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In order to obtain a copy of SentiWordNet you must fill out the form below and agree with the license terms described in the text that follows. We will contact you as soon as possible and send you your copy of SentiWordNet. (Note: we will send you the SentiWordNet data by email, it consists in a 1.5 MB tgz archive, please check that your mailbox can receive such kind of attachment.)

This license allows you to use SentiWordNet only for research, non-profit purposes. Any institution, be it academic or non-academic, is allowed to use SentiWordNet for any non-profit research project. It is important for us to have feedback on research projects involving SentiWordNet: we kindly ask you to provide us with references to published papers where the use of SentiWordNet is discussed, and to give us comments and feedback.

Publications or presentations containing research results obtained through the use of SentiWordNet should cite the following reference:

For all projects of a commercial nature, an application should be made for a commercial license for evaluation purposes, internal use, or re-selling. For more information, please contact Fabrizio Sebastiani ( fabrizio . sebastiani @ isti . cnr . it).

The current version of SentiWordNet is 1.0.

You can obtain a research license by filling the following online form. Please give us clear evidence about your affiliation (for instance the e-mail account or home-page). If you are an undergraduate or master student the license should be submitted by a professor of your University.
See above for commercial licenses.

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Note: we use the email domain as the first criterium for determining if the request comes from an academic source (entitled to use SentiWordNet for free for research purposes), or not. Any request from generic email addresses (e.g. gmail, hotmail, yahoo, 126.com) are likely to be rejected.

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Please read and accept the following agreement terms (by clicking the accept button at the end of the agreement):

Agreement terms:

LICENSE AGREEMENT

Istituto di Scienza e Tecnologie dell'Informazione - Consiglio Nazionale delle Ricerche (ISTI-CNR)

SentiWordNet (Database)

  • 1) Grant:
    The Istituto di Scienza e Tecnologie dell'Informazione - Consiglio Nazionale delle Ricerche (ISTI-CNR) hereby grants you a non-exclusive, non-transferable, perpetual, royalty-free and worldwide license (the "License") to use the SentiWordNet data file (the "Database") solely for educational and research purposes, in accordance with Paragraph 2 below and subject to the terms and conditions of this License Agreement (the "Agreement").

  • 2) Limitations on Use:
    The License is limited to non-commercial use. Non-commercial use relates only to educational and research purposes. Any other use is commercial use. You may not use the Database in connection with any business activities. You may distribute and/or allow others to use a) the Database or b) the applications you create with the Database only if each new user is bound by the provisions of this Agreement.

  • 3) Copies:
    You may copy ISTI-CNR material only as reasonably necessary for your licensed use.

  • 4) Ownership:
    The Database and the accompanying documentation are licensed, not sold, to you. The Database is a proprietary product of ISTI-CNR. ISTI-CNR retains all rights not specifically granted to you hereunder, including ownership of the Database and all copyrights, trade secrets, or other intellectual property rights in the Database and any accompanying information.

  • 5) Publication Credit:
    You agree to acknowledge ISTI-CNR by citing the following publication in any publication or presentation containing research results obtained in whole or in part through the use of the Database:

      Andrea Esuli and Fabrizio Sebastiani. SentiWordNet: A Publicly Available Lexical Resource for Opinion Mining. In Proceedings of LREC-06, 5th Conference on Language Resources and Evaluation, Genova, IT, 2006, pp. 417-422.

  • 6) Term of License:
    The License is effective upon receipt by you of the Database and shall continue until terminated. The License will terminate immediately without notice by ISTI-CNR if you fail to comply with the terms and conditions of this Agreement. Upon termination of this License, you shall immediately discontinue all use of the Database provided hereunder, and return to ISTI-CNR or destroy the original and all copies of all such Database. All of your obligations under this Agreement shall survive the termination of the License.

  • 7) Warranty:
    ISTI-CNR MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY, USE, OR PERFORMANCE OF THIS DATABASE OR ABOUT ANY CONTENT OR INFORMATION MADE ACCESSIBLE BY THE DATABASE, FOR ANY PURPOSE. THE DATABASE IS PROVIDED "AS IS," WITHOUT EXPRESS OR IMPLIED WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NONINFRINGEMENT WITH RESPECT TO THE DATABASE. ISTI-CNR IS NOT OBLIGED TO SUPPORT OR ISSUE UPDATES TO THE DATABASE.

  • 8) Limitation on Liability:
    This Database is provided free of charge and, accordingly, ISTI-CNR shall not be liable under any theory for any damages suffered by you or any user of the Database. UNDER NO CIRCUMSTANCES SHALL ISTI-CNR BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER ECONOMIC LOSS OR COMMERCIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS DATABASE, EVEN IF ISTI-CNR SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY THIRD-PARTY CLAIMS.

  • 9) Indemnification:
    You agree to hold harmless, indemnify, and defend ISTI-CNR, its Trustees, officers, employees, and agents from and against any loss, damage, liability, claim of loss, lawsuit, cause of action, or other claim asserted against them or any of them arising out of, or in any way connected with, your performance of any activity hereunder.

  • 10) Export Controls:
    You agree that the Database will not be shipped, transferred, or exported into any country or used in any manner prohibited by the Italian export laws, restrictions, or regulations.

  • 11) Disputes/Arbitration:
    This Agreement shall be governed under the laws of Italy. Any dispute between the parties arising out of or relating to this Agreement will be submitted to binding arbitration in Roma (Italy), pursuant to the Commercial Arbitration Rules of the Italian Arbitration Association, and judgment on the award may be entered in any court of competent jurisdiction; provided, however, that either party may seek preliminary injunctive or other equitable relief pending arbitration to prevent irreparable harm. The prevailing party in any arbitration or litigation shall be entitled to recover all reasonable expenses thereof, including attorney's fees in connection with such proceedings or any appeal thereof.

  • 12) Entire Agreement:
    This Agreement contains the entire agreement between the parties with respect to the subject matter hereof, and it shall not be modified or amended except by an instrument in writing signed by both parties hereto.


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