Definition

Noun: A random number generator is a computational or physical process designed to produce a sequence of numbers that lacks any predictable pattern. These numbers are statistically random, meaning each possible number in a given range has an equal probability of being selected, and future numbers cannot be reliably predicted from past ones.

Usage

A random number generator is a tool or algorithm. It is typically used as the subject or object in a sentence. * The security of the encryption system depends on a high-quality random number generator. * For the simulation, we need to configure the random number generator with a specific seed value.

Examples

• The casino's electronic roulette wheel uses a certified random number generator to ensure fair play.
• In cryptography, a random number generator is essential for creating secure keys.
• The researcher noted that the model's output varied because it relied on a stochastic random number generator.

Advanced Usage

• Pseudorandom Number Generator (PRNG): A common type of random number generator that uses a mathematical algorithm and an initial "seed" value to produce a long, non-repeating sequence of numbers that appears random. While deterministic, a good PRNG is sufficient for most applications like simulations and games.
  • Most programming languages have built-in libraries for a pseudorandom number generator.
• Hardware Random Number Generator (HRNG): A random number generator that derives randomness from a physical process, such as electronic noise or radioactive decay. These are used when true, non-deterministic randomness is required, such as in high-security cryptography or lottery drawings.
  • The server is equipped with a hardware random number generator for generating encryption keys.

Variants and Related Words

• RNG: A common abbreviation for random number generator.
  • The game's loot drops are determined by an RNG.
• Randomize (verb): To make random in arrangement or selection, often using a random number generator.
  • The software will randomize the list of participants.

Synonyms

• Randomizer: A general term for any device or algorithm that introduces randomness.
• Stochastic source: A technical term emphasizing the probabilistic nature of the output.

Related Phrases

• Seed a random number generator: To initialize the algorithm with a starting value, which determines the subsequent sequence of "random" numbers it produces.
  • To reproduce the experiment's results, you must seed the random number generator with the same value we used.
• Random number generation: The process or act of creating random numbers.
  • The paper discusses new methods for quantum random number generation.

Noun

1. a routine designed to yield a random number