optimal trie - definizione. Che cos'è optimal trie
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Cosa (chi) è optimal trie - definizione

CLASS OF MATHEMATICAL PROBLEMS CONCERNED WITH CHOOSING AN OPTIMAL TIME TO TAKE A PARTICULAR ACTION
Optimal Stopping; Optimal Stopping problem

Bitwise trie with bitmap         
  • A trie with the keys "07" and "42". Note that the node labels like "0" or "07" are just added for readability and are not actually stored in the nodes.
  • Trie node with bitmap that marks valid child branches.
Draft:Bitwise trie with bitmap; Array mapped trie
A bitwise trie is a special form of trie where each node with its child-branches represents a bit sequence of one or more bits of a key. A bitwise trie with bitmap uses a bitmap to denote valid child branches.
HAT-trie         
Hat trie; Wikipedia talk:Articles for creation/HAT-trie
The HAT-trie is a type of radix trie that uses array nodes to collect individual key–value pairs under radix nodes and hash buckets into an associative array. Unlike a simple hash table, HAT-tries store key–value in an ordered collection.
Radix tree         
  • 313x313px
DATA STRUCTURE THAT REPRESENTS A SPACE-OPTIMIZED TRIE IN WHICH EACH NODE THAT IS THE ONLY CHILD IS MERGED WITH ITS PARENT
Patricia trie; Patricia trees; Patricia tree; Patricia-trie; PATRICIA; Crit bit tree; Radix trie; Crit bit trie; Crit-bit tree; Radixtree; Compact prefix tree; PATRICIA trie; PATRICIA 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 of the radix tree, where is a positive integer and a power of 2, having ≥ 1.

Wikipedia

Optimal stopping

In mathematics, the theory of optimal stopping or early stopping is concerned with the problem of choosing a time to take a particular action, in order to maximise an expected reward or minimise an expected cost. Optimal stopping problems can be found in areas of statistics, economics, and mathematical finance (related to the pricing of American options). A key example of an optimal stopping problem is the secretary problem. Optimal stopping problems can often be written in the form of a Bellman equation, and are therefore often solved using dynamic programming.