Update COPYING notice to further clarify our conventions regarding copyright...

Update COPYING notice to further clarify our conventions regarding copyright and multiple authors; update Apache headers to point to COPYING notice.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@2988 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8

COPYING

 
- Update to legal notice, made Feb. 2012.  We would like to clarify that we
- are using a convention where multiple names in the Apache copyright headers, 
- for example
+ Update to legal notice, made Feb 2012, modified Sep 2013.  We would like to
+ clarify that we are using a convention where multiple names in the Apache
+ copyright headers, for example
 
   // Copyright 2009-2012  Yanmin Qian  Arnab Ghoshal
+  //                2013  Vassil Panayotov
 
- does not necessarily signify joint ownership of copyright of that file, except
- in cases where all those names were present in the original release made in
- March 2011-- you can use the version history to work this out, if this matters
- to you.  Instead, we intend that those contributors who later modified the file, 
- agree to release their changes under the Apache license, but do not claim to 
- jointly own the copyright of the original material (which would require an agreement 
- with the original contributors).  The conventional way of signifying 
- this is to duplicate the Apache headers at the top of each file each time
- a change is made by a different author, but this would quickly become impractical.
+ does not signify joint ownership of copyright of that file, except in cases
+ where all those names were present in the original release made in March 2011--
+ you can use the version history to work this out, if this matters to you.
+ Instead, we intend that those contributors who later modified the file, agree
+ to release their changes under the Apache license.  The conventional way of
+ signifying this is to duplicate the Apache headers at the top of each file each
+ time a change is made by a different author, but this would quickly become
+ impractical.
+
+ Where the copyright header says something like:
+
+ // Copyright    2013   Johns Hopkins University (author: Daniel Povey)
+
+ it is because the individual who wrote the code was at that institution as an
+ employee, so the copyright is owned by the university (we have checked that the
+ contributions were in accordance with the open-source policies of the
+ institutions concerned, including getting them vetted individually where
+ necessary).  In some cases, however, particularly early on, we just wrote the
+ name of the university or company concerned, without the actual author's name
+ in parentheses.  If you see something like
+
+ //  Copyright  2009-2012   Arnab Ghoshal  Microsoft Corporation
+
+ it does not imply that Arnab was working for Microsoft, it is because someone
+ else contributed to the file while working at Microsoft (this would be Daniel
+ Povey, in fact, who was working at Microsoft Research at the outset of the
+ project).  If the actual author's name in parentheses, it is just to clarify
+ who wrote the code; it is not supposed to signify ownership of the copyright by
+ that individual.
+
+ The list of authors of each file is in an essentially arbitrary order, but is
+ often chronological if they contributed in different years.
 
  The original legal notice is below.  Note: we are continuing to modify it by
- adding the names of new contributors.
+ adding the names of new contributors, but at any given time, the list may
+ be out of date.
 
 ---
                           Legal Notices

src/base/io-funcs-inl.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation;  Saarland University;
 //                      Jan Silovsky;   Yanmin Qian;  Johns Hopkins University (Author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/io-funcs-test.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/io-funcs.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation;  Saarland University
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/io-funcs.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation;  Saarland University;
 //                      Jan Silovsky;   Yanmin Qian
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-common.h

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011 Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-error-test.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-error.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation;  Lukas Burget;  Ondrej Glembek
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-error.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation;  Ondrej Glembek;  Lukas Burget;
 //                      Saarland University
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-math-test.cc

 // base/kaldi-math-test.cc
 // Copyright 2009-2011  Microsoft Corporation;  Yanmin Qian;  Jan Silovsky
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-math.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation;  Yanmin Qian;
 //                      Saarland University;  Jan Silovsky
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-math.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Ondrej Glembek;  Microsoft Corporation;  Yanmin Qian;
 //                      Jan Silovsky;  Saarland University
 //
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-types.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation;  Saarland University;
 //                      Jan Silovsky;  Yanmin Qian
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-utils.cc

 // base/kaldi-utils.cc
 // Copyright 2009-2011   Karel Vesely;  Yanmin Qian;  Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/base/kaldi-utils.h

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Ondrej Glembek;  Microsoft Corporation;
 //                      Saarland University;  Karel Vesely;  Yanmin Qian
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/acc-lda.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation, Go-Vivace Inc.
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/acc-tree-stats.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2011  Microsoft Corporation, GoVivace Inc.
 //                2013  Johns Hopkins University (author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/add-self-loops.cc

 // bin/add-self-loops.cc
 // Copyright 2009-2011 Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/ali-to-pdf.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/ali-to-phones.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2011  Microsoft Corporation
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/ali-to-post.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2012  Microsoft Corporation, Go-Vivace Inc.,
 //                      Johns Hopkins University (author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/align-compiled-mapped.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2009-2012  Microsoft Corporation, Karel Vesely
 //
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/align-equal-compiled.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2013  Microsoft Corporation
 //                      Johns Hopkins University (Author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/align-equal.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2013  Microsoft Corporation
 //                      Johns Hopkins University (Author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/align-mapped.cc

@@ -3,6 +3,8 @@
 // Copyright 2009-2012  Microsoft Corporation, Karel Vesely
 //                2013  Johns Hopkins University (author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/analyze-counts.cc

@@ -2,6 +2,8 @@
 
 // Copyright 2012 Karel Vesely (Brno University of Technology)
 
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/arpa2fst.cc

@@ -2,6 +2,8 @@
 //
 // Copyright 2009-2011  Gilles Boulianne.
 //
+// See ../../COPYING for clarification regarding multiple authors
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at

src/bin/build-pfile-from-ali.cc

@@ -3,6 +3,8 @@
 // Copyright 2013  Carnegie Mellon University (Author: Yajie Miao)
 //                 Johns Hopkins University (Author: Daniel Povey)
 
+// See ../../COPYING for clarification regarding multiple authors