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    KDD
    2009
    ACM
    152views Data Mining» more  KDD 2009»
    TANGENT: a novel, 'Surprise me', recommendation algorithm
    14 years 8 months ago
    TANGENT: a novel, 'Surprise me', recommendation algorithm
    Download  www.cs.cmu.edu
    Most of recommender systems try to find items that are most relevant to the older choices of a given user. Here we focus on the "surprise me" query: A user may be bored ...
    Kensuke Onuma, Hanghang Tong, Christos Faloutsos
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    KDD
    2009
    ACM
    173views Data Mining» more  KDD 2009»
    Constant-factor approximation algorithms for identifying dynamic communities
    14 years 8 months ago
    Constant-factor approximation algorithms for identifying dynamic communities
    Download  compbio.cs.uic.edu
    We propose two approximation algorithms for identifying communities in dynamic social networks. Communities are intuitively characterized as "unusually densely knit" sub...
    Chayant Tantipathananandh, Tanya Y. Berger-Wolf
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    PODS
    2009
    ACM
    130views Database» more  PODS 2009»
    Secondary indexing in one dimension: beyond b-trees and bitmap indexes
    14 years 8 months ago
    Secondary indexing in one dimension: beyond b-trees and bitmap indexes
    Download  www.itu.dk
    Let be a finite, ordered alphabet, and consider a string x = x1x2 . . . xn n . A secondary index for x answers alphabet range queries of the form: Given a range [al, ar] , retu...
    Rasmus Pagh, Srinivasa Rao Satti
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    SIGMOD
    2009
    ACM
    220views Database» more  SIGMOD 2009»
    Keyword search in databases: the power of RDBMS
    14 years 7 months ago
    Keyword search in databases: the power of RDBMS
    Download  www.se.cuhk.edu.hk
    Keyword search in relational databases (RDBs) has been extensively studied recently. A keyword search (or a keyword query) in RDBs is specified by a set of keywords to explore the...
    Lu Qin, Jeffrey Xu Yu, Lijun Chang
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    SIGMOD
    2009
    ACM
    213views Database» more  SIGMOD 2009»
    Dictionary-based order-preserving string compression for main memory column stores
    14 years 7 months ago
    Dictionary-based order-preserving string compression for main memory column stores
    Download  www.ecc.ethz.ch
    Column-oriented database systems [19, 23] perform better than traditional row-oriented database systems on analytical workloads such as those found in decision support and busines...
    Carsten Binnig, Stefan Hildenbrand, Franz Fär...
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