In computer science, lazy deletion refers to a method of deleting elements from a hash table that uses open addressing. In this method, deletions are done by marking an element as deleted, rather than erasing it entirely. Deleted locations are treated as empty when inserting and as occupied during a search. The deleted locations are sometimes referred to as tombstones.[1]
The problem with this scheme is that as the number of delete/insert operations increases, the cost of a successful search increases. To improve this, when an element is searched and found in the table, the element is relocated to the first location marked for deletion that was probed during the search. Instead of finding an element to relocate when the deletion occurs, the relocation occurs lazily during the next search.[2][3]
^
Celis, Pedro; Franco, John (1995), The Analysis of Hashing with Lazy Deletions, Computer Science Department, Indiana University, CiteSeerX 10.1.1.39.9637, Technical Report CS-86-14
^Celis, Pedro; Franco, John (1992), "The analysis of hashing with lazy deletions", Information Sciences, 62 (1–2): 13–26, CiteSeerX 10.1.1.39.9637, doi:10.1016/0020-0255(92)90022-Z
computer science, lazydeletion refers to a method of deleting elements from a hash table that uses open addressing. In this method, deletions are done by marking...
deleted in one operation, marking the slots for deletion and later rebuilding may be more efficient. Lazydeletion – a method of deleting from a hash table using...
other hash table operations. Alternatively, it is possible to use a lazydeletion strategy in which a key–value pair is removed by replacing the value...
insertions of elements and lazydeletion of elements, in logarithmic amortized time per operation. Here, lazydeletion means that a deletion operation is performed...
perfect hashing by Dietzfelbinger et al. uses these concepts, as well as lazydeletion, and is shown in pseudocode below. function Locate(x) is j := h(x) if...
These bounds also hold for linear probing with lazydeletions (i.e., using tombstones for deletions), as long as the hash table is rebuilt (and the tombstones...
Hall, Charlie (November 4, 2022). "The Wordle board game is a joyless, lazy knockoff of the hit digital game". Polygon. Retrieved November 6, 2022. Look...
criticised copyright infringing activities of The Pirate Bay supporters as "lazy and mean". In contrast, Brazilian best-selling author Paulo Coelho has embraced...
the "secure deletion" file attribute, which is supposed to cause overwriting of files upon deletion. A patch to implement secure deletion was proposed...
p. 170. ISBN 3-540-11046-1. Runciman, Colin (1997). "Functional Pearl: Lazy wheel sieves and spirals of primes" (PDF). Journal of Functional Programming...
ran a skit "Lazy Sunday" by The Lonely Island. Besides helping to bolster ratings and long-term viewership for Saturday Night Live, "Lazy Sunday"'s status...
change through mergers. Although considered non-standard and denounced as "lazy sound" (懶音) by purists, the phenomena are widespread and not restricted to...
crowdfunding site on which Rubin said he received over $10,000 per month before deletion. Rubin and Jordan Peterson announced their intent to leave the platform...
with Think, the IBM employee magazine, "Much of my work has come from being lazy. I didn't like writing programs, and so, when I was working on the IBM 701...
shortened ucāṭ ('anxiety'). Geminates behave towards (that is, disallow) [ə]-deletion like clusters do. Gemination can serve as intensification. In some adjectives...
uses them to restructure infrequently. A variant of the CBTree called the LazyCBTree does at most one rotation on each lookup. This is used along with an...
Global Information