# Figure request F1
toolkit: superfig
language: cjk
claim: 一次前向是 x → f_θ → ŷ；损失不在主路上。
grammar: pipeline
work_rel_dir: figures/F1

## Roles
- {role: input,  color: sfTeal}
- {role: model,  color: sfOrange}
- {role: loss,   color: sfCoral}
- {role: output, color: sfViolet}

## Flow (cursor). \sfconn 没有 endpoints。
stage: {name: SA, text: "推理流程：一次前向"}
row: {name: R1, height: 16mm}
in_row:
  - {macro: sfnode, name: x, role: input,  label: "输入 $x$", w: 16mm, h: 12mm}
  - {macro: sfconn, name: e1, label: 预处理}
  - {macro: sfnode, name: f, role: model,  label: "模型 $f_\\theta$", w: 18mm, h: 12mm}
  - {macro: sfconn, name: e2, label: logits}
  - {macro: sfnode, name: y, role: output, label: "预测 $\\hat y$", w: 16mm, h: 12mm}

## Fixed topology
- {macro: sfnode, name: s, role: loss, label: "损失 $L$", w: 14mm, h: 12mm,
   at: "($(y.south)+(0,-22mm)$)"}
- {macro: sfarrowlabel, from: "y.south", to: "s.north", label: "$L(\\hat y, y)$"}