Ontology management for NLU: the L

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Ontology management for NLUthe LC approach

• W. Ceusters
• CTO
• Language Computing nv, Zonnegem, Belgium

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The main objective

• 1. Male or female
• 2. Age 50 to no upper limit
• 3. Hypertension documented according to the 6th
  report of the Joint National Committee on
  Detection and Evaluation of the treatment of high
  BP (JNC VI) and the need for drug therapy
  (previously documented hypertension in patients
  currently taking antihypertensive agents is
  acceptable)
• 4. Documented CAD (e.g., classic angina pectoris
  (stable angina pectoris Heberden angina
  pectoris), myocardial infarction three or more
  months ago, abnormal coronary angiography, or
  concordant abnormalities on two different types
  of stress tests)
• 5. Willingness to sign informed consent

• Mr. Kovács is an 83-year-old man with past
  medical history of hypertension, congestive heart
  failure, atrial fibrillation, hypercholesterolemia
  , history of CVA who presented to Budapest
  Emergency Room on April 25 with chief complaint
  of right-sided chest pain since April 24. The
  patient was in his usual state of health until
  April 24 when he experienced right-sided chest
  pain after 10 minutes of bicycling exercise at
  YMCA. He described the chest pain as a dull ache
  in the right side of his chest radiating
  posteriorly to the right scapular area. He rated
  the intensity as 7 out of 10. The chest pain
  lasted about 3 minutes and resolved with rest.
  That same night, the patient once again
  experienced right-sided chest pain while lying in
  bed right before he went to sleep. He describes
  the pain as right-sided chest pain with same
  radiation to posterior at an intensity of 6-7 out
  of 10. The chest pain lasted about 10 minutes and
  resolved spontaneously.

deep text understanding
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Triadic models of meaning The Semiotic/Semantic
triangle
Reference Concept / Sense / Model / View /
Partition
Sign Language/ Term/ Symbol
Referent Reality/ Object
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Tetrahedric M.I. extension
CEN/TC251 ENV 12264
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Ontological extension

• In Information Science
• An ontology is a description (like a formal
  specification of a program) of the concepts and
  relationships that can exist for an agent or a
  community of agents. (Tom Gruber)
• In Philosophy
• Ontology is the science of what is, of the kinds
  and structures of objects, properties, events,
  processes and relations in every area of
  reality. (Barry Smith)

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Our approach
the real world
the standard view
our view
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Exploit the relationships along the vertices
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The possible final picture
BFO/MedO
validates
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An integrated approach
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Medico-linguistic ontology
Formal Domain Ontology
Cassandra Linguistic Ontology
MEDDRA
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Based on formal ontology
HAS-PARTIAL-SPATIAL-OVERLAP
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Linguistic and domain ontologies
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Analysis of History of CVA
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Concepts-terms-criteria-definitions
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Ontology alignment
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