Technical Analysis

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2 domain-specific abstractions whose origin domain is Technical Analysis.

• Negative volume index — Conditionally accumulate price or breadth changes only on sessions whose trading volume falls from the previous session, producing a path-dependent technical-analysis series whose interpretation requires a declared variant and test period.
• True strength index — A bounded momentum oscillator formed by double-smoothing price change and absolute price change and taking their ratio to indicate trend direction and relative momentum.