منابع مشابه
Cuckoo Hashing
We present a simple and e cient dictionary with worst case constant lookup time, equaling the theoretical performance of the classic dynamic perfect hashing scheme of Dietzfelbinger et al. (Dynamic perfect hashing: Upper and lower bounds. SIAM J. Comput., 23(4):738 761, 1994). The space usage is similar to that of binary search trees, i.e., three words per key on average. The practicality of th...
متن کاملAn Overview of Cuckoo Hashing
Cuckoo Hashing is a technique for resolving collisions in hash tables that produces a dictionary with constant-time worst-case lookup and deletion operations as well as amortized constant-time insertion operations. First introduced by Pagh in 2001 [3] as an extension of a previous static dictionary data structure, Cuckoo Hashing was the first such hash table with practically small constant fact...
متن کاملAdaptive Cuckoo Filters
We introduce the adaptive cuckoo filter (ACF), a data structure for approximate set membership that extends cuckoo filters by reacting to false positives, removing them for future queries. As an example application, in packet processing queries may correspond to flow identifiers, so a search for an element is likely to be followed by repeated searches for that element. Removing false positives ...
متن کاملCuckoo hashing: Further analysis
We consider cuckoo hashing as proposed by Pagh and Rodler in 2001. We show that the expected construction time of the hash table is O(n) as long as the two open addressing tables are each of size at least (1 + ǫ)n, where ǫ > 0 and n is the number of data points. Slightly improved bounds are obtained for various probabilities and constraints. The analysis rests on simple properties of branching ...
متن کاملCuckoo Hashing for Undergraduates
This lecture note presents and analyses two simple hashing algorithms: “Hashing with Chaining”, and “Cuckoo Hashing”. The analysis uses only very basic (and intuitively understandable) concepts of probability theory, and is meant to be accessible even for undergraduates taking their first algorithms course.
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ژورنال
عنوان ژورنال: Nature
سال: 1876
ISSN: 0028-0836,1476-4687
DOI: 10.1038/014250a0