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FDE-the-Guidance-Book-of-Forward-Deployed-Engineer — FDE（前沿部署工程师）从零入门指南（基于范冰《增长黑客》原书框架）

FDE guidance book

Steady

14

signal score

→ Steady

7-day est. ~13

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Why this scored 14

every term, weighted
Velocity+9.3 / 40 max

Engagement per hour, normalized against the fastest item on its own source

Acceleration+0.8 / 25 max

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

Cross-source spread+0.0 / 25 max

How many independent communities are talking about the same entity

Recency+8.0 / 10 max

Decays to zero over 14 days

Saturation penalty−3.7 / 30 max

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

Composite14.4

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. Full methodology

Outlook

low confidence · estimate, not a guarantee

7-day

~13

range 12–14

14-day

~12

range 11–13

30-day

~12

range 11–14

Signal history

7-day window (free)

— — projected trajectory (estimate, not a guarantee)

Entities

fde
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Drop this in a README or blog post — it updates automatically as the score moves.