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Uses a directed acyclic graph instead of a chain per se: Zcash: Oct 28, 2016 [4] ZEC PoW: Yes uses zero-knowledge proofs for privacy Monero: Apr 18, 2014 XMR PoW: No Yes [1] [4] Bitcoin Gold: BTG PoW: Yes (scripts) No [1] Dogecoin: DOGE PoW: No No [1] Hyperledger Fabric ? Linux Foundation: N/A BFT, PoA: Yes Yes Yes Immediate Account-balance R3 ...
The band-segmented transmission orthogonal frequency-division multiplexing (BST-OFDM) system proposed for Japan (in the ISDB-T, ISDB-TSB, and ISDB-C broadcasting systems) improves upon COFDM by exploiting the fact that some OFDM carriers may be modulated differently from others within the same multiplex.
The linked blocks form a chain. [3] This iterative process confirms the integrity of the previous block, all the way back to the initial block, which is known as the genesis block (Block 0). [28] [29] To assure the integrity of a block and the data contained in it, the block is usually digitally signed. [30]
In computer science, an optimal binary search tree (Optimal BST), sometimes called a weight-balanced binary tree, [1] is a binary search tree which provides the smallest possible search time (or expected search time) for a given sequence of accesses (or access probabilities). Optimal BSTs are generally divided into two types: static and dynamic.
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Fig. 1: A binary search tree of size 9 and depth 3, with 8 at the root. In computer science, a binary search tree (BST), also called an ordered or sorted binary tree, is a rooted binary tree data structure with the key of each internal node being greater than all the keys in the respective node's left subtree and less than the ones in its right subtree.
Most operations on a binary search tree (BST) take time directly proportional to the height of the tree, so it is desirable to keep the height small. A binary tree with height h can contain at most 2 0 +2 1 +···+2 h = 2 h+1 −1 nodes. It follows that for any tree with n nodes and height h: + And that implies:
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