Based on the reduced file size and improve the accuracy of the idea of points, in this paper we take about eliminate redundant algorithm.

Basic types of contour intersection of chinese characters and the relative redundancy removal algorithm(RRA) by vertex traversal are presented,and RRA processing flow is depicted based on basic RRA rules.

In order to remove multiplicative noise in observation a new method for multiplicative noise reduction based on homomorphic transform and blind source separation(BSS) was proposed,using redundancy reduction of independent component analysis(ICA).

In order to remove noise from observed signal, a new denoising method based on the redundancy reduction capability of the independent component analysis (ICA) was proposed.

Multi-feature correlation redundance elimination of intrusion event;

Eliminating R_TTL circle:a solution to reduce redundant messages in Gnutella network;

But in the process of its development, Gnutella network s drawbacks are exposed: bad scalability, large numbers of redundant messages.

Focusing on the query algorithm of XML data for path expressions and based on the marked suffix tree (MST), an optimizing algorithm is proposed for the common sub-queries in XML data for regular path expressions to improve the querying efficiency of path expressions through the redundancy eliminating technique.