PLATFORM PROFILEPrivate
Blackboard
1.82
B-index (V3.1)
EVENT HORIZON
Capture0.832
Escape0.456
Key Structural Insight
Legacy LMS
Eleven-Parameter Profile
Data Depth7/10
Memory8/10
Action5/10
Process7/10
Network5/10
Closeness6/10
Portability4/10
Substitutability5/10
Human Fallback5/10
Org Depth6/10
Momentum2/10
Capture Escape Extended
V3.1 Decomposition
| Component | Value | Formula |
|---|---|---|
| CES₄ capture core | 0.6703 | CES(d, m, a, p) |
| Knowledge synergy σₖ | 0.7483 | √(d · m) |
| Operability synergy σₒ | 0.5916 | √(a · p) |
| Synergy boost | 1.2010 | 1 + 0.3·(σₖ + σₒ)/2 |
| Org-depth multiplier | 1.3000 | 1 + 0.5·o |
| Momentum multiplier | 1.0600 | 1 + 0.3·t |
| Total Capture | 0.8320 | c·(1+0.5n)·core·syn·org·mom |
| CES₃ escape core | 0.4654 | CES(x, s, h) |
| Feedback attenuation | 0.7654 | max(0.3, 1 − 0.35·core) |
| Total Escape | 0.4562 | ε + escCore · feedback |
| B = Capture / Escape | 1.82 | 0.832 / 0.456 |
Scoring Rationale
Parameter Sensitivity
MARGINAL B-INDEX CHANGE PER ±1 SCORE SHIFT
CLOSE6+0.61
PORT4-0.22
ACT5+0.22
SUB5-0.20
FALL5-0.20
DATA7+0.19
PROC7+0.18
MEM8+0.18
NET5+0.15
ORG6+0.14
MOM2+0.10
+ raises B (deepens lock-in)− lowers B (aids escape)
Comparable Platforms — Education, Research & Professional Information (7 peers)
| # | Platform | Ticker | B-index | Zone | |
|---|---|---|---|---|---|
| 01 | Elsevier/Scopus | REL.L | 6.89 | BLACK HOLE | Profile → |
| 02 | Westlaw (Thomson Reuters) | TRI | 6.63 | BLACK HOLE | Profile → |
| 03 | LexisNexis | REL.L sub | 6.46 | BLACK HOLE | Profile → |
| 04 | Clarivate (Web of Science) | CLVT | 4.99 | BLACK HOLE | Profile → |
| 05 | Canvas LMS | INST | 3.17 | BLACK HOLE | Profile → |
| 06 | Turnitin | Private | 3.10 | BLACK HOLE | Profile → |
| 07 | Coursera | COUR | 0.62 | GROWING GRAVITY | Profile → |