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Auflistung nach Schlagwort "Quality of service"

1 - 3 von 3
  • Zeitschriftenartikel
    A Reinforcement Learning Based Model for Adaptive Service Quality Management in E-Commerce Websites
    (Business & Information Systems Engineering: Vol. 62, No. 2, 2020) Ghavamipoor, Hoda; Hashemi Golpayegani, S. Alireza
    Providing high-quality service to all users is a difficult and inefficient strategy for e-commerce providers, especially when Web servers experience overload conditions that cause increased response time and request rejections, leading to user frustration and reduced revenue. In an e-commerce system, customer Web sessions have differing values for service providers. These tend to: give preference to customer Web sessions that are likely to bring more profit by providing better service quality. This paper proposes a reinforcement-learning based adaptive e-commerce system model that adapts the service quality level for different Web sessions within the customer's navigation in order to maximize total profit. The e-commerce system is considered as an electronic supply chain which includes a network of basic e- providers used to supply e-commerce services for end customers. The learner agent noted as e-commerce supply chain manager (ECSCM) agent allocates a service quality level to the customer's request based on his/her navigation pattern in the e-commerce Website and selects an optimized combination of service providers to respond to the customer's request. To evaluate the proposed model, a multi agent framework composed of three agent types, the ECSCM agent, customer agent (buyer/browser) and service provider agent, is employed. Experimental results show that the proposed model improves total profits through cost reduction and revenue enhancement simultaneously and encourages customers to purchase from the Website through service quality adaptation.
  • Zeitschriftenartikel
    Database as a Service
    (Datenbank-Spektrum: Vol. 12, No. 1, 2012) Seibold, Michael; Kemper, Alfons
    Heutzutage nutzen bereits viele Unternehmen Cloud Computing für Geschäftsanwendungen wie Customer Relationship Management. Geschäftsanwendungen verwenden typischerweise relationale Datenbanksysteme für die Datenverwaltung. Daher scheint es sinnvoll zu eruieren, inwiefern Datenbanksysteme effizient als Dienst in der Cloud bereitgestellt werden können. Wir vergleichen verschiedene Dienstmodelle für Cloud-Datenbanken und kommen zu dem Schluss, dass Cloud-Datenbankdienste eine eigene Kategorie darstellen: Database as a Service. Darüber hinaus diskutieren wir architektonische Herausforderungen für einen solchen Dienst und gehen insbesondere auf effiziente Mandantenfähigkeit und Quality of Service für gemischte Arbeitslasten ein.
  • Zeitschriftenartikel
    When ‘Just’ is Just Not Enough
    (Business & Information Systems Engineering: Vol. 57, No. 5, 2015) Krämer, Jan; Wiewiorra, Lukas
    Although Internet service providers (ISPs) are technically capable as well as legally allowed to offer non-neutral Internet access services, where the data flows of customers who pay a premium are prioritized over others, such an access service is currently not offered by ISPs. We argue that ISPs are hesitant to tap the price discrimination potential of prioritized Internet access services, because in the context of the ongoing public debate on net neutrality (NN), their customers would consider such differentiation unjust. In a representative survey among German Internet access customers, we find that the customers’ perceptions of justice as well as the framing of the mechanism by which prioritized Internet access is provided are indeed decisive for whether customers would prefer this access regime over NN. In particular, we find that perceptions of distributive and procedural justice influence customers’ choice for non-neutral Internet access. Moreover, customers are more likely to accept a regime that offers an absolute rather than a relative prioritization of data flows.