Publications (5)3.11 Total impact
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ABSTRACT: A new stable version ("production version") v5.28.00 of ROOT  has been published . It features several major improvements in many areas, most noteworthy data storage performance as well as statistics and graphics features. Some of these improvements have already been predicted in the original publication Antcheva et al. (2009) . This version will be maintained for at least 6 months; new minor revisions ("patch releases") will be published  to solve problems reported with this version.
Article: Developments in ROOT I/O and trees
Article: Developments in ROOT I/O and trees[Show abstract] [Hide abstract]
ABSTRACT: For the last several months the main focus of development in the ROOT I/O package has been code consolidation and performance improvements. We introduced a new pre-fetch mechanism to minimize the number of transactions between client and server, hence reducing the effect of latency on the time it takes to read a file both locally and over wide are network. We will review the implementation and how well it works in different conditions (gain of an order of magnitude for remote file access). We will also briefly describe new utilities, including a faster implementation of TTree cloning (gain of an order of magnitude), a generic mechanism for object references, and a new entry list mechanism tuned both for small and large number of selections. In addition to reducing the coupling with the core module and becoming its owns library (libRIO) (as part of the general restructuring of the ROOT libraries), the I/O package has been enhanced in the area of XML and SQL support, thread safety, schema evolution, tree queries, and many other areas.
Article: ROOT statistical software[Show abstract] [Hide abstract]
ABSTRACT: Advanced mathematical and statistical computational methods are required by the LHC experiments for analyzing their data. Some of these methods are provided by the ROOT project, a C++ Object Oriented framework for large scale data handling applications. We review the current mathematical and statistical classes present in ROOT, emphasizing the recent developments.
Article: Statistics in Root[Show abstract] [Hide abstract]
ABSTRACT: The ROOT 1 system is an Object Oriented framework for large scale data handling applications. Advanced statistical analysis tools constitute an important part of the system. This paper describes ROOT'S mathematical and statistical libraries. A general overview of the system is given, with special attention payed to recently added methods.