Evolution of medical information retrieval.pptx

Evolution of medical information retrieval

1. Evolution of Medical Information Retrieval A Historical Perspective on IR in Medicine

2. This presentation explores the evolution of medical information retrieval (IR), highlighting its transformation from traditional bibliographic systems to advanced digital databases. We will examine the key processes involved in IR and the impact of technological advancements on the availability and retrieval of biomedical information.

3. Table of contents Overview of Information Retrieval Historical Milestones in Medical IR Advancements in Medical Information Retrieval The Information-Retrieval Process Indexing and Query Formulation Retrieval and Evaluation

4. Overview of Information Retrieval Definition of Information Retrieval (IR) as the identification and efficient use of recorded media.
Historical focus on text retrieval from biomedical literature.
Expansion of IR applications to multimedia publishing and diverse digital media.

5. Historical Milestones in Medical IR 1879: Creation of Index Medicus by Dr. John Shaw Billings for medical professionals.
1966: Development of MEDLARS, the first electronic version by the National Library of Medicine (NLM).
Emergence of full-text databases in the 1980s due to advancements in computing power.

6. Advancements in Medical Information Retrieval Introduction of the World Wide Web in the early 1990s.
Increased accessibility of vast quantities of medical information online.
Evolution from bibliographic retrieval systems to comprehensive information retrieval technologies.

7. The Information-Retrieval Process Framework derived from Gerard Salton's model consisting of four processes: indexing, query formulation, retrieval, and evaluation.
Indexing: Representation and storage of content in a database.
Query formulation: Translating information needs into structured queries compatible with the index.

8. Indexing and Query Formulation Different types of indexes, including inverted indexes.
Example of an inverted index for journal articles discussing heart disease.
Importance of formulating effective queries for accurate retrieval of information.

9. Retrieval and Evaluation Process of matching queries against the index to retrieve relevant documents.
Sorting and ranking search results based on relevance.
Importance of evaluation in refining queries and comparing different IR systems.

10. The evolution of medical information retrieval demonstrates a significant shift in the accessibility and scope of biomedical knowledge. With continuous advancements in technology, the future of IR promises further enhancements in efficiency and user experience.

11. References DeBakey, E. (1991). History of the Index Medicus. Siegel, A., et al. (1990). Evolution of Information Retrieval in Medicine. Miles, J. (1982). Development of MEDLARS and its impact on medical information access. Salton, G. (1983). Introduction to Information Retrieval. Berners-Lee, T., et al. (1994). The World Wide Web: A Global Information System.