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Ontology management for NLU: the L&C approach

Ontology management for NLU: the L&C approach. W. Ceusters CTO * Language & Computing nv, Zonnegem, Belgium . The main objective. 1. Male or female 2. Age 50 to no upper limit

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Ontology management for NLU: the L&C approach

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  1. Ontology management for NLU:the L&C approach W. Ceusters CTO * Language & Computing nv, Zonnegem, Belgium

  2. 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

  3. Triadic models of meaning: The Semiotic/Semantic triangle Reference: Concept / Sense / Model / View / Partition Sign: Language/ Term/ Symbol Referent: Reality/ Object

  4. concept definition term referent Tetrahedric M.I. extension CEN/TC251 ENV 12264

  5. “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)

  6. medical+linguistic ontology (data + algorithms) concept system concept system language definitions referents language referents Our approach the real world the standard view our view

  7. Halliday’s systemic functional grammar Aristotelian realism The structures of language are partially determined by our conceptualisation of the world.Halliday No mental representation without language Fodor Meaning is located in the interaction between living beings and the environment James J. Gibson, Ecological Realism in Psychology concept referents language Baboons and humans have different cut-off points for discerning "same" objectsbecause our verbal expression for "same" makes the idea of "same" more restrictive.” Fagot and Wasserman (Centre for Research in Cognitive Neuroscience in Marseille) Exploit the relationships along the vertices

  8. The possible final picture BFO/MedO “validates”

  9. NLU enabling tools for knowledge supported data-entry and -retrieval L L L & & & C C C Linguistic application components Medical and linguistic knowledge required for language understanding LinC Base Data structure and function library for language understanding LinC Factory An integrated approach

  10. Language A Proprietary Terminologies L & C LanguageB Lexicon Lexicon Others ... Grammar ICPC Grammar SNOMED ICD LinC Base Medico-linguistic ontology Formal Domain Ontology Cassandra Linguistic Ontology MEDDRA

  11. HAS-SPATIAL-POINT-REFERENCE HAS-CONNECTING-REGION HAS-OVERLAPPING-REGION IS-SPATIAL-PART-OF HAS-DISCRETED-REGION HAS-SPATIAL-PART HAS-DISCONNECTED-REGION IS-PROPER-SPAT.-PART-OF IS-INSIDE-CONVEX-HULL-OF HAS-PROPER-SPATIAL-PART IS-PARTLY-IN-CONVEX-HULL-OF IS-OUTSIDE-CONVEX-HULL-OF HAS-EXTERNAL-CONNECTING-REGION IS-NON-TANG.-SPAT.-PART-OF IS-TANG.-SPAT.-PART-OF IS-TOPO-INSIDE-OF IS-GEO-INSIDE-OF IS-SPAT.-EQUIV.-OF HAS-NON-TANG.-SPAT.-PART HAS-TANG.-SPAT.-PART Based on formal ontology HAS-PARTIAL-SPATIAL-OVERLAP

  12. Generalised Possession Healthcare phenomenon Human Has- possessor Has- possessed IS-A 1 1 2 1 IS-A Having a healthcare phenomenon IS-A 2 Is-possessor-of Patient Has-Healthcare-phenomenon Malignant neoplasm IS-A 3 IS-A 3 Cancer patient lung carcinoma Mr. Kovácshasa pulmonary carcinoma Linguistic and domain ontologies

  13. Analysis of “History of CVA”

  14. Concepts-terms-criteria-definitions

  15. Ontology alignment

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