Feature Engineering
Feature engineering is the process of transforming raw data into input features that improve model performance, including encoding, scaling, and handling missing values. It is a core part of the MLA-C01 data-preparation domain.
All MLA-C01 Terms
Amazon SageMaker
Amazon SageMaker is AWS's managed platform for building, training, tuning, deploying, and monitoring machine-learning models.
Feature Engineering
Feature engineering is the process of transforming raw data into input features that improve model performance, including encoding, scaling, and handling missing values.
Feature Store
Amazon SageMaker Feature Store is a repository for storing, sharing, and serving curated ML features for training and inference consistently.
Hyperparameter Tuning
Hyperparameter tuning is the process of searching for the hyperparameter values that produce the best model performance, which SageMaker automates with automatic model tuning.
Model Training
Model training is the process of fitting an algorithm to prepared data to learn patterns, run in SageMaker as managed training jobs.
Overfitting
Overfitting is when a model learns the training data too closely, including noise, and generalizes poorly to new data.
Model Evaluation
Model evaluation is measuring how well a trained model performs using metrics appropriate to the task, such as accuracy, precision/recall, F1, AUC, or RMSE.
Model Registry
The Amazon SageMaker Model Registry is a catalog for versioning models, managing approval status, and promoting them to deployment.
Model Endpoint
A model endpoint is a deployed model that serves inference requests, which SageMaker offers as real-time, serverless, asynchronous, or batch options.
Batch Transform
Batch transform is a SageMaker inference option that runs predictions on a whole dataset at once rather than serving live requests.
SageMaker Pipelines
Amazon SageMaker Pipelines is a service for building and automating end-to-end ML workflows — data prep, training, evaluation, and deployment — as a CI/CD pipeline.
Model Monitor
Amazon SageMaker Model Monitor detects data quality issues, drift, and bias in deployed models by comparing live traffic against a baseline.
Data Drift
Data drift is a change in the statistical distribution of production input data compared to training data, which can degrade model accuracy over time.