Gate: not computable — history 1 of 4 weekly observations
Gate: not computable — history 1 of 4 weekly observations
position in cohort distributionone of 28 in cohort
percentile
p37
momentum is the combined velocity and citation signal, percentile within cohort
velocity z
velocity z
-0.12 σ
slope
+0.000/wk
log-slope +0.000/wk
citation z
∅no citation axis
Citation source: not measured.
cohort
28
systems measured
weekly commits
0
Development velocity axis: measured.
total citations
n/a
Citation source: not measured.
momentum
48.5
percentile p37
commit heatmap, last 26 weeks0/wk
weeks
26
peak/wk
0
active
0
total
0
citations by yearCitation source: not measured.
∅Citation source: not measured.
d2l-zh holds an Evidaxis momentum score of 48.5 of 100 on methodology m2, snapshot 2026-08-22, measured within the Unassigned (AI-v1 census) cohort (n = 28). Axis coverage: 1 measurable axis. Gate: not computable — history 1 of 4 weekly observations
Derived signals
second-order reads, computed from the published series
Three signals ship when the commit series is statistically sufficient; the rest are held in a reserved state
until the data supports them. A reserved signal shows its reason, never a fabricated number.
How these are computed.
swing
+0.00×
regime
flat
windows
13w vs 39w
snapshot 1 of 1 ·· m2
commit Sharpereserved: <26 non-zero commit weeks
changepoint
none detected
snapshot 1 of 1 ·· m2
code-leads-citation lagreserved
reserved: citation series too short / axis absent for cross-correlation
status
reserved
value
insufficient data
snapshot 1 of 1 ·· m2
axis alpha vs cohortreserved
reserved: cohort N too small for regression (power ~0)
status
reserved
value
insufficient data
snapshot 1 of 1 ·· m2
gate ETAreserved
reserved: needs snapshot history (1 snapshot exists)
status
reserved
value
insufficient history
snapshot 1 of 1 ·· m2
methodology gate
snapshot 1 of 1 ·· m2
commit weeks
52
citation years
0
shipped
2
reserved
4
shipped
recency-swing
commit-changepoint
reserved
commit-sharpe
code-leads-citation-lag
axis-alpha
gate-eta
snapshot 1 of 1 ·· m2
Measurement states
d2l-zh is under weekly measurement. History: 1 of 4 weekly observations. Development velocity axis: measured. Citation source: not measured. Gate: not computable — history 1 of 4 weekly observations