Applying Concept Algebra to Information Restructuring of Web Documents

On the basis of concept algebra, this article presents a hierarchical model for web document restructuring and comprehension. The formal model for information restructuring of web documents is built on decoding the external knowledge representation in informal documents into cognitive knowledge represented by concept algebra and concept networks. The semantic relations between concepts in a document are expressed by semantic links among concepts. To automatically implement the information restructuring by machines, a two level knowledge base that mimic human lexical, syntactical, and semantic cognition is introduced. The information restructuring model provides a foundation for automatic concept indexing and knowledge extraction from web documents.