# precision

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Related to Single precision: Double precision

## precision

[pre-sizh´un]
1. the quality of being sharply or exactly defined.
2. in statistics, the extent to which a measurement procedure gives the same results each time it is repeated under identical conditions.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

## pre·ci·sion

(prē-si'zhŭn), Do not confuse this word with accuracy.
1. The quality of being sharply defined or stated; one measure of precision is the number of distinguishable alternatives to a measurement.
2. In statistics, the inverse of the variance of a measurement or estimate.
3. Reproducibility of a quantifiable result; an indication of the random error.
Farlex Partner Medical Dictionary © Farlex 2012

## precision

Lab medicine A measure of test or assay reproducibility–ie, capability of producing the same results when performed on the same specimen under the same conditions; data with high precision has a low standard deviation and a low coefficient of variation. Cf Accuracy.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

## pre·ci·sion

(prē-sizh'ŭn)
1. The quality of being sharply defined or stated; one measure of precision is the number of distinguishable alternatives to a measurement.
2. statistics The inverse of the variance of a measurement or estimate.
3. Reproducibility of a quantifiable result; an indication of the random error.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Caption: FIGURE 2: Performance comparison for single precision on C2050.
In IEEE 754 format, the single precision floating point number can be expressed as,
It is necessary to note that even though 32 blocks of 512 threads and 224 blocks of 32 threads sum up 7,168 execution threads, the second option is slower because it increases the computing time in a 42% for double precision and 54% for single precision. To simplify the writing, if we create n blocks with m threads, using double precision we write {n, m, d) and {n, m, s) in single precision.
Spatially, the signals are similar as both experiments reveal nearly the same locations and spatial scale of the differences, although at 30-h forecast time, significant differences at single precision appear in North Carolina but are absent at double precision.
If you enter 1.4E-45 in a single precision field, 1.401298E-45 will be displayed since that's the closest representation with how floating point binary is done.
Single Precision. From Figure 4(a), we observe that PCSR achieves high performance for all the matrices in the single-precision mode.
For the further investigation of Ant System as Pseudo-Random Number Generator implementation Multiply-With-Carry algorithm in a single precision floating point numbers was considered.
Transfer the coefficient matrix A in single precision packed format to GPU memory.
It is also easy to see that overflow cannot arise during the conversion of 32- or 64-bit integers to floating-point formats, since one of the assumptions of our test tool is that the floating-point format under consideration is at least as large as IEEE single precision. Hence the exponent range is at least [-126, 127].
Today high-end multi core processors based on x86 architecture used in personal computers are able to run simultaneously up to 12 threads achieving floating point performance near of 100 GFLOPs while graphics processing units can process hundreds of threads simultaneously reaching theoretically up to 2700 GFLOPs in single precision operations.
In Version 1.0 of the RISC BLAS, we use a 2-by-2 and a 4-by-2 unrolling in double and single precision, respectively.

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