Unit:
Κατεύθυνση / ειδίκευση Διαχείριση Πληροφορίας και Δεδομένων (ΔΕΔ)Πληροφορική
Author:
Pantazi Despina-Athanasia
Supervisors info:
Μανόλης Κουμπαράκης, Καθηγητής, Τμήμα Πληροφορικής και Τηλεπικοινωνιών, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Original Title:
Encoding and Validation of Earth Observation Metadata using Schema.org and SHACL
Translated title:
Encoding and Validation of Earth Observation Metadata using Schema.org and SHACL
Summary:
The current thesis presents a schema.org vocabulary extension for encoding Earth observation (EO) datasets and their properties. It is based on the vocabulary defined in OGC 17-003 specification, which describes a GeoJSON and JSON-LD encoding of Earth observation metadata for datasets. We updated this vocabulary in order to make it simpler, as schema.org principals demand, without excluding any information provided for the EO datasets. We also used Shapes Constraint Language (SHACL) in order to create a shapes graph for our schema.org extension. This shapes graph includes constraints regarding the properties of our vocabulary, so that we can model and validate RDF graphs constructed by EO data. We conclude by providing detailed examples for annotating and validating EO datasets based on our schema.org vocabulary extension.
Main subject category:
Technology - Computer science
Keywords:
Earth observation, linked data, schema.org, metadata, datasets, SHACL, semantic web
