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4UMLS&_MetaMap (UMLS (Componenti (Metathesaurus (CUI_ Unique…
4
UMLS
&_MetaMap
UMLS
composto da
File
Software
definito da
più standard
Ontologie
Fornisce
Interoperabilità semantica
Componenti
Semantic Network
semantic type
like Disease or Syndrome or Clinical Drug
suddivisi in
evento
entità
semantic relationship
useful relationships that exist between semantic types
gerarchiche
is a kind of
non gerarchiche
Spatially related to
Temporally related to
Physically related to
Functionally related to
Conceptually related to
use to
help interpret meaning
SPECIALIST_Lexicon & Tools
Words are selected for lexical coding
lexical entries
Each entry represents a word (lexical item). The entry covers one or more spellings in a particular part of speech and describes the morphologic, orthographic and syntactic properties of a word.
Lexical tools
collection of java programs that process natural language words and terms
include
Normalizer
word index generator
a lexical variant generator
Metathesaurus
CUI_ Unique identifier _set of synonymous concept name
SUI
string
Distinct concept name
LUI_ term_set of normalize concept
AUI_concept name in a given source
NLP
Complex task
Contextual attribut assignment
Negazione
Incertezza
Temporalità
Discourse processing
Report structure
Named entity recogniziotion
Variazione linguistica, parole diverse con stesso significato
Metodi utilizzati
Linguistico focalizzato
Machinelearning
Statistico focalizzato
linguistico--statistico
NLP tool : Metamap
MetaMap
Algoritmo
Lexical/syntactic analysis
Tokenization
Parsing
Mapping to UMLS
Candidate retrieval
Candidate evaluation
Coesione
Distanza
Centralità
Copertura
Variant generation
Mapping construction