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- Diehard_tests abstract "The diehard tests are a battery of statistical tests for measuring the quality of a random number generator. They were developed by George Marsaglia over several years and first published in 1995 on a CD-ROM of random numbers.These are the tests: Birthday spacings: Choose random points on a large interval. The spacings between the points should be asymptotically exponentially distributed. The name is based on the birthday paradox. Overlapping permutations: Analyze sequences of five consecutive random numbers. The 120 possible orderings should occur with statistically equal probability. Ranks of matrices: Select some number of bits from some number of random numbers to form a matrix over {0,1}, then determine the rank of the matrix. Count the ranks. Monkey tests: Treat sequences of some number of bits as "words". Count the overlapping words in a stream. The number of "words" that don't appear should follow a known distribution. The name is based on the infinite monkey theorem. Count the 1s: Count the 1 bits in each of either successive or chosen bytes. Convert the counts to "letters", and count the occurrences of five-letter "words". Parking lot test: Randomly place unit circles in a 100 x 100 square. If the circle overlaps an existing one, try again. After 12,000 tries, the number of successfully "parked" circles should follow a certain normal distribution. Minimum distance test: Randomly place 8,000 points in a 10,000 x 10,000 square, then find the minimum distance between the pairs. The square of this distance should be exponentially distributed with a certain mean. Random spheres test: Randomly choose 4,000 points in a cube of edge 1,000. Center a sphere on each point, whose radius is the minimum distance to another point. The smallest sphere's volume should be exponentially distributed with a certain mean. The squeeze test: Multiply 231 by random floats on [0,1) until you reach 1. Repeat this 100,000 times. The number of floats needed to reach 1 should follow a certain distribution. Overlapping sums test: Generate a long sequence of random floats on [0,1). Add sequences of 100 consecutive floats. The sums should be normally distributed with characteristic mean and sigma. Runs test: Generate a long sequence of random floats on [0,1). Count ascending and descending runs. The counts should follow a certain distribution. The probabilty of "runs"(I.e exceptionally high sum of numbers or exceptionally low sum of numbers) would appear with similar if the same frequencies at all levels of the range in a visible logarithmically uniform distribution. The craps test: Play 200,000 games of craps, counting the wins and the number of throws per game. Each count should follow a certain distribution. "Letting it ride" enhances this effect, regardless of the number of times one "lets it ride", so long as the set number (I.e 2) is the same throughout the generation, the well known craps probabilities of wins and loss would still be visible in the data received.".
- Diehard_tests wikiPageExternalLink cdrom.
- Diehard_tests wikiPageExternalLink dieharder.php.
- Diehard_tests wikiPageExternalLink diehard.
- Diehard_tests wikiPageID "2167005".
- Diehard_tests wikiPageRevisionID "605791139".
- Diehard_tests hasPhotoCollection Diehard_tests.
- Diehard_tests subject Category:Random_number_generation.
- Diehard_tests comment "The diehard tests are a battery of statistical tests for measuring the quality of a random number generator. They were developed by George Marsaglia over several years and first published in 1995 on a CD-ROM of random numbers.These are the tests: Birthday spacings: Choose random points on a large interval. The spacings between the points should be asymptotically exponentially distributed. The name is based on the birthday paradox.".
- Diehard_tests label "Diehard tests".
- Diehard_tests label "Тесты diehard".
- Diehard_tests sameAs m.06rtyj.
- Diehard_tests sameAs Q4456486.
- Diehard_tests sameAs Q4456486.
- Diehard_tests wasDerivedFrom Diehard_tests?oldid=605791139.
- Diehard_tests isPrimaryTopicOf Diehard_tests.