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A Treebank-based Investigation of IPP-triggering Verbs in Dutch

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An <strong>in</strong>tegrated web-<strong>based</strong> treebank annotation<br />

system<br />

Victoria Rosén, ∗§ Paul Meurer, § Gyri Smørdal Losnegaard, ∗<br />

Gunn Inger Lyse, ∗ Koenraad De Smedt, ∗<br />

Martha Thunes ∗ and Helge Dyvik ∗§<br />

University <strong>of</strong> Bergen ∗ and Uni Research §<br />

Bergen, Norway<br />

E-mail: victoria@uib.no,paul.meurer@uni.no<br />

Abstract<br />

In recent years a development towards easier access to treebanks has been<br />

discernible. Fully onl<strong>in</strong>e environments for the creation, annotation and exploration<br />

<strong>of</strong> treebanks have however been very scarce so far. In this paper we<br />

describe some user needs from the annotator perspective and report on our experience<br />

with the development and practical use <strong>of</strong> a web-<strong>based</strong> annotation<br />

system.<br />

1 Introduction<br />

In the context <strong>of</strong> earlier semi-automated annotation projects, various annotation<br />

tools and <strong>in</strong>terfaces have been created and deployed. User <strong>in</strong>terfaces for efficient<br />

parse selection are described <strong>in</strong> the context <strong>of</strong> Alp<strong>in</strong>o [23] and L<strong>in</strong>go Redwoods<br />

[15], <strong>in</strong>spired by the TreeBanker [7]. Annotation tools for the Paris 7 French treebank<br />

were created as extensions <strong>of</strong> the Emacs editor and provide annotators with<br />

<strong>in</strong>teractive edit<strong>in</strong>g as well as visualization <strong>of</strong> trees [1]. Several graphical tree editors<br />

and viewers have been developed, such as the type check<strong>in</strong>g dependency tree editor<br />

TrEd, used for the Prague Dependency <strong>Treebank</strong> (PDT) [6, 11], the Annotate tool,<br />

used <strong>in</strong> Negra and Tiger [2, 3], and SALTO, which was developed for SALSA [5];<br />

the latter supports resolution <strong>of</strong> <strong>in</strong>ter-annotator disagreements. These tools require<br />

<strong>in</strong>stallation <strong>of</strong> applications on the client side which may be platform specific.<br />

New developments are oriented towards web-<strong>based</strong> <strong>in</strong>teraction. The Alp<strong>in</strong>o<br />

treebank [23] is browsable on the web with visualizations <strong>in</strong> SVG (Scalable Vector<br />

Graphics), but does not seem to <strong>of</strong>fer further onl<strong>in</strong>e functionality. The brat annotation<br />

system [22] is a web-<strong>based</strong> tool for text annotation which <strong>of</strong>fers a user-friendly<br />

web <strong>in</strong>terface for manual annotation and is very suitable for collaborative edit<strong>in</strong>g.

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