Chapter 19

Acquisition of Commonsense Knowledge


We discuss systems and methods for acquiring the knowledge necessary for commonsense reasoning. First, we discuss the manual acquisition of commonsense knowledge in Cyc, WordNet, and ThoughtTreasure. We then describe systems for crowdsourcing commonsense knowledge, including Open Mind Common Sense and Learner. Next, we review games for acquiring commonsense knowledge, including Verbosity and Common Consensus. We then present methods for mining relation instances and implicit knowledge from natural language text. After that, we describe how to perform reasoning in the event calculus using knowledge acquired through crowdsourcing. Next, we compare the systems and methods for acquiring ...

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