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word-atlas — 词光 · Word Atlas — Illustrated IELTS vocabulary with 7,298 words, UK/US audio and FSRS review. Open-source app + CC BY 4.0 datas

Provides a large, licensed vocabulary dataset for language learning and NLP projects.

Steady
Signal score
32
Trajectory
→ Steady
7-day est. ~32

Why this scored 32

every term, weighted
Velocity+15.8 / 40

Engagement gained per hour since the last capture, against the fastest item on its own source

Acceleration+12.6 / 25

Whether that velocity is itself speeding up, as a per-hour rate

Cross-source spread+0.0 / 25

How many independent communities are talking about the same entity

Recency+8.0 / 10

Decays to zero over 14 days

Saturation penalty−4.1 / 30

Subtracted once something is big and old — we rank what's next, not what's peaked

Composite32.3

Weights are hand-tuned, not learned — we're calibrating them against realized trends as history accumulates. On a topic's first sighting there's no previous reading to compare against, so acceleration starts from a neutral prior rather than a measurement, and velocity falls back to engagement over its whole lifetime until a second reading exists. Full methodology

Outlook

low confidence · estimate, not a guarantee

7-day

~32

range 0–44

14-day

~33

range 0–47

30-day

~33

range 0–52

Signal history

7-day window (free)
1649

projected trajectory (estimate, not a guarantee)

Entities

wordatlas
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