Released Code by Rui Zhang

1. iDistance:
   Version 1.0 (500KB);
   Version 1.0 with 32d color histogram dataset (9MB);
   Related paper: iDistance: An Adaptive B+-tree Based Indexing Method for Nearest Neighbor Search. ACM Transactions on Data Base Systems (TODS), 30(2), 364-397, 2005.
   　
2. GiMP: the code package for Generalized Multi-dimensional Data Mapping and Query Processing.
   Version 1.1 (675KB, the default implementation is iDistance);
   Version 1.1 with 32d color histogram dataset (9.18MB, the default implementation is iDistance)
   Related paper: Generalized Multi-dimensional Data Mapping and Query Processing. ACM Transactions on Data Base Systems (TODS), 30(3): 661-697, 2005.
   　
3. P+-tree:
   Version 1.0 (324KB);
   Version 1.0 with 16d uniform dataset (8.6MB)
   Related paper: Making the Pyramid Technique Robust to Query Types and Workload. International Conference on Data Engineering (ICDE), Boston, 2004.