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EMA
Syed Ibrahim Omer edited this page Apr 13, 2026
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EMA is a moving average that weights recent prices more heavily than older prices.
ema
EMA is commonly written recursively:
[ EMA_t = \alpha \cdot close_t + (1-\alpha)\cdot EMA_{t-1} ]
where ( \alpha ) is a smoothing factor derived from the configured span/window.
- Config key:
ema_window - Value: integer span, keyed by period + timeframe
- EMA reacts faster than SMA to recent changes.
- Early rows may be null or depend on initialization details.
Related pages:
- Getting Started
- CLI Reference
- Configuration & Templates
- Indicators (Overview)
- Output Formats
- Advanced Usage
- Troubleshooting
- Pipeline
- CLI Parsing
- Data Source (Yahoo Finance)
- Source Data Deep Dive
- Schema Normalization
- Data Shape Invariants
- Output Writing
- Write Output Deep Dive
- Config Resolution
- Polars Engine
- Source Modules
- Testing
- Performance
- Indicators Engine
- Reproducibility