EX#5 A* 運用

  Handouts

LLM 遭遇 多個限制條件的複雜問題 

專注力模型

Comparison of LLMs

Claude Opus 4.6 optimal (visualizing how AI thinks)

Gemini 3.0 Pro 推理，optimal

ChatGPT 5, end results 流程圖  feasible, not optimal，＊

Grok 4 ，end results 流程圖 ＊

Visualization

Decision Tree (share)

location-based time-evolving diagram (space-temporal transformation ), minimalist

animation on map (national & local) share

  課堂練習 

Deadline: This Saturday at 23:59

Send all the share links to  me chang212@gmail.com by email with subject EX#5 [your id, your name]

1,2 全做

3,4 任選1

1. Design a Two-Stage BJT Amplifier according to goals specified using A* (Parameters to optimize RE1, RC1. RE2. RC2) 

2. Optimize LM3886 class AB audio amplifier IC using A* (Parameters to optimize: resistors except the load) 

A Search Setup*

• State space: 5 components × 5 E12 values each = 3,125 possible states
• g(n): actual steps taken from the start configuration
• h(n): circuit performance cost (the heuristic) — sum of 5 weighted penalties
• f(n) = g + h: A* priority queue ordering

Cost function (5 components, all minimized):

• Gain: quadratic penalty for deviation from 26 dB (20×)
• f_low: penalty if low-frequency cutoff exceeds 10 Hz
• f_high: penalty if high-frequency cutoff falls below 100 kHz
• Bias: penalizes Rb1 ≠ Rb2 (asymmetric thermal tracking)
• Re stability: log-scale penalty away from 0.47 Ω optimum

Weight/ Forms

Are Re1 and Re2 Always Equal?

the architecture inside the LM3886 and TDA7293

optimizer A* (share)

3. 搶救感恩節晚餐大作戰講義 題目 使用ＡＩ推理或用程式計算出最佳計畫， 然後將求解過程視覺化

推理視覺化（動畫）

style 1

style 2

A* 搜尋樹狀圖（動畫）

style 1

style 2

4. 搶救感恩節晚餐大作戰講義 題目 使用ＡＩ推理或用程式計算出最佳計畫， 然後將得出結果視覺化

狀態圖(State Diagram) 

 (interactive timeline) artifact state diagram

 (interactive timeline) artifact map version

state diagram with aligned timeline

看板圖 (Kanban)

 (interactive timeline)

流程圖(Flow chart)

 (interactive timeline) artifact state diagram

timed flowchart with interactive timeline (share)