# APAC Tertiary-Institution Quality Index — Full Roster Results (2026-06)

32 clusters, 50 anchor institutions, all four pillars. Supersedes the 5-cluster provisional map.
Method per `apac-institution-quality-index-spec.md` v0.1: base-effect log-damping → tier-relative z-score (locked) + a global-z view for cross-tier comparison; retention = additive level pillar.

## Cross-tier map (global z; origin = roster average)

```
  TRAJECTORY (momentum) ^   [global z; origin = roster avg]
                       Jk     |
      Dk                  Ta  |          Hy
                              |
                            Vn|
                             Mn        Ch
                              |         Dl
                    HK        |
                              | Az
                              |  Mu
                              |      Kg
  ----------------Ul----------+-Bk-------------------------------- LEVEL ->
                 We  Ak       | Sg   Bg
                      Mb      |
                              |             Se
                     Br       |
                              |        Ts
                              |                              Po
                       Pe     |        Ng
                  Cb          |
                              |            Tk
                              |           Kh
                              |                    Dj
```
Codes: Sg Singapore · Se Seoul · Dj Daejeon · Po Pohang · Tk Tokyo · Kh Keihanshin · Ng Nagoya · Ts Tsukuba · Bg Bengaluru · Dl Delhi · Mu Mumbai · Ch Chennai · Hy Hyderabad · Kg Kharagpur · KL Klang Valley · Jk Jakarta · Bk Bangkok · Mn Manila · Vn Vietnam · Dk Dhaka · Mb Melbourne · Sy Sydney · Cb Canberra · Br Brisbane · Pe Perth · Ak Auckland · We Wellington · Cc Christchurch · Az Astana–Almaty · Ta Tashkent · Ul Ulaanbaatar · HK Hong Kong

## Quadrant reading
- **Accelerating leaders** (high level + high momentum): **Hyderabad, Chennai, Delhi** (the IIT catch-up cohort) — the standout cell.
- **Rising stars** (low level, high momentum): Jakarta, Tashkent, Dhaka, Vietnam, Hong Kong.
- **Established / plateauing** (high level, low momentum): **Pohang, Daejeon, Seoul, Tokyo, Keihanshin, Nagoya, Tsukuba** — the Korea/Japan frontier: top captured quality, low growth.
- **Lagging** (low level, low momentum): the Australia/NZ clusters (Canberra, Perth, Brisbane, Wellington, Christchurch, Auckland) and Ulaanbaatar.

## Global-z composite (cross-tier comparable), sorted by Level

| Cluster | Tier | Level | Traj |
|---|---|---|---|
| Pohang | frontier | 1.60 | −0.71 |
| Daejeon | frontier | 1.10 | −1.52 |
| Seoul | frontier | 0.74 | −0.41 |
| Tokyo | frontier | 0.67 | −1.08 |
| Keihanshin | frontier | 0.64 | −1.36 |
| Hyderabad | catchup | 0.55 | **1.22** |
| Delhi | catchup | 0.49 | 0.64 |
| Chennai | catchup | 0.47 | 0.81 |
| Nagoya | frontier | 0.44 | −0.87 |
| Tsukuba | frontier | 0.44 | −0.55 |
| Klang Valley | catchup | 0.43 | −0.10 |
| Bengaluru | catchup | 0.34 | −0.04 |
| Kharagpur | catchup | 0.33 | 0.17 |
| Mumbai | catchup | 0.16 | 0.35 |
| Astana–Almaty | emerging | 0.11 | 0.37 |
| Bangkok | catchup | 0.11 | 0.09 |
| Singapore | frontier | 0.11 | −0.13 |
| Manila | emerging | −0.04 | 0.85 |
| Vietnam | emerging | −0.12 | 0.96 |
| Tashkent | emerging | −0.23 | 1.16 |
| Perth | frontier | −0.36 | −0.81 |
| Jakarta | catchup | −0.36 | **1.29** |
| Sydney | frontier | −0.42 | −0.47 |
| Melbourne | frontier | −0.45 | −0.22 |
| Auckland | frontier | −0.45 | −0.15 |
| Christchurch | frontier | −0.45 | −0.06 |
| Brisbane | frontier | −0.50 | −0.46 |
| Hong Kong | frontier | −0.53 | 0.57 |
| Ulaanbaatar | emerging | −0.64 | 0.04 |
| Canberra | frontier | −0.65 | −1.05 |
| Wellington | frontier | −0.67 | −0.13 |
| Dhaka | emerging | −1.28 | 1.14 |

## Tier-relative momentum (who's rising *within* their peer group)
- **Frontier** rising-stars: Hong Kong, Christchurch, Auckland, Wellington, Melbourne, Sydney (Anglo + HK gaining on the Asian frontier); established: Pohang, Daejeon, Tokyo, Keihanshin, Nagoya.
- **Catch-up**: Jakarta (rising-star); Hyderabad, Chennai, Delhi (accel-leaders); Bengaluru, Klang Valley, Kharagpur (established); Bangkok, Mumbai (lagging).
- **Emerging**: Tashkent, Dhaka (rising-star); Vietnam (accel-leader); Manila, Astana–Almaty (established); Ulaanbaatar (lagging).

## Key findings
1. **Korea + Japan dominate captured quality** (Pohang, Daejeon, Seoul, Tokyo, Keihanshin top the Level axis) — driven by high domestic-firm linkage (Pohang 75%, Tokyo 68%) and retention (~80–87%). But they are **plateauing** (most negative trajectory) — the mature-frontier signature.
2. **The IIT catch-up cohort (Hyderabad, Chennai, Delhi) is the genuine accelerating-leader cell** — already above roster-average on captured quality *and* fastest-growing. The clearest "rising in a way that should feed competitiveness" story.
3. **Australia/NZ score low on *captured* quality** despite research strength — because the index weights domestic-firm linkage (~10–13%, a resource/MNC economy), STEM share (AUS 17%), and retention. This is a value-capture reading, not a research-output reading; interpret accordingly (§11).
4. **Hubs (Hong Kong, Singapore) are pulled down by the retention pillar** (HK 20.5%, SG 39%) — the known foreign-trainee-return confound, now additive (not multiplicative) so the drag is bounded. Both still show positive momentum.
5. **Emerging risers** (Dhaka, Tashkent, Jakarta, Vietnam) cluster top-left: explosive momentum off low bases. (Manila, now correctly on UP Diliman, sits mid-pack — established, not a riser.)

## Caveats & accepted limitations
*(Acknowledged as known limitations of this build, not blocking — to be revisited only if the index goes to external/formal use.)*
- **Pillar A imputation:** Japan and Hong Kong have no World Bank STEM-share data → imputed with tier means. Affects the 4 Japan clusters + HK on Level.
- **Australia enrolment CAGR (−4.1%)** likely reflects the COVID international-student collapse, not a real capacity decline — A-trajectory for AUS is suspect.
- **Small samples:** Tashkent (domestic-firm n=4, retention n=5), Astana–Almaty (n≈21–35), Manila (n=41) — low-output clusters have noisy Pillar B/D proxies.
- ~~Manila = UP Manila~~ **fixed (2026-06):** Manila now resolves to UP Diliman (flagship) + Ateneo; recomputed — Manila moved from "rising star" to "established".
- **Retention is bibliometric proxy** — valid for non-hubs; hub values (SG/HK, partly AUS/NZ) need migration/labour data to be fair.
- **Domestic-firm & retention sampled at the primary anchor only** per cluster (not all anchors).

## Data lineage (in pilot_data/)
ids.tsv (roster+IDs) · stage2.tsv (Pillar C/B counts, 50 inst) · stage3_pillarA.tsv (World Bank, 16 countries) · stage4.tsv (domestic-firm + retention, 32 anchors) · stage5_composite.tsv (final Level/Traj) · resolve.py/stage2-5.py (reproducible pipeline).

---

# §11 Per-Economy Interpretation Layer (built 2026-06)

**Method.** The two value-capture metrics — domestic-firm linkage (Pillar B level) and retention (Pillar D) — are scored as **deviation from the cluster's own economic-model baseline** (residual ÷ global residual spread), instead of against a universal mean. Performance metrics (research C, human-capital A) stay tier-relative as locked. This stops the index from penalizing economies whose *structurally* low value-capture reflects their economic model, not university weakness.

**Economic-model taxonomy** (judgment call — documented as such):
- **national-champion** (KOR, JPN): Seoul, Daejeon, Pohang, Tokyo, Keihanshin, Nagoya, Tsukuba
- **conglomerate** (IND): Bengaluru, Delhi, Mumbai, Chennai, Hyderabad, Kharagpur
- **advanced-open** (SGP, HKG, AUS, NZL): Singapore, Hong Kong, Melbourne, Sydney, Canberra, Brisbane, Perth, Auckland, Wellington, Christchurch
- **emerging-FDI** (MYS, VNM, THA, IDN): Klang Valley, Vietnam, Bangkok, Jakarta
- **emerging-thin** (BGD, PHL, KAZ, UZB, MNG): Dhaka, Manila, Astana–Almaty, Tashkent, Ulaanbaatar

## Two lenses — read them together
The naive and §11 Levels answer **different questions**, and the *gap* between them is the insight:
- **Naive Level = absolute local value-capture** ("how much value does the economy actually retain/feed locally?") — the competitiveness-relevant quantity; Korea/Japan lead because they genuinely capture more.
- **§11 Level = university quality net of economic structure** ("how good is the system, controlling for its economy?") — fairly credits AUS/HK; stops conflating university quality with economic model.

| Pattern | Clusters | Meaning |
|---|---|---|
| High naive, **low §11** | Seoul, Daejeon, Tokyo, Keihanshin, Tsukuba | Strong capture is largely the *economy's* structure; universities good-not-exceptional among champion peers |
| **Low naive, high §11** | Australia/NZ, Hong Kong | Strong universities **held back by economic structure** (deep-tech-industry gap, not a university gap) |
| High on **both** | **Pohang, Hyderabad, Chennai** | Genuinely exceptional on their own terms |
| Low on **both** | Dhaka, Ulaanbaatar | Thin across the board |

## §11 model-adjusted map
```
  TRAJECTORY ^   [§11 model-adjusted Level; origin=roster avg]
                             |                                    
                         Jk  |                                    
     Dk                    Ta|               Hy                   
                             |                                    
                            Vn                                    
                             |  Mn         Ch                     
                             |      Dl                            
                       HK    |                                    
                             |           Az                       
                             Mu                                   
                             |   Kg                               
  -----------------Ul--------+---Bk-------------------------------
                      We     Ak  Bg KL                            
                            Mb                                    
                   Se        |                                    
                           Bry                                    
                    Ts       |                                    
                             |                               Po   
                            NgPe                                  
                      Cb     |                                    
                             | Tk                                 
                             |                                    
                             |Kh                                  
                             |  Dj                                
                             |                                    
  MODEL-ADJUSTED LEVEL (quality net of economic model) ->
```

## §11 effect (Level change vs naive), selected
| Cluster | Model | Naive | §11 | Δ |
|---|---|---|---|---|
| Auckland | advanced-open | −0.45 | −0.01 | +0.44 |
| Melbourne | advanced-open | −0.45 | −0.05 | +0.40 |
| Hong Kong | advanced-open | −0.53 | −0.35 | +0.18 |
| Singapore | advanced-open | 0.10 | 0.18 | +0.08 |
| Pohang | national-champion | 1.60 | 1.70 | +0.10 |
| Tokyo | national-champion | 0.67 | 0.09 | −0.58 |
| Daejeon | national-champion | 1.10 | 0.17 | −0.93 |
| Seoul | national-champion | 0.75 | −0.57 | −1.31 |

**Recommendation:** report naive + §11 side by side. Naive answers the competitiveness hypothesis directly (absolute capture); §11 isolates university quality. Neither alone is complete.

## §11 caveats
- **Model assignment is a judgment call** (e.g. Vietnam→emerging-FDI, Central Asia→emerging-thin); sensitivity to regrouping not yet tested.
- **Astana–Almaty +0.49** is inflated by a tiny-sample domestic-firm value (34% on n=35) sitting far above the emerging-thin baseline — small-sample artifact, not a real signal.
- A finer build would use **separate model groupings for industry-capture vs talent-capture** (e.g. SG/HK are transit-hubs for talent but MNC-hubs for industry; Vietnam is FDI-industry but brain-drain for talent) — collapsed here into one taxonomy.
- Data: `stage6_peconomy.tsv`, `stage6_peconomy.py`, `map_s11_ascii.txt` in pilot_data/.

---

# Sensitivity analysis (built 2026-06, stage7_sensitivity.py)

Tests whether the conclusions are robust to the two judgment-laden choices: **pillar weights** and **§11 model groupings**.

## 1. Weight robustness — the index is stable
- **Equal-weights vs base tier-weights: Spearman ρ = 0.990.** The whole weighting scheme barely moves the ranking — results are *not* an artifact of the chosen weights.
- **Monte-Carlo (3000 Dirichlet draws around base weights):** top and bottom are pinned — Pohang (rank 1→1), Daejeon (2→2), Dhaka (32→32) never move; the Korea/Japan champions, the IIT cohort, and Australia/NZ all swing ≤5 ranks.
- **Genuinely weight-sensitive clusters** (rank swing ≥10, p5–p95): **Singapore (7–20), Tashkent (14–29), Klang Valley (3–15), Hong Kong (21–31), Nagoya (6–16).** These are exactly the model-contested / small-sample clusters already flagged — sensitivity localizes the uncertainty rather than undermining the headline.

## 2. Leave-one-pillar-out (ρ with base ranking)
| Pillar dropped | ρ | Biggest mover | Reading |
|---|---|---|---|
| A human capital | 0.899 | Tashkent 20→32 | Tashkent's rank was propped by high STEM share (UZB 34.5%) |
| B innovation | 0.883 | Keihanshin 5→16 | Japan's standing leans on domestic-firm linkage (national-champion) |
| C research | 0.949 | Ulaanbaatar 29→20 | weak-research clusters rise when C is removed |
| D retention | 0.937 | **Hong Kong 28→17** | **quantifies the retention drag: HK rises 11 ranks without it** |

All ρ ≥ 0.88 → no single pillar drives the result; each contributes without dominating.

## 3. §11 model-grouping robustness
- **ALT1** (merge the two emerging groups): ρ = 0.978 — robust; Vietnam moves most (22→13).
- **ALT2** (split advanced-open into MNC-hub SG/HK vs resource AUS/NZ): ρ = 0.958 — robust; **Hong Kong 26→15, Singapore 10→5** (a 2-member hub group flatters them further). Grouping choice matters most for the hubs — exactly where flagged — but overall §11 ranking is stable.

## Verdict
The headline conclusions are **robust**: Korea/Japan lead captured quality (and plateau); the IIT cohort (Hyderabad/Chennai/Delhi) are the accelerating leaders; emerging risers and the AUS/NZ "captured-quality gap" all survive perturbation. The **only genuinely fragile positions are Singapore, Hong Kong, Tashkent, and Klang Valley** — the model-contested and small-sample clusters — which should be read with the §11 second lens and sample caveats, not as point estimates.

---

# Refinements round 2 (2026-06)

## R1. Dual model groupings (industry vs talent)
The §11 single taxonomy is split: **domestic-firm linkage** is benchmarked against an *industry-structure* model, **retention** against a *talent-flow* model — because they diverge. (E.g. Australia/NZ are resource-services for industry but education-hub-transit for talent; Vietnam is MNC-dependent for industry but brain-drain for talent.)
- Industry models: national-champion (KOR/JPN), conglomerate (IND), MNC-dependent (SGP/HKG/MYS/VNM/THA/IDN), resource-services (AUS/NZL/KAZ/MNG), thin-industrial (BGD/PHL/UZB).
- Talent models: strong-retention (KOR/JPN), education-hub-transit (SGP/HKG/AUS/NZL), large-domestic (IND), brain-drain-emerging (rest).
- Effect: Hong Kong (+0.33) and Singapore (+0.21) rise more cleanly than under the single taxonomy; **Astana–Almaty's small-sample spike is tempered (+0.21 vs +0.49)**. Data: stage8_dualmodel.tsv / .py.

## R2. Real STEM data for Japan & Hong Kong (replaces imputation)
- **Japan = 20.0%** (OECD Education at a Glance 2025: 20% of bachelor's graduates in STEM, vs OECD avg 23%). Slightly *below* the prior tier-mean imputation → Japan clusters ease down marginally (correct direction).
- **Hong Kong = 33.0%** (estimate from UGC broad-academic-category enrolment: Sciences + Engineering/Technology ≈ a third of UGC-funded students; documented as approximate, not a UIS figure). *Above* the prior imputation.
- Combined with R1, Hong Kong moves from −0.53 (naive, double-penalised by low-imputed STEM + hub retention) to **+0.11** (dual-§11) — now near roster-average, far fairer.

## R3. Real migration data for hub retention — attempted; validates §11
- **Data dead-ends:** the canonical World Bank indicator `SM.EMI.TERT.ZS` (emigration rate of tertiary educated) exists in the catalogue but has **no API time-series**; the underlying Docquier/WB-Factbook brain-drain data is static (~2000–2010 vintage) and the source PDFs would not parse here. A full implementation needs OECD DIOC or KNOMAD bilateral micro-data.
- **What the evidence shows (and it validates the §11 dual-model rather than requiring new inputs):**
  - **Singapore** is a *net skilled-talent magnet* — its low bibliometric retention (39%) is a transit confound; true national retention is high. → §11 education-hub-transit benchmarking already corrects this (Singapore +0.21). ✓
  - **Hong Kong** has *genuine* skilled emigration (large historical diaspora to CA/AU/US **plus** a post-2020 National-Security-Law wave; MigrationPolicy.org, East Asia Forum) — so its low retention is **partly real, not pure transit**. Caveat: do **not** over-rescue HK beyond the dual-model correction.
  - **New Zealand** leaks skilled labour to Australia (real outflow) — its moderate retention is partly genuine.
  - **Korea/Japan** have low skilled emigration → genuine high retention (confirms the bibliometric reading).
  - The bibliometric proxy already ranks **Singapore (39%) > Hong Kong (20.5%)**, matching the migration reality (magnet vs. real drain) — so the *relative* ordering is sound; only the *absolute* hub level was confounded, which §11 fixes.
- **Conclusion:** no model change beyond §11 dual-model is warranted on current evidence; migration data confirms the structural fix and adds the "don't over-correct HK" caveat. Replacing the proxy with real bilateral data remains the only true fix for formal/external use.

## Final map (Level = dual-model §11; Japan/HK STEM sourced)
```
  TRAJECTORY ^   [Level = dual-model §11; Japan/HK STEM sourced]
                             |                                    
                           Jk|                                    
     Dk                   Ta |              Hy                    
                             |                                    
                             |Vn                                  
                             | Mn          Ch                     
                             |      Dl                            
                             | HK                                 
                             |     Az                             
                             Mu                                   
                             |   Kg                               
  ------------Ul-------------+-----Bk-----------------------------
                      We     Ak  BgSgKL                           
                            Mb                                    
                   Se        |                                    
                           Bry                                    
                   Ts        |                                    
                             |                               Po   
                           Ng|Pe                                  
                       Cb    |                                    
                             |Tk                                  
                             |                                    
                            Kh                                    
                             |  Dj                                
                             |                                    
  MODEL-ADJUSTED LEVEL ->
```
