Metric Space Searching based on Random Bisectors and Binary Fingerprints

José María Andrade, César Alejandro Astudillo and Rodrigo Paredes

We present a novel index for approximate searching in metric spaces based on random bisectors and binary fingerprints. The aim is to deal with scenarios where the main memory available is small. The method was tested on synthetic and real-world metric spaces. Our results show that our scheme outperforms the standard permutant-based index in scenarios where memory is scarce.