Details of keyword search (sorry for the dutch content)

1. bool: hond AND kat AND paard: a document is more interesting as more of the different keywords occur.

2. freq: hond OR kat OR paard: a document is more interesting as more keywords occur.

3. weighted: hond OF kat OF paard weighted: using the tf.idf and normalization of document length.

For indexing and retrieval, we used the venerable SMART program, that combines tf.idf word-weighting with the Vector Space Model.

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Demonstruction.