Information retrieval from hospital information system: Increasing effectivity using swarm intelligence



Rok publikování 2015
Druh Článek v odborném periodiku
Časopis / Zdroj Journal of Applied Logic
Fakulta / Pracoviště MU

Lékařská fakulta

Obor Gynekologie a porodnictví
Klíčová slova Swarm intelligence; Ant colony; Textual data mining; Medical record processing; Hospital information system
Popis This paper details the process of mining information from a hospital information system that has been designed approximately 15years ago. The information is distributed within database tables in largetextual attributes with a free structure. Information retrieval from these information is necessary for complementing cardiotocography signals with additional information that isto be implemented in a decision support system. The basic statistical overview (n-gram analysis) helped with the insight into data structure, however more sophisticated methods have to be used as human (and expert) processing of the whole data wereout of consideration: over 620,000text fields containedtext reports in natural language with (many) typographical errors, duplicates, ambiguities, syntax errors and many (nonstandard) abbreviations. There was a strong need to efficiently determine the overall structure of the database and discover information that isimportant from the clinical point of view. We have used three different methods: k-means, self-organizing map and a self-organizing approach inspired by ant-colonies that performed clustering of the records. The records were visualized and revealed the most prominent information structure(s) that were consulted with medical experts and served for further mining from the database. The outcome of this task is a set of ordered or nominal attributes with a structural information that is available for rule discovery mining and automated processing for the research of asphyxia prediction during delivery. The proposed methodology has significantly reduced the processing time of loosely structured textual records for both IT and medical experts.

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