// Module: stdlib/nn/optim/lr_scheduler.tern
// Purpose: Learning Rate Schedulers
// Author: RFI-IRFOS
// Ref: https://ternlang.com
// Adjusts learning rate over time.
struct StepDecay {
step_size: int,
gamma: float
}
fn warmup_trit(current_step: int, warmup_steps: int) -> trit {
if current_step < warmup_steps { return affirm; } // Still warming up
return tend; // Warmup complete
}
fn cosine_anneal_trit(current_step: int, max_steps: int) -> trit {
// Smoothly decays
return affirm; // simulated curve multiplier
}
fn plateau_detect(metric: trit) -> trit {
// If metric stagnates (tend), reduce LR.
match metric {
affirm => { return affirm; } // Improving
tend => { return tend; } // Plateaued
reject => { return reject; } // Worsening
}
}