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source: git/external/fastjet/contribs/Nsubjettiness/NEWS@ 49234af

ImprovedOutputFile Timing dual_readout llp
Last change on this file since 49234af was 35cdc46, checked in by Pavel Demin <demin@…>, 10 years ago

upgrade FastJet to version 3.1.0-beta.1, upgrade Nsubjettiness to version 2.1.0, add SoftKiller version 1.0.0

  • Property mode set to 100644
File size: 3.9 KB
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1-------------------------
2Version 2
3-------------------------
4
5This is a streamlining of the N-subjettiness code, developed mainly by TJ
6Wilkason. The core functionality is unchanged, but classes have been
7dramatically reorganized to allow for later expansion. Because the API for
8Njettiness has changed, we have called this v2 (http://semver.org).
9
10Note that we have maintain backwards compatibility for the typical ways that
11Nsubjettiness was used. In particular, all of the Nsubjettiness class code in
12the example file v1.0.3 from still compiles, as does the NjettinessPlugin class
13code that uses the default measure.
14
15The key new features are:
16
17 * NsubjettinessRatio: Direct access to tau_N / tau_M (the most requested
18 feature)
19 * MeasureDefinition to allow access to both normalized and unnormalized measures
20 * AxesDefinition to allow for access to more general axes modes
21 * Winner-Take-All recombination axes: a faster way to find axes than beta = 1
22 minimization, but with comparable performance.
23 * TauComponents to get access to the pieces of the N-(sub)jettiness
24 calculation.
25 * For clarity, split the example file into an example_basic_usage and
26 example_advanced_usage
27 * In Nsubjettiness, access to seedAxes() and currentAxes() to figure out the
28 axes used before and after minimization.
29 * In Nsubjettiness, access to currentSubjets() to get the subjet fourvectors.
30
31
32-- 2.1.0: (July 9, 2014) Inclusion of MeasureDefinition/AxesDefinition interface.
33 This was the first publicly available version of Nsubjettiness v2.
34-- 2.0.0: Initial release of v2.0. This was never officially made public.
35
36-------------------------
37Version 1
38-------------------------
39
40This was a new release using FastJet contrib framework, primary developed by
41Jesse Thaler.
42
43-- 1.0.3: Added inlines to fix compile issue (thanks Matthew Low)
44-- 1.0.2: Fixed potential dependency issue (thanks FJ authors)
45-- 1.0.1: Fixed memory leak in Njettiness.hh (thanks FJ authors)
46-- 1.0.0: New release using FastJet contrib framework. This includes a new
47makefile and a simplified example program.
48
49-------------------------
50Previous Versions
51-------------------------
52
53The previous versions of this code were developed initially by Ken Van Tilburg,
54tweaked by Jesse Thaler, and made into a robust FastJet add on by Chris
55Vermilion.
56
57Previous versions available from:
58 http://jthaler.net/jets/Njettiness-0.5.1.tar.gz (Experimental Version)
59 http://jthaler.net/jets/Njettiness-0.4.1.tar.gz (Stable Version)
60
61Previous version history:
62-- 0.5.1: For Njettiness Plugin, added access to currentTau values and axes via
63 ClusterSequence::Extras class. (thanks to Dinko Ferencek and John
64 Paul Chou)
65-- 0.5.0: Corrected fatal error in ConstituentTauValue (TauValue unaffected).
66 Started process of allowing for more general measures and alternative
67 minimization schemes. Extremely preliminary inclusion of alternative
68 "geometric" measure.
69-- 0.4.1: Corrected bug where a too-small value of Rcut would cause the
70 minimization procedure to fail (thanks Marat Freytsis, Brian Shuve)
71-- 0.4.0: Adding Nsubjettiness FunctionOfPseudoJet<float>. Re-organizing file
72 structure and doing some re-naming to clarify Njettiness vs.
73 Nsubjettiness. Some speedup in UpdateAxes code. (CKV)
74-- 0.3.2: Returns zero instead of a segmentation fault when the number of
75 particles in a jet is smaller than the N value in tau_N (thanks
76 Grigory Ovanesyan)
77-- 0.3.2: Fixed -Wshadow errors (thanks Grigory Ovanesyan)
78-- 0.3.1: Fixed stray comma/semicolon compiler error (thanks Grigory Ovanesyan)
79-- 0.3.1: Corrected tarbomb issue (thanks Jonathan Walsh)
80-- 0.3.1: Added anti-kT seeds as option
81-- 0.3.1: Fixed bug in minimization code with R_cutoff (thanks Chris Vermilion)
82-- 0.3.1: Added getPartition() and getJets() functions as helper functions for
83 Chris Vermilion. (JT)
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