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Investigating Lattice Techniques for Organising Document Collections

We have examined a number of methods for structuring and processing free text documents including formal concept analysis, knowledge spaces, and conceptual graphs. Lattice structures over documents has been previously shown to be eecient and eeective for information retrieval. We propose to integrate concept analysis, knowledge spaces and self-organisation in general and apply these methods to patient discharge summaries. We intend to demonstrate that a combination of conceptual graph representation of medical texts and document clustering techniques can provide eecient information retrieval and at the same time improve the quality of information returned to users.