INPUT OUTPUT

**Problem:**
A shortest text string *S'* such that *S* can be reconstructed
from *S'*.

**Excerpt from**
The Algorithm Design Manual:
Secondary storage devices fill up quickly on every computer system,
even though their capacity doubles each year.
Decreasing storage prices have only increased interest in data compression,
since there is now more data to compress than ever before.
*Data compression* is the algorithmic problem
of finding alternative, space-efficient encodings for a given data file.
With the rise of computer networks, a new mission for data compression
has arisen, that of increasing the effective bandwidth of networks
by reducing the number of bits before transmission.

Data compression is a problem for which practical people like to invent ad hoc methods, designed for their particular applications. Sometimes these outperform general methods, but often they do not.

Introduction to Algorithms by T. Cormen and C. Leiserson and R. Rivest and C. Stein | Text Compression by Timothy C. Bell, Ian H. Witten, and John Cleary | Introduction to Algorithms by U. Manber |

Data compression: methods and theory by J. Storer | Data Structures and Algorithms by A. Aho and J. Hopcroft and J. Ullman | Graph Algorithms by S. Even |

This page last modified on 2008-07-10 . www.algorist.com