864cf8690d
DQN: wire SAC-style entropy regularizer into TD loss, fix diversity penalty normalization from ln(3) to ln(45), add epsilon floor (0.05) for noisy nets, enable sigma scheduling (0.8→0.4 with 0.3 floor), add UCB count-based exploration bonus, expand hyperopt search space from 43D to 45D. PPO: replace fabricated entropy metric (value_loss×0.5) with real Shannon entropy from action distribution, fix EntropyRegularizer normalization from ln(3) to ln(45), implement Monte Carlo entropy estimate for flow policy (was returning zeros), fix hyperopt VRAM bound from 3 to 45 actions. Monitoring: add normalized action entropy and diversity Prometheus gauges, add exploration diagnostics logging per epoch. 2503 ml tests pass, 277 common tests pass, 0 clippy warnings. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
common
Shared types, error handling, and utilities for the Foxhunt HFT ecosystem.
Key Types
FoxhuntError— unified error enum withResultaliasModelType— canonical ML model enum (10 primary variants)CircuitBreakerTrait— async circuit breaker interfaceTlsProtocolVersion,ClientIdentity— TLS configuration types- Market data types (
Tick,OrderBook) and order types (LimitOrder,MarketOrder)
Modules
model_types— canonicalModelTypeenum re-exported by ml/ and model_loader/resilience—CircuitBreakerTraitasync traittls— TLS types and configurationquestdb— QuestDB client configuration
Usage
use common::{FoxhuntError, ModelType};