An Improved Frequent Items Algorithm with Applications to Web Caching

Kevin Chen and Satish Rao

EECS Department
University of California, Berkeley
Technical Report No. UCB/CSD-05-1383
2005

http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/CSD-05-1383.pdf

We present a simple, intuitive algorithm for the problem of finding an approximate list of the k most frequent items in a data stream when the item frequencies are Zipf-distributed. Our result improves the previous result of Charikar, Chen and Farach-Colton for the same problem when the Zipf parameter is low. We also highlight an application of the algorithm to web caching that may be of practical interest.


BibTeX citation:

@techreport{Chen:CSD-05-1383,
    Author = {Chen, Kevin and Rao, Satish},
    Title = {An Improved Frequent Items Algorithm with Applications to Web Caching},
    Institution = {EECS Department, University of California, Berkeley},
    Year = {2005},
    URL = {http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/5225.html},
    Number = {UCB/CSD-05-1383},
    Abstract = {We present a simple, intuitive algorithm for the problem of finding an approximate list of the <i>k</i> most frequent items in a data stream when the item frequencies are Zipf-distributed. Our result improves the previous result of Charikar, Chen and Farach-Colton for the same problem when the Zipf parameter is low. We also highlight an application of the algorithm to web caching that may be of practical interest.}
}

EndNote citation:

%0 Report
%A Chen, Kevin
%A Rao, Satish
%T An Improved Frequent Items Algorithm with Applications to Web Caching
%I EECS Department, University of California, Berkeley
%D 2005
%@ UCB/CSD-05-1383
%U http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/5225.html
%F Chen:CSD-05-1383