OTNEL: A Distributed Online Deep Learning Semantic Annotation Methodology

• Published in: Big Data and Cognitive Computing
• Main Authors: Christos Makris, Michael Angelos Simos
• Format: Article
• Language: English
• Published: MDPI AG 2020-10-01
• Subjects: named entity disambiguation; text annotation; word sense disambiguation; ontologies; Wikification; neural networks
• Online Access: https://www.mdpi.com/2504-2289/4/4/31

Semantic representation of unstructured text is crucial in modern artificial intelligence and information retrieval applications. The semantic information extraction process from an unstructured text fragment to a corresponding representation from a concept ontology is known as named entity disambiguation. In this work, we introduce a distributed, supervised deep learning methodology employing a long short-term memory-based deep learning architecture model for entity linking with Wikipedia. In the context of a frequently changing online world, we introduce and study the domain of online training named entity disambiguation, featuring on-the-fly adaptation to underlying knowledge changes. Our novel methodology evaluates polysemous anchor mentions with sense compatibility based on thematic segmentation of the Wikipedia knowledge graph representation. We aim at both robust performance and high entity-linking accuracy results. The introduced modeling process efficiently addresses conceptualization, formalization, and computational challenges for the online training entity-linking task. The novel online training concept can be exploited for wider adoption, as it is considerably beneficial for targeted topic, online global context consensus for entity disambiguation.