A dictionary coder, also sometimes known as a substitution coder, is a class of lossless data compression algorithms which operate by searching for matches between the text to be compressed and a set of strings contained in a data structure (called the 'dictionary') maintained by the encoder. When the encoder finds such a match, it substitutes a reference to the string's position in the data structure.
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Famous quotes containing the word dictionary:
““Will I have to use a dictionary to read your book?” asked Mrs. Dodypol. “It depends,” says I, “how much you used the dictionary before you read it.””
—Alexander Theroux (b. 1940)