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Revision as of 15:25, 26 April 2023

Overview

The MaschinenBauIndustrie (MBI) Knowledge Graph contains structured data from the book "Die Maschinen-Industrie im Deutschen Reich" written by Herbert Patschan in 1937. The book was scanned, OCR-ed, structured and semantified at UB Mannheim. The data includes basic data for the German companies from machine industry.

Access to data

The MBI data is accessible by both humans and machines
The MBI data is currently not available openly
List of properties
List of items
Advanced search for items
SPARQL endpoint
API
Export to CSV
Every entity can be downloaded in .json, .rdf, .ttl, .nt and .jsonld formats. An example for Daimler-Benz A.-G.: https://mbi.kgi.uni-mannheim.de/entity/Q707.json, https://mbi.kgi.uni-mannheim.de/entity/Q707.rdf, https://mbi.kgi.uni-mannheim.de/entity/Q707.ttl, https://mbi.kgi.uni-mannheim.de/entity/Q707.nt and https://mbi.kgi.uni-mannheim.de/entity/Q707.jsonld.

Data model

Properties
- [a-z.%2B%22)))%0A%20%20OPTIONAL%20{%20%3FpropertyWikibase%20skos%3AaltLabel%20%3FpropertyAlias.%20}%0A} Properties with capitalized labels] are initial properties having datatypes "string" and used to model raw extracted data.
- [a-z.%2B%22))%0A%20%20OPTIONAL%20{%20%3FpropertyWikibase%20skos%3AaltLabel%20%3FpropertyAlias.%20}%0A} Properties with non-capitalized labels] are properties having various datatypes (e.g., "item", "time") and used to model "semantified data".
Items
- Classes

Use Cases

Searching basic data for German companies in machine industry for the year 1937
Matching your (meta)data to MBI data using the MBI reconciliation service
Clean your tabular data and match it to the MBI knowledge graph with OpenRefine and the MBI reconciliation service
Semantic annotation of tabular data using the MBI knowledge graph with bbw
Federated queries over MBI, Wikidata and other SPARQL endpoints

Get involved

You can contribute to this project in various ways: matching data, data quality checks and data editing/upload.
You can give your feedback at GitHub MBI-KG Issues.
You can get an account here via email request to the Research Data Center at UB Mannheim. Please write "Request an account at the MBI KG" as a subject.
If you are new to knowledge graphs, check out materials at Wikibase Knowledge Graphs.
The MBI knowledge graph is based on Wikibase, the software behind Wikidata. Therefore the Wikidata tutorials are also highly recommended.

@@ Line 17: / Line 17: @@
 ==Data model==
 *Properties
-**Properties with capitalized labels are initial properties having datatypes "string" and used to model raw extracted data.
+**[https://query.mbi.kgi.uni-mannheim.de/embed.html#%23Properties%20with%20capitalized%20labels%20and%20their%20datatypes%0ASELECT%20DISTINCT%20%3FpropertyWikibase%20%3FpropertyLabel%20%3FpropertyType%20WHERE%20{%0A%20%20%3FpropertyWikibase%20wikibase%3AdirectClaim%20%3Fp%3B%0A%20%20%20%20wikibase%3ApropertyType%20%3FpropertyType%3B%0A%20%20%20%20rdfs%3Alabel%20%3FpropertyLabel.%0A%20%20FILTER(!(REGEX(%3FpropertyLabel%2C%20%22[a-z].%2B%22)))%0A%20%20OPTIONAL%20{%20%3FpropertyWikibase%20skos%3AaltLabel%20%3FpropertyAlias.%20}%0A} Properties with capitalized labels] are initial properties having datatypes "string" and used to model raw extracted data.
-**Properties with non-capitalized labels are properties having various datatypes (e.g., "item", "time") and used to model "semantified data".
+**[https://query.mbi.kgi.uni-mannheim.de/embed.html#SELECT%20DISTINCT%20%3FpropertyWikibase%20%3FpropertyLabel%20%3FpropertyType%20WHERE%20{%0A%20%20%3FpropertyWikibase%20wikibase%3AdirectClaim%20%3Fp%3B%0A%20%20%20%20wikibase%3ApropertyType%20%3FpropertyType%3B%0A%20%20%20%20rdfs%3Alabel%20%3FpropertyLabel.%0A%20%20FILTER(REGEX(%3FpropertyLabel%2C%20%22[a-z].%2B%22))%0A%20%20OPTIONAL%20{%20%3FpropertyWikibase%20skos%3AaltLabel%20%3FpropertyAlias.%20}%0A} Properties with non-capitalized labels] are properties having various datatypes (e.g., "item", "time") and used to model "semantified data".
 *Items
 **Classes