ROOT, an object oriented data analysis framework

The ROOT system in an Object Oriented framework for large scale data analysis. ROOT written in C ++, contains, among others, an efficient hierarchical 00 database, a C ++ interpreter. advanced statistical analysis (multi-dimensional histogramming, fitting, minimization, cluster finding algorithms) and visualization tools. The user interacts with ROOT via a graphical user interface, the command line or batch scripts. The command and scripting language is C + + (using the interpreter) and large scripts can be compiled and dynamically linked in. The 00 database design has been optimized for parallel access (reading as well as writing) by multiple processes.