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Knowledge extraction

Knowledge extraction is the creation of knowledge from structured (relational databases, XML) and unstructured (text, documents, images) sources. The resulting knowledge needs to be in a machine-readable and machine-interpretable format and must represent knowledge in a manner that facilitates inferencing. Although it is methodically similar to…

Knowledge discovery, Extraction from natural language sources & Examples

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Overview

Examples

Extraction from structured sources to RDF

Extraction from natural language sources

Knowledge discovery

Advanced semantic analysis

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Map overview Semantic statistics

Knowledge extraction

Nodes97
Edges96
Triples20
Avg. degree1.98
Density0.020619
Components1

How this topic connects Entity context

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Knowledge extraction

Top relations

related to Extraction from natural language sources · 5
Knowledge extraction → Because, HTML, If, In, The
related to Linguistic annotation / natural language processing (NLP) · 4
Knowledge extraction → As, Individual, NLP, Typical NLP
is a · 2
Knowledge extraction → creation of knowledge from structured, transformation of Wikipedia into structured data and also the mapping to existing knowledge
related to Tools · 1
Knowledge extraction → The

Important terminology Word statistics

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Important terminology

knowledge data extraction text rdf ontology entity information language relational structured process databases discovery natural used table ontologies existing entities

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Knowledge extractionis acreation of knowledge from structured0.90text
Knowledge extractionis atransformation of Wikipedia into structured data and also the mapping to existing knowledge0.90text
RDFinstance ofOverviewAfter the standardization of knowledge representation languages0.80text
OWLinstance ofOverviewAfter the standardization of knowledge representation languages0.80text
much research has been conducted in the areainstance ofOverviewAfter the standardization of knowledge representation languages0.80text
especially regarding transforming relational databases into RDFinstance ofOverviewAfter the standardization of knowledge representation languages0.80text
identity resolutioninstance ofOverviewAfter the standardization of knowledge representation languages0.80text
knowledge discoveryinstance ofOverviewAfter the standardization of knowledge representation languages0.80text
ontology learninginstance ofOverviewAfter the standardization of knowledge representation languages0.80text
DBpedia is establishedinstance ofare extracted with the help of a domain-specific lexicon to link these at entity linking.In entity linking a link between the extracted lexical terms from the source text and th…0.80text
Knowledge extractionrelated to Extraction from natural language sourcesThe0.60section
Knowledge extractionrelated to Extraction from natural language sourcesBecause0.60section

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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    Min side: 3
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