Fig. 1: Speech graph methodology. | Schizophrenia

Fig. 1: Speech graph methodology.

From: Who does what to whom? graph representations of action-predication in speech relate to psychopathological dimensions of psychosis

Fig. 1

a Structural and semantic graph representations of a given text are illustrated. The structural representation is produced based on sequential relations between lemmatized content words (e.g., I→see→cookie→jar, etc.). The semantic representation is produced by connecting elements that act upon each other (e.g., I→chair; kid→cookie jar), and linking verb predicates to their arguments (e.g., see→I; see→chair; grab→kid; grab→cookie jar). b Dynamic graph features are computed by sliding a window of fixed length throughout each sample to produce n instances of graph representations. Subsequently, each graph feature is calculated as the mean value of n features each belonging to a particular instance. Successive sequential graphs progress one word at a time in windows of 30 words, and semantic graphs slide one utterance at a time in windows of three utterances.

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