Biomedical subjects

Simon Hölzer

Publications and source records attributed to Simon Hölzer.

3 recordsLinked to original sources

PubMed2005

Advanced Information Retrieval Using XML Standards.

The bulk of clinical data is available in an electronic form. About 80% of the electronic data, however, is narrative text and therefore limited with respect to machine interpretation. As a result, the discussion has shifted from "electronic versus paper based data" towards "structured versus unstructured electronic data". The XML technology of today paves a way towards more structured clinical data and several XML based standards such as the Clinical Document Architecture (CDA) emerge. The implementation of XML based applications is yet a challenge. This paper will focus on XML retrieval issues and describe the difficulties and prospects of such an approach. The result of our work is a search technique called "topic matching" that exploits structured data in order to provide a search quality that is superior to established text matching methods. With this solution we are able to utilize large numbers of heterogeneously structured documents with only a minimum of effort.

Databases, Factual↗

PubMed2003

Accurate searching using XML and topic maps.

Most clinical data is narrative text and often not accessible and searchable at the clinical workstation. We have therefore developed a search engine that allows indexing, searching and linking different kinds of data using web technologies. Text matching methods fail to represent implicit relationships between data, e.g. the relationship between HIV and AIDS. The ISO topic maps standard provides a data model that allows representing arbitrary relationships between resources. Such relationships form the basis for context sensitive searching and accurate search results. XML standards are used for the interchange of data relationships. Our approach has been applied to medical classification systems and clinical practice guidelines with promising results.

Germany↗

PubMed2002

Supporting clinical practice guidelines: lifecycle of guidelines for oncology within an XML-based guideline framework.

Clinical Practice Guidelines (CPGs) have become important instruments for supporting patient care. Many structure models for CPGs have been developed to explicitly gain structured CPG documents, some of them using XML. Often, however, problems arise in filling these structures with content and integrating CPG applications into an EPR/HIS The Universities of Giessen and Heidelberg have each presented an XML-based CPG structure, which are actually being merged into one. The obtained CPG structure will build our common "xCPG core model" embedded in an "XML framework", an authoring environment. This paper shows how this model used in the framework could support the entire 5-step CPG lifecycle, spanning CPG development, the integration of a CPG into an EPR/HIS, as well as maintenance. Furthermore, this paper points out how the method draws on the different information management services as a precondition for successful CPG implementation.

Medical Oncology↗