Getting Started
From WebLichtWiki
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Revision as of 12:24, 3 April 2012
Contents |
Quick Start - Introduction
WebLicht is a service orchestration and execution environment for incremental automatic annotation of text corpora, built upon Service Oriented Architecture principles. Its main components are:
- A set of distributed services for data processing
- A repository containing metadata about the services
- A web application that offers a user-friendly graphical interface for building chains of services and executing them
WebLicht's services are hosted on servers distributed throughout Europe, which allows full control of a tool by its developer. Each tool within WebLicht is registered in a repository containing information about its input requirements and its output, among other things. This information is necessary to determine which tools can be added to the processing chain at any given point while building a chain because each tool in a processing chain uses the output of the previous tool in the chain as its input. Only those tools which are able to work with the data are available as choices for adding to a chain.
The main focus of this Quick Start Guide is on WebLicht's web application and how it can be used to linguistically annotate text and subsequently to visualize the annotations.
Creating a Processing Chain
We will create and run a very simple tool chain to annotate a text with tokens and part of speech tags. Once the input text has been specified, we can start adding annotation tools to our processing chain.
Start by specifying the input:
Create a new text input:
- Choose File, then New from the main menu, then select the type of data you would like to enter. A window will then appear where the input can be entered. A title should also be given to the input data, for later reference. If applicable, further specification of the input data (such as its language), can be given.
Use one of the sample files provided:
Choose File, then Open Sample from the main menu, then select the input that you would like to use. The contents of the file will be displayed in the Preview area, and any chains that are associated with the selected input will be displayed.
Upload a file from your computer:
Choose File, then Upload from the main menu, then select the type of data you would like to upload. The contents of the file will be displayed in the Preview area if possible. Please note that text files should be in UTF-8 format.
Open a previously used input:
Choose File, then Open Recent from the main menu, then select the input that you would like to use. The contents of the file will be displayed in the Preview area if possible, and any chains that are associated with the selected input will be displayed.
