Examples of data compaction methods are the use of fixed-tolerance bands, variable-tolerance bands, slope-keypoints, sample changes, curve patterns, curve fitting, variable-precision coding, frequency analysis, and probability analysis.
[further explanation needed] The use of acronyms in texting is an everyday example.
The number of bits required to transmit and store "WYSIWYG" (What You See Is What You Get) is reduced from its expanded equivalent (7 characters vs 28).
The largest known as of February 2013[update] is over 17 million digits long but it is represented as M57885161 in a much more compacted form.
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