Reading lesson with structured written material and clear navigation inside the course flow.
Access
Upgrade to Learner to open the full Academy library, certificates, and comparison tables.
Lesson preview
Data Cleaning and Preprocessing Raw market data from exchanges is rarely perfect. Before using it for strategies or ML, you need to clean and preprocess it. Common Data Issues Missing candles — gaps in data when exchange was down Duplicates — pagination overlap may cause duplicate entries Timezone inconsistencies —...