Awesome KGC Tools

Links and description of Knowledge Graphs Construction Tools

KGC Materializers

• Morph-KGC - R2RML and RML processor to generate RDF knowledge graphs from heterogeneous data sources at scale.
• Chimera - Framework based on Apache Camel to define composable semantic data transformation pipelines (lifting/lowering to/from RDF)
• RMLMapper - The RMLMapper executes RML rules to generate high quality Linked Data from multiple originally (semi-)structured data sources
• RMLStreamer - The RMLStreamer executes RML rules to generate high quality Linked Data from multiple originally (semi-)structured data sources in a streaming way.
• xls2rdf - converts Excel files containing a "magic line" into RDF.

KGC Virtualizers

• Ontop - Ontop is a platform to query relational databases as Virtual RDF Graphs using SPARQL (R2RML)

KGC Pre-processors

• MEL - (Metadata Extractor & Loader) - A tool to extract metadata (and textual content) from various file formats, as JSON objects.
• FunMap - Efficient preprocessing of transformation rules described in RML+FnO mappings.

NLP for KGC

• TNNT - (The NLP/NER Toolkit) - A tool that automates the extraction of categorised named entities from the unstructured information encoded in the source documents, using diverse NLP tools and NER models.

Mapping specifications

• RML - The RDF Mapping language (RML) is a mapping language defined to express customized mapping rules from heterogeneous data structures and serializations to the RDF data model.
• Target in RML - Alignment between RML and Target to describe how your knowledge graph should be exported to one or multiple targets.
• DataIO - Target, a formal model and a common representation for specifying how a Knowledge Graph should be exported to a given target
• FnO - Function Ontology (FnO), a way to semantically declare and describe implementation-independent functions, and their relations to related concepts such as parameters, outputs, related problems, algorithms, mappings to concrete implementations, and executions.
• YARRRML - YARRRML is a human readable text-based representation for declarative generation rules.
• J2RM - J2RM mappings and its engine compose a tool to process mappings from JSON data to RDF triples guided by an OWL2 ontology structure.
• xls2rdf - The documentation for the "magic line" of the xls2rdf converter.

Mapping Editors

• Mapeathor - Definition of Excel-based mappings and translation to [R2]RML mappings.
• Matey - Matey is a web based editor for YARRRML rules.
• RMLEditor - RMLEditor offers a Graphical User Interface to enable data publishers, who are domain experts, to model knowledge derived from heterogeneous distributed data.
• RMLx Visual Editor - A web based editor for RML rules.
• Square - SPARQL Queries and R2RML mappings Environment
• Map-On - A web-based editor for visual ontology mapping for R2RML documents (DEPRECATED)

KGC Pipelines

• KGCP - "KG Construction Pipeline" - A suite of software artifacts to automate the creation of KGs from heterogeneous data sources.