Function warmupCosineSchedule

warmupCosineSchedule(
    peakLr: number,
    warmupIters: number,
    totalIters: number,
): (step: number) => number
Linear warmup → cosine decay schedule (to 10% of peak), used by DPO. Returns lr for a 1-based step. Port of dpo.py lr_schedule.
Parameters
- peakLr: number
- warmupIters: number
- totalIters: number
Returns (step: number) => number
- Defined in packages/training/src/optimizer.ts:168