The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, an improved genetic algorithm for optimization of flexible job-shop scheduling problem with fuzzy processing time and fuzzy due date is presented, which is used to research the complexities and essences of this problem. Firstly, the optimization model under uncertainty environment is built, and the objectives are to maximize the average agreement index, and minimize the maximum of fuzzy...
Web information scattered among the Web pages, and each store in its own structure and form. It is very difficult to meet the people's information searching needs rely on traditional search engine. A method of WEB content discovery based on Ontology-similarity is proposed in this paper to help people access information more effectively. In this way the author defines an application domain ontology...
A comprehensive evaluation index system was built on the basis of harmonious developments of economy, population, society and ecological environment. Through weighting the involved indexes with hierarchy analysis method, economy and society development of Tianjin, China in 2007 was evaluated by fuzzy comprehensive evaluation. The results showed that the comprehensive development of Tianjin belonged...
Intuitionistic fuzzy sets, originally proposed by Atanassov in 1986, are an attractive extension of fuzzy sets, which enriches the latter with extra features to represent uncertainty. The concept of IF rough sets comes from the combination of IF sets and rough sets. This paper studies axiomatic characterization of IF rough sets. The lower and upper approximations are respectively characterized by...
The determination of the optimal oxygen content is very important in power plant operation optimization. Due to the disadvantages of traditional ways, this paper proposed a new method to decide the optimal oxygen content based on incremental updating data mining. This method could determine the optimal oxygen content and related frequent items by fuzzy quantitative association rule mining algorithm...
This paper studies linear structure of fuzzy rough sets. Using the composition of fuzzy relation and a fuzzy set in a given universal set, a new representation of the fuzzy rough set upper approximations is given. According to this view of linearity, a simplified structure is obtained for the fuzzy rough set lower and upper approximations.
Automatic extraction of domain terms is the basis of domain ontology learning. General linguistic resources such as WordNet and HowNet can be applied to extract only partial domain terms from domain unstructured texts. In this paper, we firstly extract partial terms by calculating domain relatedness between words by HowNet. Then the extracted terms are semantically clustered with fuzzy c-means clustering...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.