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Dev tools · August 27, 2026

BloodLink

MILP-based emergency blood donor matching engine

What it does

BloodLink is an open-source web app using Mixed-Integer Linear Programming (MILP) to optimize emergency blood donor selection. Instead of broadcast alert spam, BloodLink scores donors on Distance (35%), Health (33%), and Reliability (31%) to instantly select the top N primary donors + 1 backup. It features real-time MILP solving, interactive route mapping, and a hospital outcomes tracker to update donor eligibility.

An emergency blood donor matching system using Mixed-Integer Linear Programming (MILP) to instantly assign optimal primary and backup donors based on distance, health and reliability scores. - bvklabs/BloodLink

BloodLink is a proof-of-concept web application designed to solve the inefficiencies of traditional blood donation alerts. Instead of spamming all nearby donors during an emergency, BloodLink uses a Mixed-Integer Linear Programming (MILP) optimization engine to instantly calculate and assign the mathematically optimal primary and backup donors. It balances Haversine distance, historical donation reliability, donor health scores, and strict 90-day rest constraints to ensure rapid, reliable emergency response. BloodLink bridges the gap between complex operational research and real-time consumer applications. The core optimization engine evaluates all eligible donors and selects the absolute…from github.com

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