Aggregation-Aware Compression of Probabilistic Streaming Time Series - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

Aggregation-Aware Compression of Probabilistic Streaming Time Series

(1) , (1)
1
Reza Akbarinia
Florent Masseglia

Abstract

In recent years, there has been a growing interest for probabilistic data management. We focus on probabilistic time series where a main characteristic is the high volumes of data, calling for efficient compression techniques. To date, most work on probabilistic data reduction has provided synopses that minimize the error of representation w.r.t. the original data. However, in most cases, the compressed data will be meaningless for usual queries involving aggregation operators such as SUM or AVG. We propose PHA (Probabilistic Histogram Aggregation), a compression technique whose objective is to minimize the error of such queries over compressed probabilistic data. We incorporate the aggregation operator given by the end-user directly in the compression technique, and obtain much lower error in the long term. We also adopt a global error aware strategy in order to manage large sets of probabilistic time series, where the available memory is carefully balanced between the series, according to their individual variability.
Fichier principal
Vignette du fichier
pha_mldm.pdf (974.71 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

lirmm-01162366 , version 1 (10-06-2015)

Identifiers

Cite

Reza Akbarinia, Florent Masseglia. Aggregation-Aware Compression of Probabilistic Streaming Time Series. MLDM: Machine Learning and Data Mining, Jul 2015, Hamburg, Germany. pp.232-247, ⟨10.1007/978-3-319-21024-7_16⟩. ⟨lirmm-01162366⟩
204 View
367 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More