The Advanced Analysis Group (Run2AAG), which operates under the aegis of the Run II Advanced Analysis Workshop, is comprised of the following working groups
Members
Pushpa Bhat
Catalin Ciobanu
Phil Koehn
Jim Kowalkowski
Marc Paterno
Harrison Prosper
Antonio Sidoti
This
group is charged with providing convenient interfaces to useful algorithms and
software, in an experiment-independent manner, and to make these interfaces
easily available to workshop participants. The group is responsible for
documentation, bug-fixes and responding to participants' requests for
enhancements. The group's guiding principles will be:
a) To re-use as much existing code as possible whether coded in C, C++ or FORTRAN and to develop new code for algorithms only if there is a compelling reason to do so; for example, no code exists or the existing code is simply too opaque to warrant effort to understand it.
b) Interfaces should be as simple as possible and, to the degree possible, uniform across analysis environments. The latter will be those actually used by physicists or that can be quickly learned (and remembered) by them with a minimum of effort. The goal is to enable participants of the Run II Advanced Analysis Workhop (with varying levels of computer skills) to do real work, namely, apply advanced multivariate algorithms to specific physics topics in order to assess their potential for significantly improving physics analyses.
c) To build interfaces in simple (yet powerful) interpreted environments such as Python under a limited number of operating systems, for example, Linux and Windows.
d)
Ideally, no compilation or linking should be necessary to use the interfaces.
That is, the group will provide binaries in the form of shared object libraries
(SOLs) under Linux or dynamic load libraries (DLLs) under Windows. (The group
may, at some point, consider providing a web-based mechanism to allow workshop
participants to create their own SOLs and DLLs from private C, C++ or FORTRAN
codes. A user would upload source code and get back the corresponding SOL or
DLL that could then be imported into, for example, Python.)
Here is an incomplete list of algorithms/software for which interfaces are needed:
Algorithms
Neural
Networks (e.g, JETNET, MLPfit, SNN)
RaGS
(Random Grid Search)
PDE
(Probability Density Estimation)
PCA
(Principal Component Analysis)
ICA
(Independent Component Analysis)\
PC
(Projection Pursuit)
Markov
Chain Monte Carlo (for Bayesian analysis)
Bayesian
Fitting
Utilities
Hbook
Root
Histoscope
Cernlib
Open Inventor (3D Graphics)
Members
Alexander Belyaev
John Conway
Serban Protopopescu
This
group is charged with providing simulated data in a convenient form, using
tools provided by the Tools Group. We anticipate that the workshop participants
will identify the set of reactions to be simulated and provide this group with
specific requests. We anticipate providing ntuples that contain Monte Carlo
simulations of Higgs, SUSY, Single Top and Leptoquark events, together with the
most important backgrounds. The ntuples will contain both parton level as well
as reconstruction level objects. Some mechanism, as yet unspecified, will be
developed to allow the easy inclusion of event variables derived from the
underlying event objects. The goal is to provide a uniform set of ntuples that
all participants can somehow contribute to and share. However, in the short
term the ntuples will probably contain event objects only.
PGS (Pretty Good Simulator). This code, which
was developed during the Run II SUSY/Higgs Workshop, provides a fast simulation
(thought to be accurate to about 15%) of the response of typical collider
experiments to high energy collision events. PGS includes an interface to
PYTHIA and ISAJET. It will be extended to include HERWIG, and to allow the
loading of 4-vectors generated with other programs such as CompHEP.
Members
Everyone!
(A list of specific projects
and names will appear!)
Workshop participants will be
encouraged to concentrate on a specific topic and try to apply to it a specific
multivariate method. Each such effort should be documented and will eventually
appear as part of a general workshop report.
Members
Louis
Lyons
Harrison Prosper
John Conway
Jim Linnemann
Pushpa Bhat
This group will focus on the statistical problems that arise from the workshop. However, from time to time it will also address some general issues that have bearing on all analyses. This group will also make available the results of deliberations of other similar groups withinhigh energy physics.
Last updated Feb. 15, 2001, Harrison B.
Prosper and Pushpa Bhat