The Oracle RDBMS recently introduced an innovative compression technique for reducing the size of relational tables. By using a compression algorithm specifically designed for relational data, Oracle is able to compress data much more effectively than standard compression techniques. More significantly, unlike other compression techniques, Oracle incurs virtually no performance penalty for SQL ...

The advent of massive datasets and the consequent design of high-performing distributed storage systems—such as BigTable by Google [7], Cassandra by Facebook [5], Hadoop by Apache—have reignited the interest of the scientific and engineering community towards the design of lossless data compressors which achieve effective compression ratio and very efficient decompression speed. Lempel-Ziv’s LZ...

The algorithm for on-board compression on the fly of ACS data is briefly reviewed and its benefits discussed. On the basis of this discussion we recommend a compression strategy and briefly list a plan to establish the optimal compression factor. Once the planned test is completed we will recommend an implementation strategy for compression during SMOV and the following cycles.

Matt Mahoney Copyright (C) 2010, Ocarina Networks. You are permitted to copy and distribute material from this book provided (1) any material you distribute includes this license, (2) the material is not modified, and (3) you do not charge a fee or require any other considerations for copies or for any works that incorporate material from this book. These restrictions do not apply to normal "fa...

This paper surveys a variety of data compression methods spanning almost forty years of research, from the work of Shannon, Fano and Hu man in the late 40's to a technique developed in 1986. The aim of data compression is to reduce redundancy in stored or communicated data, thus increasing e ective data density. Data compression has important application in the areas of le storage and distribut...

This paper presents a new data compression method for current loop transmitters. In this method, the 4-20 mA current domain is divided into some equal pieces that are used for distinct data domain with a constant relative resolution, resulting in widening the signal span. This technique eliminated the need for high resolution ADC’s or DAC’s in communication of 4-20mA current loop signals. Furth...