Core Variable · BCI Lexicon
Time Structure
TS
Time Structure (TS) measures an asset's resistance to value decay over time — whether a premium compounds or dissipates.
Mathematical Nature
The exponent n in the master formula, range [0.5, 2.0]. Public since the framework's initial publication and unchanged since. TS's own residual-value decay-curve fit uses a separate internal parameter, κ (kappa) — not the same quantity as the public n, and never used externally.
Primary Proxy (DRG-B+)
TS = (Residual Value ÷ Reference Price) × (1 − Depreciation Rate)κ
The specific proxy varies deliberately by category: secondary-market residual value for durable goods, icon-versus-seasonal resale premium for leather goods, core-SKU longevity for beauty.
Working n-Regime Classification
| Regime | State |
|---|---|
n = 1.0 | Linear baseline — no excess compounding |
n ∈ (1.1, 1.5] | Compounding / nourishing |
n ∈ [0.5, 0.9) | Dissipating |
Current working assumption; the rule for a specific value within a regime is not yet defined — see BSIP v4.0 §9.2.
Definitional Authority — This term is defined canonically in BSIP v4.0 and the White Paper v4.0. This page restates that definition on its own address for reference; it is not an independent source and does not diverge from it.
Rating Limitation — Nothing on this page constitutes a credit rating, valuation opinion, or investment instruction of any kind.