The Helenos Project
KDD Workbench for the Semantic Web

Setting up Helenos

Mysql

Helenos needs a Mysql server to connect to. Since there will be a lot of queries to this server, it is best to install a Mysql server on your computer. Please install Mysql 4.1 or higher.

To run Helenos you need a user which has all data and structure privileges. You need a database, which Helenos can use to first connect to the server and store the basic settings. Make also sure that you have both the myisam and innodb table types available.

After the default installation, add or edit the following line in the Mysql configuration file ("my.ini" on Windows):

max_allowed_packet=16M

This will allow you to insert large files into the database. The default value is only 1M.

Settings

After starting the Mysql server, execute the helenos.bat file on Windows to start Helenos. Basically, Helenos is a client, which connects to a database server and stores all required data for its KDD process in the database. Open the "Client -> Settings" and costumize your settings.

DATABASE_CONNECTION/MYSQL

Setting Meaning
HOST The host of your Mysql server.
DATABASE The basic Helenos database.
USER The Mysql user you have configured for Helenos.
PASSWORD The password of your Mysql user.

PROPERTIES/LOGGING

Specify, which logging level apache log4j should use.

PROXY

Setting Meaning
PROXY Activate this setting by double-clicking, if you are behind a proxy.
PROXY/HOST The address of your proxy.
PROXY/PORT The port of your proxy.

After adjusting the client settings, close the panel and you are ready to go. Connect to the Mysql server by clicking "Client -> Connect". The project manager will appear, which allows you to manage your projects.

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