ーStudy of Natural Language as a Complex SystemーWe study mathematical properties of natural language by using the theory of complex systems. The relation between linguistic structure (such as words and grammar) and large-scale properties is investigated from the perspectives of fractals and chaos. Mathematical models of language that reproduce such understanding are explored and are applied to natural language processing. (Book Reference)
Language has properties in common with other large-scale social systems, such as finance and communication networks. We explore new ways of engineering these social systems by using texts and computing with large-scale resources.