In this book the authors introduce and define semantic domains a computational model for lexical semantics inspired by the theory of semantic fields semantic domains allow us to exploit domain features for texts terms and concepts and they can significantly boost the performance of natural language processing systems semantic domains can be derived from existing lexical resources or can be acquired from corpora in an unsupervised manner they also have the property of interlinguality . In this book the authors introduce and define semantic domains a computational model for lexical semantics inspired by the theory of semantic fields semantic domains allow us to exploit domain features for texts terms and concepts and they can significantly boost the performance of natural language processing systems semantic domains can be derived from existing lexical resources or can be acquired from corpora in an unsupervised manner they also have the property of interlinguality . A computational model for lexical semantics based on semantic domains this concept is inspired by the theory of semantic fields proposed in structural linguistics to explain lexical semantics the main property of semantic domains is lexical coherence ie the property of domain related words to co occur in texts this allows us to de ne automatic acquisition. For this reason semantic domains provide a precious knowledge source to estimate topic similarity among texts another very important property of semantic domains is their multilinguality we have