Category: Summaries
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Joseph Henrich – The weirdest people in the world
I want to talk about a book I liked a lot because it tries to explain how our western countries work and also a little why the west has certain features that are different from other places. The question is: why did the west become the place where the modern nation state was born and…
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Roman Mars – The 99% invisible city
I really love the podcast 99% invisible that deals with design. Therefore I was excited when they announced a book about hidden design in cities. The book copies the aim of the podcast to make the invisble visible and point the reader to design in cities and the cool stories behind it. It is divided…
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Semantic Web Technologies – OWL, Rules and Reasoning
Summary of week four for the course Knowledge Engineering with Semantic Web Technologies 2015 by Harald Sack at OpenHPI. RDFS Semantics: we need this because there was no formal description of the semantics and then the same querys gave back different results. So you add semantics. Every triple encoded in RDF is a statement and…
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Semantic Web Technologies – Ontology and logic
Summary of week three for the course Knowledge Engineering with Semantic Web Technologies 2015 by Harald Sack at OpenHPI. This lecture deals with ontologies. If you want to speak a common language, you need: common symbols and concepts (Syntax) agreement about their meaning (Semantics) classification of concepts (Taxonomy) associations and relations of concepts (Thesauri) rules…
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Semantic Web Technologies – RDFS and SPARQL
Summary of week two for the course Knowledge Engineering with Semantic Web Technologies 2015 by Harald Sack at OpenHPI. Reification allows you to make reference statements. Therefore a statement also gets an URL. It also allows you to make statements about statements and assumptions about assumptions (e.g. Sherlock Holmes thinks that the gardener murdered the…