THE MLP INFORMATION FORMAT STRUCTURE COMPONENT


 
The Medical Information Format Structure (IFS) component is basically a mapping of the syntactic parse trees into a medical information format structures usable (retrievable) by clinical information retrieval systems.

The IFS component reads in parse trees that were filtered, decomposed, and rearranged along the Polish notational structures that have been assigned information format types. The IFS types are defined as:

  1. DOCUMENT-INFO
  2. PATIENT-STATE
  3. FAMILY/FRIEND
  4. ALLERGIES
  5. MEDICATIONS-INFO
  6. MED-SURG-PROCEDURES
  7. TREATMENTS
  8. IMAGING-INFO (required medically tagged lexicon)
  9. EKG-TEST
  10. LAB-TEST
  11. TEXTPLUS
For each grossly assigned information format types, the IFS component maps each word or unit phrases into their corresponding pre-defined IFS labelled nodes (fields).

And finally the IFS component issues two roughly equivalent types of output:

  1. Tab delimited output for relational dBMS
  2. XML format.
For example, the sentence Today, she had no cough, chest pain or shortness of breath now becomes three IFS units conjoined by "," and "and" (from "or" in the scope of negation "no").
  • CONNECTIVE
    • PATIENT-STATE: Today, she had no cough
    • CONJOINED: ,
    • CONNECTIVE
      • PATIENT-STATE: Today, she had no chest pain
      • CONJOINED: and
      • PATIENT-STATE: Today, she had no shortness of breath
The negative word no is a modifier of the verb had (verb to have — tensed and past). It can also be a modifier of the central nouns cough, chest pain, and shortness of breath. Both of these analyses are equivalent.

Cf. Naomi Sager, Carol Friedman, Margaret S. Lyman, MD., et al. 1987. Medical Language Processing: Computer Management of Narrative Data. Addison-Wesley Publishing Co.


 
Copyright © 2005 by Medical Language Processing, LLC.