Automatic Message Indexing and Full Text Retrieval for a Communication Aid
Stefan Langer, Marianne Hickey · 1997
The aim of the WordKeys project is to enhance a communication aid with techniques based on research in text retrieval, in order to reduce the cognitive load normally associated with retrieving pre-stored messages in augmentative and alternative communication (AAC) systems. In this paper, the differences between traditional information retrieval and the requirements for text retrieval in a communication aid are highlighted. We then present the overall design of the retrieval based communication aid, and describe the morphological analysis module used for indexing and the ranking algorithm in more detail. The system relies on a large lexicon for the automatic indexing of messages and for semantic query expansion. The lexicon is derived from the WordNet database and additionally includes frequency information. Currently, user trials are being carried out to determine the suitability of the approach for AAC. 1 Message retrieval for an AAC system Currently, there exist different types of ...