Abstract
The demo presents recent work on social robots that provide information from knowledge graphs in online graph databases. Sometimes more cooperative responses can be generated by using taxonomies and other semantic metadata that has been added to the knowledge graphs. Sometimes metadata about data provenance suggests higher or lower trustworthiness of the data. This raises the question whether robots should indicate trustworthiness when providing the information, and whether this should be done explicitly by meta-level comments or implicitly for example by modulating the robots' tone of voice and generating positive and negative affect in the robots' facial expressions.
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