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[#91] Add prior activity threshold for rising algorithm #102

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Merged
realproject7 merged 1 commit into from
Mar 15, 2026
Merged

[#91] Add prior activity threshold for rising algorithm #102

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20 changes: 17 additions & 3 deletions lib/ranking.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -161,7 +161,15 @@ export async function getRisingStorylines(
const threeDaysAgo = new Date(now.getTime() - 3 * 24 * 60 * 60 * 1000).toISOString();
const sixDaysAgo = new Date(now.getTime() - 6 * 24 * 60 * 60 * 1000).toISOString();

const storylineIds = storylines.map((sl) => sl.storyline_id);
// Exclude storylines younger than the prior window (6 days) — they have
// no meaningful prior activity to compare against.
const eligible = storylines.filter((sl) => {
if (!sl.block_timestamp) return false;
return new Date(sl.block_timestamp).getTime() <= new Date(sixDaysAgo).getTime();
});
if (eligible.length === 0) return [];

const storylineIds = eligible.map((sl) => sl.storyline_id);

// Batch: windowed ratings
// eslint-disable-next-line @typescript-eslint/no-explicit-any
Expand Down Expand Up @@ -205,10 +213,10 @@ export async function getRisingStorylines(

// Single parallel batch for all on-chain reads
const onChainResults = await Promise.all(
storylines.map((sl) => enrichWithOnChain(sl)),
eligible.map((sl) => enrichWithOnChain(sl)),
);

const enriched = storylines.map((sl, i): RankedStoryline => {
const enriched = eligible.map((sl, i): RankedStoryline => {
const { priceChange, tvlRaw, tvlDecimals } = onChainResults[i];

// Recent window composite (all 4 signals)
Expand All @@ -235,6 +243,12 @@ export async function getRisingStorylines(
sixDaysAgo,
);

// Require minimum prior activity (at least 1 rating or 1 plot in prior window)
const hasPriorActivity = priorAvgRating > 0 || priorPlotCount > 0;
if (!hasPriorActivity) {
return { ...sl, trendScore: 0 };
}

// Rise = recent / prior (acceleration ratio)
const trendScore = recentScore / (priorScore + 0.01);

Expand Down
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