What does HWLD mean in UNCLASSIFIED
HWLD stands for Hashing with Lazy Deletion, which is an algorithm used to delete entries within a hash table. The primary purpose of HWLD is to add and remove elements from the hash table in a manner that ensures its integrity – meaning the data stored in the table remains consistent over time. It does so by using a ‘lazy’ approach, in which deleted elements are not immediately removed from the table, but rather marked as deleted until they can be permanently removed. This process helps preserve the integrity of the hash table by ensuring that no new entries overwrite previously deleted items, and it also helps reduce the amount of space taken up by empty entries or invalid keys.
HWLD meaning in Unclassified in Miscellaneous
HWLD mostly used in an acronym Unclassified in Category Miscellaneous that means hashing with lazy deletion
Shorthand: HWLD,
Full Form: hashing with lazy deletion
For more information of "hashing with lazy deletion", see the section below.
Explanation
A hash table is a data structure which stores key-value pairs efficiently; it functions essentially like an array, except with more efficient lookup times. To achieve this efficiency, each key is hashed to generate an address – usually referred to as an index – and the associated value stored at that location. When using HWLD, when an element needs to be deleted from the table instead of actually removing it from memory, a tag is set to mark it as deleted while leaving it in-place. This way if a new entry submits a key which corresponds to that same index, instead of overwriting what was previously there they will instead be given another address. This method ensures two important things – firstly that an already existing entry cannot be accidentally overwritten when adding new ones; and secondly that invalid or duplicate keys will not occupy valuable storage space.
Essential Questions and Answers on hashing with lazy deletion in "MISCELLANEOUS»UNFILED"
In summary, HWLD (Hashing with Lazy Deletion) is an algorithm for deleting elements from a hash table without compromising its integrity or wasting valuable storage space. By marking entries as ‘deleted’ rather than physically removing them from memory, HWLD prevents accidental overwrites or duplicates while still allowing for quick access times on valid keys. While some additional steps must be taken periodically to finally remove these marked elements from memory, this technique is generally faster and more reliable than other methods of removal.(END)