My BIRCH implementation is based on the paper: T Zhang, R Ramakrishnan, M Livny. "BIRCH: A new data clustering algorithm and its applications". Journal of Data Mining and Knowledge Discovery, Vol. 1, Num. 2, 1997. Although there provides test executable files, birch-clustering-algorithm is basically in a library form. It is strongly recommended applying this library to another program - Taesik Yoon (otterrrr@gmail.com)