4 search results - page 1 / 1 » Lower Bounds for Quantile Estimation in Random-Order and Mul... |
ICALP
2007
Springer
13 years 10 months ago
2007
Springer
We present lower bounds on the space required to estimate the quantiles of a stream of numerical values. Quantile estimation is perhaps the most studied problem in the data stream ...
ICALP
2009
Springer
14 years 5 months ago
2009
Springer
Estimating frequency moments and Lp distances are well studied problems in the adversarial data stream model and tight space bounds are known for these two problems. There has been...
ESCAPE
2007
Springer
13 years 10 months ago
2007
Springer
We present deterministic sub-linear space algorithms for a number of problems over update data streams, including, estimating frequencies of items and ranges, finding approximate ...
ICDT
2009
ACM
14 years 5 months ago
2009
ACM
We continue the study of approximating the number of distinct elements in a data stream of length n to within a (1? ) factor. It is known that if the stream may consist of arbitra...