Price Indices & Trade Anomalies

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Abstractions about price-level measurement, index construction, hedonic adjustment, capacity-constrained competition, and persistent bias in international trade.

5 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Bertrand–Edgeworth model — Model homogeneous-product price competition among capacity-constrained sellers under an explicit rationing rule, so residual demand can prevent the pure marginal-cost equilibrium of unconstrained Bertrand competition.
• Hedonic regression — Regress the price or rent of a differentiated good on its characteristics to estimate an implicit price surface and, with additional assumptions, demand or welfare effects.
• Home bias in trade puzzle — The empirical finding that otherwise comparable regions trade far more within national borders than across them, leaving a large border effect after distance, size and standard gravity-model determinants are controlled.
• Index (Economics) — A normalized statistic comparing the level or change of a specified economic aggregate across periods, places, or populations relative to a declared base using explicit items, weights, and an aggregation formula.
• Price Level — A normalized aggregate of prices for a defined economic domain and period whose ratios track the common monetary-price component used to measure inflation, purchasing-power change, and real-versus-nominal magnitudes.