Semantic graph from free-text

Fatima, Arooj; Ghazi, Arsalan; Luca, Cristina

doi:10.1109/optim.2017.7975124

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2019

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“…A recent approach to machine reading is described in [6]. Authors use precomputed bag-of-keywords to extract named entities by doing exact word matching and try to detect relations by comparing words from sentence to ontology predicates.…”

Section: Related Workmentioning

confidence: 99%

LOD Construction Through SupervisedWeb Relation Extractionand Crowd Validation

Rumin

Mekterović

2019

JWE

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Free, unstructured text is the dominant format in which information is stored and published. To interpret such vast amount of data one must employ a programmatic approach. In this paper, we describe a novel approach -a pipeline in which interesting relations are extracted from web portals news texts, stored as RDF triplets, and finally validated by end user via browser extension. In the process, different machine learning algorithms were tested on relation extraction, enhanced with our own set of features and thoroughly evaluated, with excellent precision and recall results compared to models used for semantic knowledge expansion. Building on those results, we implement and describe the component to resolve discovered entities to existing semantic entities from three major online repositories. Finally, we implement and describe the validation process in which RDF triplets are presented to the web portal reader for validation via Chrome extension.

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Section: Related Workmentioning

confidence: 99%