L & C Dr. W. Ceusters Language & Computing nv www.landc.be 1 L&C’s LinkBase: a multi-lingual Hub to medical terminologies Dr. W. Ceusters Dir R&D Language.

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L & C Dr. W. Ceusters Language & Computing nv 1 L&C’s LinkBase: a multi-lingual Hub to medical terminologies Dr. W. Ceusters Dir R&D Language & Computing nv

L & C Dr. W. Ceusters Language & Computing nv 2 Client Graphical Objects

L & C Dr. W. Ceusters Language & Computing nv 3 The L&C Linguistic Concept Database Formal Domain Ontology Lexicon Grammar Language A Lexicon Grammar Language B Cassandra Linguistic Ontology MEDRA ICD SNOMED ICPC Others... Proprietary Terminologies

L & C Dr. W. Ceusters Language & Computing nv 4 A formal terminology Separation of terms and concepts To be used by machines, not people All information is explicit in the structure, not implicit in the terms Clean subsumption hierarchies Formal, “computable” definitions of concepts Internal, automated quality control

L & C Dr. W. Ceusters Language & Computing nv 5 Expl: Joint anatomy joint HAS-HOLE joint space joint capsule IS-OUTER-LAYER-OF joint meniscus –IS-INCOMPLETE-FILLER-OF joint space –IS-TOPO-INSIDE joint capsule –IS-NON-TANGENTIAL-MATERIAL-PART-OF joint joint –IS-CONNECTOR-OF bone X –IS-CONNECTOR-OF bone Y synovia –IS-INCOMPLETE-FILLER-OF joint space synovial membrane IS-BONAFIDE- BOUNDARY-OF joint space

L & C Dr. W. Ceusters Language & Computing nv 6 Expl: Relative spatial localisation IS- TOPO- INSIDE- OF IS-GEO- INSIDE- OF IS- INSIDE- CONVEX- HULL-OF IS-PARTLY- IN-CONVEX- HULL-OF IS- OUTSIDE- CONVEX- HULL-OF HAS- DISCONNECTED- REGION HAS- EXTERNAL- CONNECTING- REGION HAS-DISCRETED- REGION HAS- TANG.- SPAT.- PART HAS-NON- TANG.- SPAT.- PART IS- SPAT.- EQUIV.- OF IS- TANG.- SPAT.- PART-OF IS-NON- TANG.- SPAT.- PART-OF HAS- PARTIAL- SPATIAL- OVERLAP HAS- PROPER- SPATIAL -PART IS- PROPER- SPAT.- PART-OF HAS- SPATIAL -PART IS- SPATIAL -PART- OF HAS- OVERLAPPING -REGION HAS- CONNECTING- REGION HAS-SPATIAL- POINT- REFERENCE

L & C Dr. W. Ceusters Language & Computing nv 7 L&C’s strong position Multi-lingual and multi-cultural approach Modelling independent from specific languages but not from language as communication medium Proven scalability of our approach Support at all levels –Services to migrate existing client dictionairies –Large tool set for terminology development, maintenance, and/or use Only company with in-house expertise in medicine, computational linguistics in many languages, formal ontologies and informatics