Efficient coding of information: Huffman coding
نویسندگان
چکیده
منابع مشابه
Lecture 8 : Source Coding Theorem , Huffman coding
Fix a random variable X having as its possible values entries of a set X . Let Σ∗ denote the set of strings whose characters are taken from an alphabet Σ. In the case Σ has two elements, we can interpret elements of Σ∗ as bit strings, for example. Let Y denote a set of target symbols and C denote a code, a function of the form X → Y∗. The extension of a symbol code, a code of the form C : X → Y...
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Given nonnegative weights (wr, . . . , w,,), the well-known algorithm of Huffman [2] can be used to construct a binary tree with n external nodes and n 1 internal nodes, where the external nodes are labeled with the weights (wr, . . . , w,) in some order. Huffman’s tree has the minimum value of WJ, + * * . + w,,l, over all such binary trees, where lj is the level at which wj occurs in the tree....
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ژورنال
عنوان ژورنال: Resonance
سال: 2006
ISSN: 0971-8044,0973-712X
DOI: 10.1007/bf02837275