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ESA
2007
Springer

Finding Frequent Elements in Non-bursty Streams

14 years 5 months ago
Finding Frequent Elements in Non-bursty Streams
We present an algorithm for finding frequent elements in a stream where the arrivals are not bursty. Depending on the amount of burstiness in the stream our algorithm detects elements with frequency at least t with space between ˜O(F1/t2 ) and ˜O(F2/t2 ) where F1 and F2 are the first and the second frequency moments of the stream respectively. The latter space complexity is achieved when the stream is completely bursty; i.e., most elements arrive in contiguous groups, and the former is attained when the arrival order is random. Our space complexity is ˜O(αF1/t2 ) where α is a parameter that captures the burstiness of a
Rina Panigrahy, Dilys Thomas
Added 07 Jun 2010
Updated 07 Jun 2010
Type Conference
Year 2007
Where ESA
Authors Rina Panigrahy, Dilys Thomas
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