Sovereign Debt Sustainability Assessment
Japan's sovereign debt profile generates a SIGMA score of 58.7/100 in the ACCUMULATION regime — reflecting moderate fiscal pressures within manageable parameters.
The SIGMA Engine v5.0 derives this score from eight deterministic analytical layers: metabolic lifecycle entropy (β=0.856, biological age 623 months), structural fragility (Minsky phase: hedge), NLP narrative divergence (0.0%), network contagion (R₀=0.753, percolation intact), and predictive signals (CSD=20.0, Hawkes λ=0.1000).
Regime probability distribution as of 2026-06-10: stable 28.2% / accumulation 25.3% / critical 25.8% / collapse 20.7%. The Hurst exponent of 0.686 indicates strong trend persistence — risk trajectory statistically likely to deepen.
Based on Markov chain transition probability from current ACCUMULATION regime. Kairos arbitrage window: 31 days.
Methodology: SIGMA scores are deterministic (identical inputs = identical outputs). Data sources: Federal Reserve FRED, GDELT geopolitical entropy, GLEIF corporate ownership network, Stooq price data. Not financial advice — for informational and research purposes only. Verify predictions: /predictions.