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Update: 2026-07-06 17:51:16

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Hamza-Ayed
2026-07-06 17:51:16 +03:00
parent e21e1f4ec2
commit 9d257c5d7d
8 changed files with 292 additions and 241 deletions
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backend/pricing-engine/src/analysis/regression.ts
-25
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@@ -93,28 +93,3 @@ export function analyzeTier(tier: PricingTier): PricingTier {
export function analyzeAllTiers(tiers: PricingTier[]): PricingTier[] {
return tiers.map(tier => analyzeTier(tier));
}
/**
* Simple distance-only regression for comparison.
* price = kmRate * dist
*/
export function distanceOnlyRegression(
samples: RideSample[]
): { kmRate: number; rmse: number } | null {
if (samples.length < 3) return null;
const distances = samples.map(s => s.distance_km);
const prices = samples.map(s => s.price);
// Simple average of price/km
const ratios = distances.map((d, i) => d > 0 ? prices[i] / d : 0)
.filter(r => r > 0 && isFinite(r));
if (ratios.length < 3) return null;
const kmRate = mean(ratios);
const predicted = distances.map(d => kmRate * d);
const rmse = calcRMSE(prices, predicted);
return { kmRate, rmse };
}