1,721,087 research outputs found

    A Uniform Framework for Regulating Service Access and Information Release on the Web

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    The widespread use of Internet-based services is increasing the amount of information (such as user profiles) that clients are required to disclose. This information demand is necessary for regulating access to services, and functionally convenient (e.g., to support service customization), but it has raised privacy-related concerns which, if not addressed, may affect the users disposition to use network services. At the same time, servers need to regulate service access without disclosing entirely the details of their access control policy. There is therefore a pressing need for privacy-aware techniques to regulate access to services open to the network. We propose an approach for regulating service access and information disclosure on the Web. The approach consists of a uniform formal framework to formulate - and reason about - both service access and information disclosure constraints. It also provides a means for parties to communicate their requirements while ensuring that no private information be disclosed and that the communicated requirements are correct with respect to the constraints

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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