initial version (v7.0)

Author: sameer-pradhan

README.txt

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+NAME
+   CorScorer: Perl package for scoring coreference resolution systems
+   using different metrics.
+
+
+VERSION
+   v7.0 -- reference implementations of MUC, B-cubed and CEAF metrics.
+
+
+INSTALLATION
+   Requirements:
+      1. Perl: downloadable from http://perl.org
+      2. Algorithm-Munkres: included in this package and downloadable
+         from CPAN http://search.cpan.org/~tpederse/Algorithm-Munkres-0.08
+
+USE
+   This package is distributed with two scripts to execute the scorer from
+   the command line.
+
+   Windows (tm): scorer.bat
+   Linux: scorer.pl
+
+
+SYNOPSIS
+   use CorScorer;
+
+   $metric = 'ceafm';
+
+   # Scores the whole dataset
+   &CorScorer::Score($metric, $keys_file, $response_file);
+
+   # Scores one file
+   &CorScorer::Score($metric, $keys_file, $response_file, $name);
+
+
+INPUT
+   metric: the metric desired to score the results:
+     muc: MUCScorer (Vilain et al, 1995)
+     bcub: B-Cubed (Bagga and Baldwin, 1998)
+     ceafm: CEAF (Luo et al, 2005) using mention-based similarity
+     ceafe: CEAF (Luo et al, 2005) using entity-based similarity
+     all: uses all the metrics to score
+
+   keys_file: file with expected coreference chains in SemEval format
+
+   response_file: file with output of coreference system (SemEval format)
+
+   name: [optional] the name of the document to score. If name is not
+     given, all the documents in the dataset will be scored. If given
+     name is "none" then all the documents are scored but only total
+     results are shown.
+
+
+OUTPUT
+   The score subroutine returns an array with four values in this order:
+   1) Recall numerator
+   2) Recall denominator
+   3) Precision numerator
+   4) Precision denominator
+
+   Also recall, precision and F1 are printed in the standard output when variable
+   $VERBOSE is not null.
+
+   Final scores:
+   Recall = recall_numerator / recall_denominator
+   Precision = precision_numerator / precision_denominator
+   F1 = 2 * Recall * Precision / (Recall + Precision)
+
+   Identification of mentions
+   An scorer for identification of mentions (recall, precision and F1) is also included.
+   Mentions from system response are compared with key mentions. There are two kind of
+   positive matching response mentions:
+
+   a) Strictly correct identified mentions: Tokens included in response mention are exactly
+   the same tokens included in key mention.
+
+   b) Partially correct identified mentions: Response mention tokens include the head token
+   of the key mention and no new tokens are added (i.e. the key mention bounds are not 
+   overcome).
+
+
+   The partially correct mentions can be given some credit (for
+   example, a weight of 0.5) to get a combined score as follows:
+
+   Recall = (a + 0.5 * b) / #key mentions
+   Precision = (a + 0.5 * b) / #response mentions
+   F1 = 2 * Recall * Precision / (Recall + Precision)
+
+   For the official CoNLL evaluation, however, we will only consider
+   mentions with exact boundaries as being correct.
+
+SEE ALSO
+
+1. http://stel.ub.edu/semeval2010-coref/
+
+2. Marta Recasens, Lluís Màrquez, Emili Sapena, M. Antònia Martí, Mariona Taulé,
+   Véronique Hoste, Massimo Poesio, and Yannick Versley. 2010. SemEval-2010 Task 1:
+   Coreference Resolution in Multiple Languages. In Proceedings of the ACL International
+   Workshop on Semantic Evaluation (SemEval-2010), pp. 1-8, Uppsala, Sweden.
+
+
+AUTHOR
+   Emili Sapena, Universitat Politècnica de Catalunya
+   http://www.lsi.upc.edu/~esapena
+   esapena <at> lsi.upc.edu
+
+
+COPYRIGHT AND LICENSE
+   Copyright (C) 2009-2011, Emili Sapena esapena <at> lsi.upc.edu
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2 of the License, or (at your
+   option) any later version. This program is distributed in the hope that
+   it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+   warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+  Modified in 2013 for v1.07 by Sebastian Martschat,
+    sebastian.martschat <at> h-its.org