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1                      GNU GENERAL PUBLIC LICENSE  (******************************************************************
2                         Version 2, June 1991    [LibML - Machine Learning Library]
3      http://libml.org
4      Copyright (C) 2002 - 2003  LAGACHERIE Matthieu RICORDEAU Olivier
5      
6      This program is free software; you can redistribute it and/or
7      modify it under the terms of the GNU General Public License
8      as published by the Free Software Foundation; either version 2
9      of the License, or (at your option) any later version. This
10      program is distributed in the hope that it will be useful,
11      but WITHOUT ANY WARRANTY; without even the implied warranty of
12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13      GNU General Public License for more details. You should have
14      received a copy of the GNU General Public License
15      along with this program; if not, write to the Free Software
16      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
17      USA.
18      
19      SPECIAL NOTE (the beerware clause):
20      This software is free software. However, it also falls under the beerware
21      special category. That is, if you find this software useful, or use it
22      every day, or want to grant us for our modest contribution to the
23      free software community, feel free to send us a beer from one of
24      your local brewery. Our preference goes to Belgium abbey beers and
25      irish stout (Guiness for strength!), but we like to try new stuffs.
26    
27      Authors:
28      Matthieu LAGACHERIE
29      E-mail : matthieu@libml.org
30      
31      Olivier RICORDEAU
32      E-mail : olivier@libml.org
33    
34   Copyright (C) 1989, 1991 Free Software Foundation, Inc.   ****************************************************************)
                        59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  
  Everyone is permitted to copy and distribute verbatim copies  
  of this license document, but changing it is not allowed.  
   
                             Preamble  
   
   The licenses for most software are designed to take away your  
 freedom to share and change it.  By contrast, the GNU General Public  
 License is intended to guarantee your freedom to share and change free  
 software--to make sure the software is free for all its users.  This  
 General Public License applies to most of the Free Software  
 Foundation's software and to any other program whose authors commit to  
 using it.  (Some other Free Software Foundation software is covered by  
 the GNU Library General Public License instead.)  You can apply it to  
 your programs, too.  
   
   When we speak of free software, we are referring to freedom, not  
 price.  Our General Public Licenses are designed to make sure that you  
 have the freedom to distribute copies of free software (and charge for  
 this service if you wish), that you receive source code or can get it  
 if you want it, that you can change the software or use pieces of it  
 in new free programs; and that you know you can do these things.  
   
   To protect your rights, we need to make restrictions that forbid  
 anyone to deny you these rights or to ask you to surrender the rights.  
 These restrictions translate to certain responsibilities for you if you  
 distribute copies of the software, or if you modify it.  
   
   For example, if you distribute copies of such a program, whether  
 gratis or for a fee, you must give the recipients all the rights that  
 you have.  You must make sure that they, too, receive or can get the  
 source code.  And you must show them these terms so they know their  
 rights.  
   
   We protect your rights with two steps: (1) copyright the software, and  
 (2) offer you this license which gives you legal permission to copy,  
 distribute and/or modify the software.  
   
   Also, for each author's protection and ours, we want to make certain  
 that everyone understands that there is no warranty for this free  
 software.  If the software is modified by someone else and passed on, we  
 want its recipients to know that what they have is not the original, so  
 that any problems introduced by others will not reflect on the original  
 authors' reputations.  
   
   Finally, any free program is threatened constantly by software  
 patents.  We wish to avoid the danger that redistributors of a free  
 program will individually obtain patent licenses, in effect making the  
 program proprietary.  To prevent this, we have made it clear that any  
 patent must be licensed for everyone's free use or not licensed at all.  
   
   The precise terms and conditions for copying, distribution and  
 modification follow.  
   
                     GNU GENERAL PUBLIC LICENSE  
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION  
   
   0. This License applies to any program or other work which contains  
 a notice placed by the copyright holder saying it may be distributed  
 under the terms of this General Public License.  The "Program", below,  
 refers to any such program or work, and a "work based on the Program"  
 means either the Program or any derivative work under copyright law:  
 that is to say, a work containing the Program or a portion of it,  
 either verbatim or with modifications and/or translated into another  
 language.  (Hereinafter, translation is included without limitation in  
 the term "modification".)  Each licensee is addressed as "you".  
   
 Activities other than copying, distribution and modification are not  
 covered by this License; they are outside its scope.  The act of  
 running the Program is not restricted, and the output from the Program  
 is covered only if its contents constitute a work based on the  
 Program (independent of having been made by running the Program).  
 Whether that is true depends on what the Program does.  
   
   1. You may copy and distribute verbatim copies of the Program's  
 source code as you receive it, in any medium, provided that you  
 conspicuously and appropriately publish on each copy an appropriate  
 copyright notice and disclaimer of warranty; keep intact all the  
 notices that refer to this License and to the absence of any warranty;  
 and give any other recipients of the Program a copy of this License  
 along with the Program.  
   
 You may charge a fee for the physical act of transferring a copy, and  
 you may at your option offer warranty protection in exchange for a fee.  
   
   2. You may modify your copy or copies of the Program or any portion  
 of it, thus forming a work based on the Program, and copy and  
 distribute such modifications or work under the terms of Section 1  
 above, provided that you also meet all of these conditions:  
   
     a) You must cause the modified files to carry prominent notices  
     stating that you changed the files and the date of any change.  
   
     b) You must cause any work that you distribute or publish, that in  
     whole or in part contains or is derived from the Program or any  
     part thereof, to be licensed as a whole at no charge to all third  
     parties under the terms of this License.  
   
     c) If the modified program normally reads commands interactively  
     when run, you must cause it, when started running for such  
     interactive use in the most ordinary way, to print or display an  
     announcement including an appropriate copyright notice and a  
     notice that there is no warranty (or else, saying that you provide  
     a warranty) and that users may redistribute the program under  
     these conditions, and telling the user how to view a copy of this  
     License.  (Exception: if the Program itself is interactive but  
     does not normally print such an announcement, your work based on  
     the Program is not required to print an announcement.)  
   
 These requirements apply to the modified work as a whole.  If  
 identifiable sections of that work are not derived from the Program,  
 and can be reasonably considered independent and separate works in  
 themselves, then this License, and its terms, do not apply to those  
 sections when you distribute them as separate works.  But when you  
 distribute the same sections as part of a whole which is a work based  
 on the Program, the distribution of the whole must be on the terms of  
 this License, whose permissions for other licensees extend to the  
 entire whole, and thus to each and every part regardless of who wrote it.  
   
 Thus, it is not the intent of this section to claim rights or contest  
 your rights to work written entirely by you; rather, the intent is to  
 exercise the right to control the distribution of derivative or  
 collective works based on the Program.  
   
 In addition, mere aggregation of another work not based on the Program  
 with the Program (or with a work based on the Program) on a volume of  
 a storage or distribution medium does not bring the other work under  
 the scope of this License.  
   
   3. You may copy and distribute the Program (or a work based on it,  
 under Section 2) in object code or executable form under the terms of  
 Sections 1 and 2 above provided that you also do one of the following:  
   
     a) Accompany it with the complete corresponding machine-readable  
     source code, which must be distributed under the terms of Sections  
     1 and 2 above on a medium customarily used for software interchange; or,  
   
     b) Accompany it with a written offer, valid for at least three  
     years, to give any third party, for a charge no more than your  
     cost of physically performing source distribution, a complete  
     machine-readable copy of the corresponding source code, to be  
     distributed under the terms of Sections 1 and 2 above on a medium  
     customarily used for software interchange; or,  
   
     c) Accompany it with the information you received as to the offer  
     to distribute corresponding source code.  (This alternative is  
     allowed only for noncommercial distribution and only if you  
     received the program in object code or executable form with such  
     an offer, in accord with Subsection b above.)  
   
 The source code for a work means the preferred form of the work for  
 making modifications to it.  For an executable work, complete source  
 code means all the source code for all modules it contains, plus any  
 associated interface definition files, plus the scripts used to  
 control compilation and installation of the executable.  However, as a  
 special exception, the source code distributed need not include  
 anything that is normally distributed (in either source or binary  
 form) with the major components (compiler, kernel, and so on) of the  
 operating system on which the executable runs, unless that component  
 itself accompanies the executable.  
   
 If distribution of executable or object code is made by offering  
 access to copy from a designated place, then offering equivalent  
 access to copy the source code from the same place counts as  
 distribution of the source code, even though third parties are not  
 compelled to copy the source along with the object code.  
   
   4. You may not copy, modify, sublicense, or distribute the Program  
 except as expressly provided under this License.  Any attempt  
 otherwise to copy, modify, sublicense or distribute the Program is  
 void, and will automatically terminate your rights under this License.  
 However, parties who have received copies, or rights, from you under  
 this License will not have their licenses terminated so long as such  
 parties remain in full compliance.  
   
   5. You are not required to accept this License, since you have not  
 signed it.  However, nothing else grants you permission to modify or  
 distribute the Program or its derivative works.  These actions are  
 prohibited by law if you do not accept this License.  Therefore, by  
 modifying or distributing the Program (or any work based on the  
 Program), you indicate your acceptance of this License to do so, and  
 all its terms and conditions for copying, distributing or modifying  
 the Program or works based on it.  
   
   6. Each time you redistribute the Program (or any work based on the  
 Program), the recipient automatically receives a license from the  
 original licensor to copy, distribute or modify the Program subject to  
 these terms and conditions.  You may not impose any further  
 restrictions on the recipients' exercise of the rights granted herein.  
 You are not responsible for enforcing compliance by third parties to  
 this License.  
   
   7. If, as a consequence of a court judgment or allegation of patent  
 infringement or for any other reason (not limited to patent issues),  
 conditions are imposed on you (whether by court order, agreement or  
 otherwise) that contradict the conditions of this License, they do not  
 excuse you from the conditions of this License.  If you cannot  
 distribute so as to satisfy simultaneously your obligations under this  
 License and any other pertinent obligations, then as a consequence you  
 may not distribute the Program at all.  For example, if a patent  
 license would not permit royalty-free redistribution of the Program by  
 all those who receive copies directly or indirectly through you, then  
 the only way you could satisfy both it and this License would be to  
 refrain entirely from distribution of the Program.  
   
 If any portion of this section is held invalid or unenforceable under  
 any particular circumstance, the balance of the section is intended to  
 apply and the section as a whole is intended to apply in other  
 circumstances.  
   
 It is not the purpose of this section to induce you to infringe any  
 patents or other property right claims or to contest validity of any  
 such claims; this section has the sole purpose of protecting the  
 integrity of the free software distribution system, which is  
 implemented by public license practices.  Many people have made  
 generous contributions to the wide range of software distributed  
 through that system in reliance on consistent application of that  
 system; it is up to the author/donor to decide if he or she is willing  
 to distribute software through any other system and a licensee cannot  
 impose that choice.  
   
 This section is intended to make thoroughly clear what is believed to  
 be a consequence of the rest of this License.  
   
   8. If the distribution and/or use of the Program is restricted in  
 certain countries either by patents or by copyrighted interfaces, the  
 original copyright holder who places the Program under this License  
 may add an explicit geographical distribution limitation excluding  
 those countries, so that distribution is permitted only in or among  
 countries not thus excluded.  In such case, this License incorporates  
 the limitation as if written in the body of this License.  
   
   9. The Free Software Foundation may publish revised and/or new versions  
 of the General Public License from time to time.  Such new versions will  
 be similar in spirit to the present version, but may differ in detail to  
 address new problems or concerns.  
   
 Each version is given a distinguishing version number.  If the Program  
 specifies a version number of this License which applies to it and "any  
 later version", you have the option of following the terms and conditions  
 either of that version or of any later version published by the Free  
 Software Foundation.  If the Program does not specify a version number of  
 this License, you may choose any version ever published by the Free Software  
 Foundation.  
   
   10. If you wish to incorporate parts of the Program into other free  
 programs whose distribution conditions are different, write to the author  
 to ask for permission.  For software which is copyrighted by the Free  
 Software Foundation, write to the Free Software Foundation; we sometimes  
 make exceptions for this.  Our decision will be guided by the two goals  
 of preserving the free status of all derivatives of our free software and  
 of promoting the sharing and reuse of software generally.  
   
                             NO WARRANTY  
   
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY  
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN  
 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES  
 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED  
 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF  
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS  
 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE  
 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,  
 REPAIR OR CORRECTION.  
   
   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING  
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR  
 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,  
 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING  
 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED  
 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY  
 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER  
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE  
 POSSIBILITY OF SUCH DAMAGES.  
   
                      END OF TERMS AND CONDITIONS  
   
             How to Apply These Terms to Your New Programs  
   
   If you develop a new program, and you want it to be of the greatest  
 possible use to the public, the best way to achieve this is to make it  
 free software which everyone can redistribute and change under these terms.  
   
   To do so, attach the following notices to the program.  It is safest  
 to attach them to the start of each source file to most effectively  
 convey the exclusion of warranty; and each file should have at least  
 the "copyright" line and a pointer to where the full notice is found.  
   
     <one line to give the program's name and a brief idea of what it does.>  
     Copyright (C) <year>  <name of author>  
   
     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  
   
   
 Also add information on how to contact you by electronic and paper mail.  
   
 If the program is interactive, make it output a short notice like this  
 when it starts in an interactive mode:  
   
     Gnomovision version 69, Copyright (C) year name of author  
     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.  
     This is free software, and you are welcome to redistribute it  
     under certain conditions; type `show c' for details.  
   
 The hypothetical commands `show w' and `show c' should show the appropriate  
 parts of the General Public License.  Of course, the commands you use may  
 be called something other than `show w' and `show c'; they could even be  
 mouse-clicks or menu items--whatever suits your program.  
   
 You should also get your employer (if you work as a programmer) or your  
 school, if any, to sign a "copyright disclaimer" for the program, if  
 necessary.  Here is a sample; alter the names:  
   
   Yoyodyne, Inc., hereby disclaims all copyright interest in the program  
   `Gnomovision' (which makes passes at compilers) written by James Hacker.  
   
   <signature of Ty Coon>, 1 April 1989  
   Ty Coon, President of Vice  
   
 This General Public License does not permit incorporating your program into  
 proprietary programs.  If your program is a subroutine library, you may  
 consider it more useful to permit linking proprietary applications with the  
 library.  If this is what you want to do, use the GNU Library General  
 Public License instead of this License.  

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