10 questions · LLM inference Serving LLMs11 questions · Serving LLMs Agent memory10 questions · Agent memory Model Context Protocol10 questions · Model Context Protocol Multi-agent systems9 questions · Multi-agent systems Building reliable agents10 questions · Building reliable agents Tool use and agents10 questions · Tool use and agents Production architecture6 questions · Production architecture Reliability, cost, and observability6 questions · Reliability, cost, and observability Securing AI systems6 questions · Securing AI systems Differential privacy9 questions · Differential privacy Fairness9 questions · Fairness Experimentation and A/B testing10 questions · Experimentation and A/B testing ML system design10 questions · ML system design Model monitoring and drift10 questions · Model monitoring and drift The portfolio project ladder6 questions · The portfolio project ladder The 12-week plan6 questions · The 12-week plan Anomaly detection10 questions · Anomaly detection Feature engineering10 questions · Feature engineering Hyperparameter tuning10 questions · Hyperparameter tuning Imbalanced data11 questions · Imbalanced data Time series10 questions · Time series CLIP and contrastive image-text pretraining10 questions · CLIP and contrastive image-text pretraining Object detection and YOLO9 questions · Object detection and YOLO Self-supervised vision9 questions · Self-supervised vision Semantic segmentation and U-Net9 questions · Semantic segmentation and U-Net Vision-language models9 questions · Vision-language models Vision transformers9 questions · Vision transformers Deep Q-networks (DQN)10 questions · Deep Q-networks (DQN)MDPs, states, actions, and rewards9 questions · MDPs, states, actions, and rewards Policy gradients and REINFORCE9 questions · Policy gradients and REINFORCE Proximal policy optimization (PPO)9 questions · Proximal policy optimization (PPO)Q-learning and SARSA9 questions · Q-learning and SARSA Collective operations from scratch9 questions · Collective operations from scratch Gradient checkpointing9 questions · Gradient checkpointing Gradient clipping and mixed precision10 questions · Gradient clipping and mixed precision Scaling and distributed training10 questions · Scaling and distributed training ZeRO and FSDP10 questions · ZeRO and FSDP Context engineering9 questions · Context engineering Few-shot and chain-of-thought9 questions · Few-shot and chain-of-thought Prompt engineering9 questions · Prompt engineering Spectrograms and mel features9 questions · Spectrograms and mel features Speech recognition10 questions · Speech recognition: CTC, transducers, and attention