Foreword by Tobias Kuhn
Preface
Acknowledgments
Knowledge Graphs of Linked Data
Knowledge Graphs and Linked Data
RDF: Resource Description Framework
SPARQL: SPARQL Protocol and RDF Query Language
GraphQL: Web API Made Easy
Accessing Knowledge Graphs Programmatically
Querying Knowledge Graphs
HTTP Requests
SPARQL Libraries
Manipulating SPARQL's Output
Web Data APIs Over SPARQL
REST APIs
The OpenAPI Specification
Writing Web APIs
Writing Knowledge Graph APIs
Limitations of Knowledge Graph APIs
Repetitive Work
Query Management
Controlling Results
grlc: API Automation by Query Sharing
Overview
Architecture
Working with grlc
Features
Query Documentation
Query Variables
Query Execution
Query Result Manipulation
Exercises
Shaping JSON Results: SPARQL Transformer
SPARQL Results JSON Format: The Curse of the Bindings
Data Reshape with SPARQL Transformer
A Single JSON Object as Query and Template
Architecture
Features and Syntax
Merging Around an Anchor
Overview of $-Modifiers
Dealing with Languages
A Complete Example
grlc and SPARQL Transformer
Exercises
Applications
grlc
Linked Data Platform for Genetics Research
Nanopublications
CLARIAH and Social History Research
TNO: FoodCube
NewGen Chennai: Conference Proceedings
EU RISIS: Science, Technology, and Innovation
SPARQL Transformer
KG Explorer
FADE
grlc and Transformer
Demos/Links
Conclusion and Future Challenges
Solutions
Chapter 4
Chapter 5
Bibliography
Authors' Biographies
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