Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
An improved particle swarm optimization (PSO) algorithm based on self-adaptive excellence coefficients, Cauchy operator and 3-opt, called SCLPSO, is proposed in this paper in order to deal with the issues such as premature convergence and low accuracy of the basic discrete PSO when applied to traveling salesman problem (TSP). To improve the optimization ability and convergence speed of the algorithm,...
The notion of ‘classes of a path in an Entity-Relationship (ER) data schema’ has been proposed as a means of identifying and formalizing the capability of a database in answering a query. In the literature, a possible approach based upon Description Logics (DL) has been put forward to accurately and formally describe paths in ER schemata. However the reasoning part of classifications of paths has...
In the research area of questionnaire design, whether a questionnaire is a good design is still a hard question. In this paper, we shed some light on it by borrowing an idea of information integration, which makes use of the notion of information carrying relation. An information flow based approach is therefore proposed to tackle the problem of questionnaire design and find information carrying relations...
In this study, a conceptual framework to help investigate sustainable supply chain management (SSCM) in Beijing environmental logistics by embracing the sustainability theoretic perspectives is introduced. It aims to find a trade-off among social, environmental and economic performances in SSCM. Followed by the proposed framework, the authors then identified Critical Success Factors (CSF) for Beijing...
The notion of 'classes of a path in an Entity-Relationship (ER) data schema' was put forward as a characterization of the capability of a schema of accommodating data instances whereby to provide information for various purposes including answering a query. Thus far though, criteria with which a process of classifying paths can be systematically carried out are yet to be found and formulated. To this...
To tackle the capability of a data schema of bearing information, a model for the definition and exploitation of what we call the 'Information Bearing Capability' of a database (IBC Model for short) model has been proposed. In this paper, we present the notion of IBC with a brief justification. We then describe the IBC model with a diagram and present a set of inference rules for reasoning about information...
In information systems integration, whether the instances of a schema of an information system may be recovered from those of another is a question, which seems profound, and yet has not been well investigated. We shed some light on it by using the notion of information carrying relation. In the literature, a conditional probability based approach has been proposed to finding such a relation within...
In database schema transformation, whether the instances of a schema may be recovered from those of another is a question, which seems profound., and yet having not been well investigated. We shed some light on it. In the literature, the work that is closest to this question is the notion of `relevant information capacity', which is concerned with whether one schema may replace another without losing...
The problem of ‘information content’ of an information system appears elusive. In the field of databases, the information content of a database has been taken as the instance of a database. We argue that this view misses two fundamental points. One is a convincing conception of the phenomenon concerning information in databases, especially a properly defined notion of ‘information content’. The other...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.