TTM Foundation — Pick the scheme, not only the knob
Ryuji YabeTTM Foundation. A first course for people who have never optimized a product. Better means higher...
Trilogy: Foundation / Application / Case lab
TTM Foundation. A first course for people who have never optimized a product.
Better means higher than the option we already use. Write eight boxes before you search. Empty boxes make fake winners. An orthogonal array is a compressor for expensive trials. If ten to thirty schemes can all be scored, skip the array. TTM is transfer: the mold became a scoring function.
Book 1 of 3. Next: ramen you can cook. Then a SUNO lab with the lyric.
First
- Better = higher than today's choice (the zero point).
- Eight boxes first. Empty reject is illegal. Empty noise can be legal.
- Hourglass teaches variation. Ramen and SUNO let a class run the logic this week.
- SN ratios stay a tool. They are not the faith.
Four questions
| Question | Answer |
|---|---|
| What is better? | Higher than today's choice |
| What do students do first? | Fill eight boxes. Then score every scheme. |
| Do we need an orthogonal array? | No, if ten to thirty schemes can all be scored |
| Where is the lab? | Ramen in Application. SUNO in the Case book. |
Foundation, then Application, then the Case lab.
You already optimize
Lunch under time and budget is already TTM. A playlist in a noisy car is already TTM. The zero point is the usual shop, or the last track. A new option wins only if it beats that zero under the same mess.
Eight boxes. Do not search empty.
Necessary function. Zero point. Control. Noise. Score. Reject. Pick. Check.
If the reject box is empty, illegal winners survive. If there is no zero, the ranking cannot say "better than now". Noise is two technical names, or the word empty. "Canada" is not noise. "The market" is not noise. Hunger that cannot be separated from the bowl is empty.
The zero point is today's choice
Do not set "do nothing" as F = 0 when the function is still required. Every scheme then starts as a penalty. The zero is the row we would pick if we did not optimize.
F = score of the scheme minus score of the zero. Only F > 0 beats the present.
Hourglass, then a compressor
A five-minute glass. Target 5.00. First shrink the spread under heat and shake. Then move the mean with sand. A wide distribution that happens to average 5.00 still loses money.
An L8 compresses 16 combinations into 8. Teach it so students feel compression. Twelve scored bowls do not need an L18.
Transfer, two kinds of problem, the gate
A steel mold copies size M into part X. A scoring function is the same mold. Inputs go in. A metric comes out.
Quantitative problems end in money. The gate opens. Qualitative problems end in points 0-5. The gate stays shut. Keep a sensitivity map.
Factors are adjustment, control, noise. Delete the signal column. Context (who holds AUX) is not noise.
Ninety minutes, then two labs
0-15: function and zero. 15-35: modules and reject. 35-70: score every scheme. 70-90: pick, write the price of one file, replay last year.
Do not send students to SUNO without the lyric. Do not send them to ramen with only adjectives. Application prints two bills of materials (3.6 versus 4.5). Case prints the lyric and S0 / S5 / S7.
