Service provider

About: Service provider is a research topic. Over the lifetime, 55107 publications have been published within this topic receiving 894381 citations. The topic is also known as: external service provider & internal service provider.

Generating Private Recommendations Efficiently Using Homomorphic Encryption and Data Packing

Abstract: Recommender systems have become an important tool for personalization of online services. Generating recommendations in online services depends on privacy-sensitive data collected from the users. Traditional data protection mechanisms focus on access control and secure transmission, which provide security only against malicious third parties, but not the service provider. This creates a serious privacy risk for the users. In this paper, we aim to protect the private data against the service provider while preserving the functionality of the system. We propose encrypting private data and processing them under encryption to generate recommendations. By introducing a semitrusted third party and using data packing, we construct a highly efficient system that does not require the active participation of the user. We also present a comparison protocol, which is the first one to the best of our knowledge, that compares multiple values that are packed in one encryption. Conducted experiments show that this work opens a door to generate private recommendations in a privacy-preserving manner.

Investigating interactive effects in the theory of planned behavior in a service‐provider switching context

Abstract: This study examines whether a model of the theory of planned behavior (Ajzen, 1985) with interaction terms can adequately explain customer service provider switching behavior. Results from a survey of mortgage customers suggest that it does. Interactions between perceived behavioral control (PBC) and intentions, between perceived behavioral control and attitude, and between attitude and subjective norms were all significant predictors of switching intentions. Implications for the theory of planned behavior and its use in services marketing are discussed. © 2002 Wiley Periodicals, Inc.

Encryption devices for use in a conditional access system

Abstract: A cable television system provides conditional access to services. The cable television system includes a headend from which service 'instances', or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.

Method for confirming transactions

Abstract: Method with which a mobile user can confirm a transaction with a service provider, in which: an offer of said service provider is reproduced with the mobile device of said mobile user, said mobile user selects said offer with input means of his mobile device, a transaction confirmation is automatically forwarded from said mobile device to an authentication server, a plurality of transactions between different mobile users and different service providers being stored in said authentication server, and said service provider retrieves said confirmation from said authentication server.

Forward error correction strategies for media streaming over wireless networks

Abstract: The success of next-generation mobile communication systems depends on the ability of service providers to engineer new added-value multimedia-rich services, which impose stringent constraints on the underlying delivery/transport architecture. The reliability of real-time services is essential for the viability of any such service offering. The sporadic packet loss typical of wireless channels can be addressed using appropriate techniques such as the widely used packet-level forward error correction. In designing channel-aware media streaming applications, two interrelated and challenging issues should be tackled: accuracy of characterizing channel fluctuations and effectiveness of application-level adaptation. The first challenge requires thorough insight into channel fluctuations and their manifestations at the application level, while the second concerns the way those fluctuations are interpreted and dealt with by adaptive mechanisms such as FEC. In this article we review the major issues that arise when designing a reliable media streaming system for wireless networks.