Conclusion and Outlook Tại thời điểm này, nó có thể được hướng dẫn để nhìn lại chương 1, nơi mà tầm nhìn của Semantic Web được mô tả. Trong cuốn sách này, chúng tôi mô tả các công nghệ Web ngữ nghĩa quan trọng. Bây giờ chúng ta xem xét một kịch bản tự động thương lượng để xem tất cả các công nghệ thảo luận phù hợp với nhau. • Mỗi bên thương lượng được đại diện bởi một đại lý phần mềm. Chúng tôi đã không thảo luận các đại lý trong cuốn sách này và tham khảo. | TLFeBOOK 8 . wJ Conclusion and Outlook How It All Fits Together At this time it may be instructive to look back at chapter 1 where the Semantic Web vision was described. In this book we described the key Semantic Web technologies. Now we consider an automated bargaining scenario to see how all technologies discussed fit together. Each bargaining party is represented by a software agent. We have not discussed agents in this book and refer readers to the extensive literature. Often agents are treated as black boxes which solve all problems miraculously. We preferred to concentrate on the internals of agents and refrained from discussing aspects of agent communication and collaboration. The agents need to agree on the meaning of certain terms by committing to a shared ontology . written in OWL. Case facts offers and decisions can be represented using RDF statements. These statements become really useful when linked to an ontology. Information is exchanged between the agents in some XML-based or RDFbased language. The agent negotiation strategies are described in a logical language. An agent decides about the next course of action through inferring conclusions from the negotiation strategy case facts and previous offers and counteroffers. TLFeBOOK TLFeBOOK 224 8 Conclusion and Outlook Some Technical Questions Web Ontology Language Is Less More Much of the effort in Semantic Web research has gone into developing an appropriate Web ontology language resulting in OWL as the current standard. One key question is whether the ontology languages need to be very complex. While one can always think of cases that one might wish to model and that are beyond the expressive power of full first-order logic the question remains whether these issues are important in practice. There are reasons to expect that most ontological knowledge will be of a rather simple nature and that less expressive languages will be sufficient. The advantages of simple ontology languages .
