What is meant by Bloom filter?

A Bloom filter is a space-efficient probabilistic data structure, conceived by Burton Howard Bloom in 1970, that is used to test whether an element is a member of a set.

Why Bloom filter is used?

A Bloom filter is a space-efficient probabilistic data structure that is used to test whether an element is a member of a set. For example, checking availability of username is set membership problem, where the set is the list of all registered username.

What is Bloom filter in Blockchain?

Transaction bloom filtering is a method that allows lightweight clients to limit the amount of transaction data they receive from full nodes to only those transactions that affect their wallet (plus a configurable amount of additional transactions to generate plausible deniability about which transactions belong to the …

What is Bloom filter in IoT?

Our scheme uses Bloom filter to store the provenance information to reduce the storage requirement significantly at the resource constrained IoT devices. We have utilised the solution provided by [13] to outsource the attribute-based encryption to lessen the load of encryption and decryption from the IoT nodes.

Which applications use Bloom filter?

The applications of Bloom Filter are:

  • Weak password detection.
  • Internet Cache Protocol.
  • Safe browsing in Google Chrome.
  • Wallet synchronization in Bitcoin.
  • Hash based IP Traceback.
  • Cyber security like virus scanning.

How is Bloom filter space efficient?

The advantage of a Bloom filter over the established dictionary structures is space efficiency. A Bloom filter needs only a constant number of bits per (prospective) element, while keeping the FPR constant, independent of the size of the elements’ universe.

What is Bloom filter in Oracle?

Bloom filters were first implemented in Oracle 10gR2 to reduce the rows between producers and consumers when processing joins with parallel operations. Oracle 11gR1 allowed Bloom filters to be used to implement join-filter pruning. A Bloom filter is an array that helps to indicate if an item is in a set.