Exposure Domain Evidence Base
The exposure mapping rules draw on the following domain-specific research and regulatory data. These sources ground the thresholds and cost relationships used in the algorithmic exposure weights.
Fuel & Transport
- Australian Competition & Consumer Commission (2023). Report on the Australian petroleum market: December quarter 2023. ACCC. [Diesel share of road freight costs: 30–40%. Wholesale–retail margin analysis. Regional price differentials.]
- Bureau of Infrastructure and Transport Research Economics (2022). Road freight estimates and forecasts. BITRE. [Freight cost structure: fuel as proportion of operating costs. Distance-based cost modelling for regional supply chains.]
- Australian Competition & Consumer Commission (2024). Inquiry into the National Anti-Profiteering Mechanism: Interim Report. [Ampol, Viva, BP, Mobil pricing conduct. Vertical integration in Australian fuel supply.]
- International Energy Agency (2023). Australia 2023: Energy Policy Review. IEA. [90-day stockholding obligation. Import dependency ~90%. MSO structure and reporting methodology.]
Food & Agriculture
- Australian Bureau of Agricultural and Resource Economics and Sciences (2024). Agricultural Commodities: March quarter 2024. ABARES. [Farm input cost transmission. Fertiliser import dependency. Freight share of retail food cost: 8–12% average, ~15% for fresh produce, ~6% for shelf-stable.]
- Australian Bureau of Statistics (2024). Consumer Price Index: Concepts, Sources and Methods. ABS Cat. No. 6461.0. [Food sub-group CPI methodology. Quarterly measurement. Seasonal adjustment.]
Electricity & Grid
- Australian Energy Market Operator (2024). Quarterly Energy Dynamics Q4 2024. AEMO. [NEM dispatch pricing. Gas-peaker marginal price setting. Renewable generation negative pricing.]
Economic & Housing
- Reserve Bank of Australia (2023). The Transmission of Monetary Policy. RBA Bulletin. [Cash rate to mortgage rate transmission lag: 4–6 weeks. Compound stress on households with existing housing pressure.]
- Australian Bureau of Statistics (2023). Socio-Economic Indexes for Areas (SEIFA) 2021. ABS Cat. No. 2033.0.55.001. [IRSD methodology. Postcode-level socioeconomic classification.]
Emergency Services
- NSW Rural Fire Service (2024). NSW RFS Major Incidents GeoJSON Feed. [Incident classification: Emergency Warning, Watch and Act, Advice. Live feed, ~30 minute refresh.]
- Emergency Management Victoria (2024). OSOM Public GeoJSON Feed. [Incident severity weighting. Active status classification. Live feed, ~5 minute refresh.]
Diversity & Concentration
- Shannon, C.E. (1948). A mathematical theory of communication. The Bell System Technical Journal, 27(3), 379–423. [Shannon diversity index: original formulation applied here to industry employment and transport mode diversity.]