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With the rapid development of online e-commerce, traditional collaborative filtering algorithms have the disadvantages of data set reduction and sparse matrix filling cannot meet the requirements of users. This paper takes handicrafts as an example to propose the design and application of handicraft recommendation system based on an improved hybrid algorithm. Based on the theory of e-commerce system, through the traditional collaborative filtering algorithm of users, the personalized e-commerce system of hybrid algorithm is designed and analyzed. The personalized e-commerce system based on hybrid algorithm is further proposed. The component model of the business recommendation system and the specific steps of the improved hybrid algorithm based on user information are given. Finally, an experimental analysis of the improved hybrid algorithm is carried out. The results show that the algorithm can effectively improve the effectiveness and exemption of recommending handicrafts. What’s more, it can reduce the user item ratings of candidate set and improve accuracy of the forecast recommendation.

Smart wearable is expected to give the elderly more peace of mind and experience in a comfortable home environment. This not only satisfies their desire to live relatively independently, but also avoids the waste of resources caused by the lack of timely detection and feedback of aging and health problems, and contributes to the sustainable development of society. In order to meet the current demand for high development of smart wearable products for the elderly at home, and to lay out the limited design resources on the key design factors so as to enhance the consumer experience, a design element system is constructed from a sustainable perspective. The textual measures of academic literature and product evaluations are used to analyze the relevant theoretical foundations and the current state of the market category products. Based on this, the user’s needs at the instinctive, behavioral and reflective levels are captured through expert panel interviews, and the initial requirement importance is calculated. The QFD quality house model is used to translate the needs into design factors and score them based on the relationship degree of the needs, and finally construct the design factor system of smart wearable for the elderly at home in a sustainable perspective.

The aim of this chapter is to apply Systems Theory – Systems Science – to Ontologies. The subject matter is given a modern context. The chapter contains a brief description of Systems Theory, which today has become what is known as Systems Science. Subsequently, Systems Science and systems are defined, as well as the links that are responsible for the correct function of a system, known as vectors. Ontologies will be discussed, along with their various definitions and characteristics. This chapter will be based on the premise that Ontology is a complex, conceptual, empirical classification system. An Ontology is structured like a system in which the principal and primary node is the word. A summary will be made of how this system should be constructed, concentrating on the vectors that help the system function. This will be illustrated with an example.

In this paper, the satisfiability theorem, compactness theorem and decidability theorem for the system are proved, which pefects the theoretical system of . Moreover, necessary and sufficient conditions for Σ_Γ-truth degree and conditional truth degree existing are given by the satisfiability theorem.

Firstly, the theory and techniques of the CET4 Diagnostic Practice System were analyzed. Secondly, the architecture and development mode of the system has been determined and the main functional modules has been designed detailedly. Last, the implementation of system architecture has been elaborated on the basis of the development environment and tools. This system is a kind of deep practice and innovation on CET-4, aimed at learners can receive personalized learning guidance and targeted diagnostic evaluation according to their characteristics, thus improving the standard of English learners and learning ability, so it has a wide range of prospect and practical value.