Browsing by Author "Hadjieleftheriou, Marios"

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Browsing by Author "Hadjieleftheriou, Marios"

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  • Authenticated Index Structures for Aggregation Queries in Outsourced Databases
    Li, Feifei; Hadjieleftheriou, Marios; Kollios, George; Reyzin, Leonid (Boston University Computer Science Department, 2006-07-20)
    In an outsourced database system the data owner publishes information through a number of remote, untrusted servers with the goal of enabling clients to access and query the data more efficiently. As clients cannot trust ...
  • Authenticated Index Structures for Outsourced Database Systems
    Li, Feifei; Hadjieleftheriou, Marios; Kollios, George; Reyzin, Leonid (Boston University Computer Science Department, 2006-04-22)
    In outsourced database (ODB) systems the database owner publishes its data through a number of remote servers, with the goal of enabling clients at the edge of the network to access and query the data more efficiently. As ...
  • Query-Sensitive Embeddings
    Athitsos, Vassilis; Hadjieleftheriou, Marios; Kollios, George; Sclaroff, Stan (Boston University Computer Science Department, 2005-03-16)
    A common problem in many types of databases is retrieving the most similar matches to a query object. Finding those matches in a large database can be too slow to be practical, especially in domains where objects are ...
  • Robust Sketching and Aggregation of Distributed Data Streams
    Hadjieleftheriou, Marios; Byers, John W.; Kollios, John (Boston University Computer Science Department, 2005-03-16)
    The data streaming model provides an attractive framework for one-pass summarization of massive data sets at a single observation point. However, in an environment where multiple data streams arrive at a set of distributed ...