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- item-1 hasContent massimiliano-ciaramita.
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- item-2 hasContent vanessa-murdock.
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- item-3 hasContent vassilis-plachouras.
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- 648 creator lei-guo.
- 648 creator xin-li.
- 648 creator yihong-eric-zhao.
- 648 type InProceedings.
- 648 label "Tag-based Social Interest Discovery".
- 648 sameAs 648.
- 648 abstract "The success and popularity of social network systems, such as del.icio.us, Facebook, MySpace, and YouTube, have generates many interesting and challenging problems to the research community. Among others, discovering social interests shared by groups of peoples is very important for social network systems. For it helps to connect people with common interests and encourages people to contribute and share more contents for the same interests. The main chanllenge to solving this problem comes from the difficulty of detecting and representing the interest of the users. The existing approaches are all based on the online connections of users and so unable to identify the common interest of users who have no online connections. In this paper, we present a novel, tag-based social interest discovery approach. Our innovation is based on the key observation that in a social network, human beings tend to use righ tags to annotate the contents that they are interested in. Our analysis on a large amount of real-world trace realves that in general, user-generated tags are consistent with the wen content they are attached to while more consice and close to the underdstanding and judgement of human beings about the content. This provides us the foundation of using frequent co-occurrences of user tags as the topics to mark user interests. We then present an architecture, ISID, which discovers the common user interests and then clusters users and their saved URLs into different interestbased clusters. Our evaluation shows that ISID is able to find the online topics of interests for users. In addition, the URLs in the clusters ISID produced have consistently high cosine-similarity and the users in the clusters form an interest-based community no matter whether they have any kind of physical connections in the real world.".
- 648 hasAuthorList authorList.
- 648 hasTopic World_Wide_Web.
- 648 isPartOf proceedings.
- 648 keyword "ISID".
- 648 keyword "delicious".
- 648 keyword "social networks".
- 648 keyword "tag-based interest discovery".
- 648 title "Tag-based Social Interest Discovery".
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- item-1 hasContent xin-li.
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- item-2 hasContent lei-guo.
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- item-3 hasContent yihong-eric-zhao.
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- 652 creator alexander-moshchuk.
- 652 creator cherie-cheung.
- 652 creator henry-m-levy.
- 652 creator roxana-geambasu.
- 652 creator steven-d-gribble.
- 652 type InProceedings.
- 652 label "Organizing and Sharing Distributed Personal Web-Service Data".
- 652 sameAs 652.
- 652 abstract "The migration from desktop applications to Web-based services is scattering personal data across a myriad of Web sites, such as Google, Flickr, YouTube, and Amazon S3. This dispersal poses new challenges for users, making it more difficult for them to: (1) organize, search, and archive their data, much of which is now hosted by Web sites; (2) create heterogeneous, multi-Web-service object collections and share them in a protected way; and (3) manipulate their data with standard applications or scripts. In this paper, we show that a Web-service interface supporting standardized naming, protection, and object-access services can solve these problems and can greatly simplify the creation of a new generation of object-management services for the Web. We describe the implementation of Menagerie, a proof-of-concept prototype that provides these services for Web-based applications. At a high level, Menagerie creates an integrated file and object system from heterogeneous, personal Web-service objects dispersed across the Internet. We present several object-management applications we developed on Menagerie to show the practicality and benefits of our approach.".
- 652 hasAuthorList authorList.
- 652 hasTopic World_Wide_Web.
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- 652 keyword "Web-based services".
- 652 keyword "novel applications".
- 652 keyword "protection".
- 652 keyword "service composition".
- 652 keyword "sharing".
- 652 title "Organizing and Sharing Distributed Personal Web-Service Data".
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- item-1 hasContent roxana-geambasu.
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- item-2 hasContent cherie-cheung.
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- item-3 hasContent alexander-moshchuk.
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- 668 creator bhuvan-bamba.
- 668 creator ling-liu.
- 668 creator peter-pesti.
- 668 creator ting-wang.
- 668 type InProceedings.
- 668 label "Supporting Anonymous Location Queries in Mobile Environments with PrivacyGrid".
- 668 sameAs 668.
- 668 abstract "This paper presents PrivacyGrid − a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique capabilities. First, it provides a location privacy protection preference profile model, called location P3P, which allows mobile users to explicitly define their preferred location privacy requirements in terms of both location hiding measures(e.g., location k-anonymity and location l-diversity) and location service quality measures (e.g., maximum spatial resolution and maximum temporal resolution). Second, it provides fast and effective location cloaking algorithms for providing location k-anonymity and location l-diversity in a mobile environment. We develop dynamic bottom-up and top-down grid cloaking algorithms with the goal of achieving high anonymization success rate and efficiency in terms of both time complexity and maintenance costs. A hybrid approach that carefully combines the strength of both bottom-up and top-down cloaking approaches to further reduce the average anonymization time is also developed. Last but not the least, PrivacyGrid incorporates temporal cloaking into the location cloaking process to further increase the success rate of location anonymization. We also discuss PrivacyGrid mechanisms for anonymous support of location queries. Experimental evaluation shows that the PrivacyGrid approach can provide close to optimal location-k anonymity as defined by per user location P3P without introducing significant performance penalties.".
- 668 hasAuthorList authorList.
- 668 hasTopic World_Wide_Web.
- 668 isPartOf proceedings.
- 668 keyword "Anonymous location queries".
- 668 keyword "Dynamic spatio-temporal cloaking".
- 668 keyword "Evaluation metrics".
- 668 keyword "Location P3P".