Communities in DSpace

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  • GAO, Qiao; LEE, Mong Li; DOBBIE, Gillian; ZHONG, Zeng
    Many real world applications need to capture a mix of temporal and non-temporal entities, relationships and attributes. These concepts add complexity when designing database schemas and existing works are unable to capture ...
  • GAO, Qiao; LEE, Mong Li; LING, Tok Wang; DOBBIE, Gillian; ZENG, Zhong
    Querying temporal relational databases is a challenge for non-expert database users, since it requires users to understand the semantics of the database and apply temporal joins as well as temporal conditions correctly in ...
  • HOU, Ruomu; JAHJA, Irvan; LUU, Loi; SAXENA, Prateek; YU, Haifeng
    In a sybil attack, an adversary creates a large number of fake identities/nodes and have them join the system. Computational puzzles have long been investigated as a possible sybil defense: If a node fails to solve the ...
  • JAHJA, Irvan; YU, Haifeng; ZHAO, Yuda
    This paper considers several closely-related problems in synchronous dynamic networks with oblivious adversaries, and proves novel (d + poly(m)) lower bounds on their time complexity (in terms of rounds). Here d is the ...
  • LIU, Qing; BASU, Debabrota; GOEL, Shruti; ABDESSALEM, Talel; BRESSANE, Stéphane (2017-06-06)
    One of the modern pillars of collaborative filtering and recommender systems is collection and exploitation of ratings from users. Likert scale is a psychometric quantifi er of ratings popular among the electronic commerce ...

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