Signalcrest
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dataentity · corroborated across sources

oceanbase

for db admins

Steady

9

signal score

1

live items

Cooling

7-day est. ~6

stackoverflow

Why this scored 9

every term, weighted
Velocity+1.5 / 40 max

Its fastest-moving item, measured against the pace of its own source

Acceleration+0.0 / 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 its own items come from

Recency+8.6 / 10 max

Decays to zero over 14 days, counted from when we first saw it

Saturation penalty0.6 / 30 max

Subtracted once something is big and old — sized by its biggest item, aged from when we first saw it

Composite9.5

Weights are hand-tuned, not learned — we're calibrating them against realized trends as history accumulates. On an entity'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

~6

range 39

14-day

~4

range 08

30-day

~3

range 08

Signal history

7-day window (free)

— — projected trajectory (estimate, not a guarantee)

The evidence

The live items this entity's score aggregates — every community independently talking about it right now. This is the corroboration, shown, not claimed.

  1. 17

    OceanBase 4.3.x: Hybrid query (ANN_SEARCH + WHERE clause) forces full table scan instead of Vector Index Pre-filtering

    Query optimization issue — for db admins

    stackoverflowdataSteady2d ago