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XLFG version 9.9.3

Author: Lionel Clément -- University Bordeaux -- LaBRI

XLFG is a fast, accurate deep parser for LFG grammar. These outputs are phrase structures, predicate-argument structures and predicate-thematic relationships.

The typical XLFG applications are

  • Syntax courses
  • Research and education in Linguistics
  • Research and education in Computational Linguistics
  • Computational Linguistics projects
Lionel Clément - XLFG Copyright 2014-2021 LaBRI, CNRS (UMR 5800), the University of Bordeaux, and the Bordeaux INP

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Terms and conditions of use of the site XLFG

XLFG has been designed to allow the sharing of grammars between multiple users (students, teachers, lecturers, researchers, etc.). Nevertheless, it is not designed to backup data. We are not responsible for any loss of work. To make sure work and data is properly saved, a variety of alternative methods are readily available.

XLFG is often used for exams and tutorials. While we endeavor to do the utmost to prevent server interruptions, we disavow any liability for problems resulting from the use of this web site during exams or tutorial sessions.

XLFG has been designed with the field of linguistics in mind. The comments and opinions on the sentences are those of the author alone and do not necessarily reflect those of the XLFG operator.

We reserve the right to terminate any account and remove all contents associated with it at any moment.

Lionel Clément - XLFG Copyright 2014-2021 LaBRI, CNRS (UMR 5800), the University of Bordeaux, and the Bordeaux INP

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Last Updates

  • 9.9.3 (january 2021)
    • Bug fixed on local equations.
  • 9.9.2 (january 2021)
    • Remove a user member or remove a project assignment from a workshop do not longer remove the associated project versions.
    • It is no longer allowed to remove a project when there are still versions of this project.
  • 9.9.1 (january 2021)
    • Allow multiple pointers to the same FS (to be improved)
    • Strip whitespace from the beginning and end of a sentence.
    • Unification before pointing an FS (bug fixed).
  • 9.9.0 (january 2021)
    • Sentences -> Test suite.
    • Parse just one sentence available.
    • Check a word available.
  • 9.8.11 (december 2020)
    • Bugs fixed in Compact/Uncompact F-Structures data.
    • The deprecated Projects>Save version submenu non longer exists.
    • Changing Compact Feature-Structures: No to Uncompact Feature-Structures Yes.
    • Error message telling the user that a sentence cannot be parsed because it contains a word that is not in the lexicon.
  • 9.8.10
    • Bugs fixed
      • In $i terms (back-end)
      • In coloration of sentences (front-end)
    • (↑ X) = (↑ Y) equation:
      • If left-hand side (lhs) refers to anonymous variable, creates a pointer lhs => rhs
      • If both lhs and rhs refer to an FS
        1. Unifies
        2. Creates a pointer lhs => rhs
  • 9.8.9
    • A bug fixed on constraining equations
    • More explicit Internal error messages
  • 9.8.8
    • Various IHM improvements
      • Spelling mistakes and typos
      • Web browsing: you can refresh the page and come back to some of the browsing history
      • Input sentences
        • Coloration
        • Drap and drop to sort sentences
      • Modifications on permissions on the project header
        • Using the original version on hidden mode
        • Using either the original or the copied version on read-only mode
        • A button "Set default grants" was added int the project header
      • Zoom on Argument structure
      • Macro descriptions with '@' sign usable as features values, not only as a feature.

        Example of usage:

        @P: TENSE:present;
        @p: NUMBER:pl;
        @s: NUMBER:sg;
        @_3: PERS:3;
        @_12: PERS:1|2;
        @_3s: @_3, @s;
        @_3p: @_3, @p;
        @_no3s: [@_12] | [@_3p];
        bark verb [PRED:'to_bark', @P, SUBJ:@_no3s];
        barks verb [PRED:'to_bark', @P, SUBJ:@_3s];

Lionel Clément - XLFG Copyright 2014-2021 LaBRI, CNRS (UMR 5800), the University of Bordeaux, and the Bordeaux INP
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  • Projects 
    • New project
    •  Import a version
    •  Export this version
    • Your projects
    • Your versions of existing projects
    • All projects
  • Users 
    • Members of your workshops
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  • Workshops 
    • New workshop
    • Your workshops
    • Your contribution to workshops
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  • Tools 
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  • Help 
    • About XLFG
    • Terms and conditions of use of the site XLFG
    • Last updates
    • XLFG Documentation
    • How to list
    • Send a email to XLFG Administrators
    • The obsolete version of XLFG
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Lionel Clément - XLFG Copyright 2014-2021 LaBRI, CNRS (UMR 5800), the University of Bordeaux, and the Bordeaux INP

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Privacy

Here at XLFG, we value your privacy.

In order to run optimally, the site records and saves the cookies from each log-in session.

Your personal information, including your name and e-mail, are not shared with other members of the community without your approbation, but are saved on the server.

The XLFG grammar and lexicon are shared at your discretion.

To best update and manage the software, we record and save the XLFG grammar, lexicon, and sample sentences.


Warning

The XLFG administrator does not provide data safety.

It's wise to save your projects and versions by exporting it on your personal device.