PATRICIA
PATRICIA - Practical Algorithm to Retrieve Information Coded in Alphanumeric, D.R.Morrison (1968). A PATRICIA tree is related to a Trie. The problem with Tries is that when the set of keys is sparse, i.e. when the actual keys form a small subset of the set of potential keys, as is very often the case, many (most) of the internal nodes in the Trie have only one descendant. This causes the Trie to h
Radix tree - Wikipedia
An example of a radix tree In computer science, a radix tree (also radix trie or compact prefix tree or compressed trie) is a data structure that represents a space-optimized trie (prefix tree) in which each node that is the only child is merged with its parent. The result is that the number of children of every internal node is at most the radix r of the radix tree, where r = 2x for some integer
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Patricia-Trie – Wikipedia
