Cert Notes/ Commute Study Notes
Roadmap
KOEN
CLF-C02 · FoundationalCloud Practitioner - Foundational
DVA-C02 · AssociateDeveloper - Associate
SAA-C03 · AssociateSolutions Architect - Associate
SOA-C02 · AssociateCloudOps Engineer - Associate
SAP-C02 · ProfessionalSolutions Architect - Professional
DOP-C02 · ProfessionalDevOps Engineer - Professional
SCS-C03 · SpecialtySecurity - Specialty
MLA-C01 · AssociateMachine Learning Engineer - Associate
  • Week 1
    • 1.ML Lifecycle and the Role of ML Engineers
    • 2.ML Problem Types and Evaluation Metrics Basics
    • 3.Day 3
    • 4.SageMaker Overview: Studio, Training/Inference, Built-in Algorithms
    • 5.Week 1 Comprehensive Review — ML Fundamentals & AWS Stack
  • Week 2
    • 1.Data Collection: S3 Data Lake, Kinesis, Batch Ingestion, Data Formats
    • 2.Data Catalog & ETL: AWS Glue and DataBrew
    • 3.Query & Exploration: Athena, Redshift, EDA Basics
    • 4.Data Storage Strategy: Partitioning, Format Optimization, Training Readiness
    • 5.Week 2 Comprehensive Review — Data Collection & Storage Recap
  • Week 3
    • 1.Feature Engineering: The Art of Transforming Data into Numbers Models Can Read
    • 2.SageMaker Data Wrangler: No-Code Data Preparation
    • 3.SageMaker Feature Store: Managing Features as Assets
    • 4.Data Bias·Quality: Clarify, Class Imbalance Handling, Data Split
    • 5.Week 3 Comprehensive Review — Feature Engineering·Data Quality
  • Week 4
    • 1.SageMaker Training Job: Estimator, Input Channels, Instances, Spot
    • 2.Built-in Algorithms: XGBoost, Linear Learner, Image·Text, Input Formats
    • 3.Hyperparameter Tuning (AMT): Bayesian·Random·Grid, Early Stopping, Warm Start
    • 4.JumpStart·Pre-trained Models·Transfer Learning + Training Cost Optimization
    • 5.Week 4 Comprehensive Review: Model Development 1 — SageMaker Training
  • Week 5
    • 1.Custom Training: Script Mode, BYOC, Framework Containers
    • 2.Distributed Training: Data Parallel and Model Parallel
    • 3.Debugging and Profiling: SageMaker Debugger and Profiler
    • 4.Model Evaluation: Metric Selection, Overfitting, Cross-validation, Confusion Matrix
    • 5.Week 5 Comprehensive: Model Development 2 Review
  • Week 6
    • 1.Inference Options Overview: 4 Deployment Modes and Selection Criteria
    • 2.Real-time Endpoints: Configuration, Auto-scaling, Instance Selection
    • 3.Cost & Advanced Inference: Multi-model, Multi-container, Inference Pipeline, Inferentia
    • 4.Batch & Serverless Inference Deep Dive: Throughput Tuning & Cost Tradeoffs
    • 5.Week 6 Synthesis: Inference Deployment Review
  • Week 7
    • 1.Declare parameters, injectible at execution
    • 2.Create package group bundling models of same purpose
    • 3.buildspec.yml — commands CodeBuild executes
    • 4.CloudFormation: SageMaker endpoint declared as code
    • 5.Synthesis code: pipeline end with condition passes → approval triggers deploy
  • Week 8
    • 1.SageMaker Model Monitor: Data Quality and Model Quality Drift
    • 2.Bias and Explainability Drift: Monitoring During Operations with Clarify
    • 3.Filter recent errors from log group
    • 4.Day 4
    • 5.Best practice: aggregating operational metrics + model monitor metrics on one dashboard
  • Week 9
    • 1.Day 1
    • 2.Day 2
    • 3.Data and Model Protection: KMS Encryption and Secrets
    • 4.Day 4
    • 5.Day 5
  • Week 10
    • 1.Day 1
    • 2.Day 2
    • 3.Day 3
    • 4.Day 4
    • 5.Day 5
AIF-C01 · FoundationalAI Practitioner - Foundational
DEA-C01 · AssociateData Engineer - Associate
MLS-C01 · SpecialtyMachine Learning - Specialty
← MLA-C01/Week 3/Day 5
MLA-C01· AssociateWeek 3 · Day 5~14 min read

Day 5 - Week 3 Comprehensive Review — Feature Engineering·Data Quality

This week covered the process of refining prepared data into a form that models can learn — feature engineering and data quality. It's the latter part of MLA-C01 Domain 1 and the stage that most significantly determines model performance. It's also the domain where ML's maxim "data over algorithm" shines most brightly.

Today we weave Data Wrangler·Feature Store·Clarify into a single flow and review them together. The three tools handle transformation·management·validation respectively, and when linked together, they form a pipeline "from raw data to a trustworthy training dataset".

Feature Engineering Pipeline at a Glance

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Week 1 is free for everyone. Week 2 onwards — plus mock exams and unlimited review — is included in the Pro plan.

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