CHAPTER 2

What is Meaning?

#2 Meaning can be modeled in terms of validity and reference.

This chapter describes the basic concepts that philosophers and formal semanticists use to talk about the meaning of natural language. We will address how those concepts, when used with care, are useful for developing NLP systems.

Looking at language in terms of logic illuminates the meaning of certain key kinds of expressions, by grounding them in the validity of arguments. A valid argument is an argument where if its premises are true, then its conclusion must also be true. The meanings of certain kinds of natural language expressions play a crucial role in contributing to the validity of arguments and so one can represent their meaning by modeling that ...

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