## digitalmars.D - Contribution to cover C++11 functionality

- Ilya Yaroshenko (14/14) Nov 30 2016 Hi,
- Timon Gehr (4/16) Nov 30 2016 Unrelated question: Why are the samplers called 'random variables'?
- jmh530 (3/8) Nov 30 2016 It also could lead to confusion with distributions over vectors
- Ilya Yaroshenko (10/37) Nov 30 2016 "random distribution" is like "accidental distribution". "random
- Timon Gehr (9/42) Nov 30 2016 I wasn't aware that you want to read your package names like that (Such
- Joseph Rushton Wakeling (24/33) Dec 01 2016 Not really. I would use "randomly chosen distribution" for that.
- Jethro (4/10) Dec 01 2016 There is a problem with `distribution` in that it also has other
- Joseph Rushton Wakeling (6/9) Dec 01 2016 Yes, but in context, is `random distribution` actually ambiguous?

Hi, Mir Random has [1, D] 16 out of 20 [2, C++] random number distributions. Remaining 4 are: 1. piecewise_constant_distribution 2. piecewise_linear_distribution 3. binomial_distribution 4. negative_binomial_distribution [1] http://docs.random.dlang.io/latest/mir_random_variable.html [2] http://en.cppreference.com/w/cpp/concept/RandomNumberDistribution Any takers? Thanks, Ilya

Nov 30 2016

On 30.11.2016 16:22, Ilya Yaroshenko wrote:Hi, Mir Random has [1, D] 16 out of 20 [2, C++] random number distributions. Remaining 4 are: 1. piecewise_constant_distribution 2. piecewise_linear_distribution 3. binomial_distribution 4. negative_binomial_distribution [1] http://docs.random.dlang.io/latest/mir_random_variable.html [2] http://en.cppreference.com/w/cpp/concept/RandomNumberDistribution Any takers? Thanks, IlyaUnrelated question: Why are the samplers called 'random variables'? I'd advice to consistently use the naming convention of 'Discrete' and rename the module to 'mir.random.distributions' or similar.

Nov 30 2016

On Wednesday, 30 November 2016 at 20:36:34 UTC, Timon Gehr wrote:Unrelated question: Why are the samplers called 'random variables'? I'd advice to consistently use the naming convention of 'Discrete' and rename the module to 'mir.random.distributions' or similar.It also could lead to confusion with distributions over vectors or matrices, such as multivariate normal or wishart.

Nov 30 2016

On Wednesday, 30 November 2016 at 20:36:34 UTC, Timon Gehr wrote:On 30.11.2016 16:22, Ilya Yaroshenko wrote:"random distribution" is like "accidental distribution". "random variable" is much more frequently used definition is stats world (stats world != stats packages). Also this better describes what functionality provides module. "Distribution" may be used for PDF or for CDF (or their pair). "probability distribution" and "random variable" looks better (IMHO) then "random distribution", which has another meaning in stats world: a distribution, which was chosen randomly from a class of distributions. For example, variance-mean mixtures. --IlyaHi, Mir Random has [1, D] 16 out of 20 [2, C++] random number distributions. Remaining 4 are: 1. piecewise_constant_distribution 2. piecewise_linear_distribution 3. binomial_distribution 4. negative_binomial_distribution [1] http://docs.random.dlang.io/latest/mir_random_variable.html [2] http://en.cppreference.com/w/cpp/concept/RandomNumberDistribution Any takers? Thanks, IlyaUnrelated question: Why are the samplers called 'random variables'? I'd advice to consistently use the naming convention of 'Discrete' and rename the module to 'mir.random.distributions' or similar.

Nov 30 2016

On 30.11.2016 22:12, Ilya Yaroshenko wrote:On Wednesday, 30 November 2016 at 20:36:34 UTC, Timon Gehr wrote:I wasn't aware that you want to read your package names like that (Such a reading does not seem to be possible for the other mir packages).On 30.11.2016 16:22, Ilya Yaroshenko wrote:"random distribution" is like "accidental distribution"."random variable" is much more frequently used definition is stats world (stats world != stats packages).I'm familiar with statistics, and I agree that the terminology used should be 'right'.Also this better describes what functionality provides module.Not really. The module provides samplers/generators for random variates drawn from certain probability distributions. But even if the module name stays, the /generators/ shouldn't be called "Variable"."Distribution" may be used for PDF or for CDF (or their pair).The distribution is the fundamental thing, the PDF/CDF characterize it.

Nov 30 2016

On Wednesday, 30 November 2016 at 21:12:16 UTC, Ilya Yaroshenko wrote:"random distribution" is like "accidental distribution".Not really. I would use "randomly chosen distribution" for that."random variable" is much more frequently used definition is stats world (stats world != stats packages). Also this better describes what functionality provides module. "Distribution" may be used for PDF or for CDF (or their pair). "probability distribution" and "random variable" looks better (IMHO) then "random distribution", which has another meaning in stats world: a distribution, which was chosen randomly from a class of distributions. For example, variance-mean mixtures. --Ilya"Random variable" is obviously the strict mathematical term, but there are a few reasons why "distribution" might be a better term to use in the API: * many users will not be statisticians; "distribution" is likely to be a more easily-understood term, while "variable" may confuse some users since it may be mixed up with 'variable' as in a program variable; * outside of mathematics many researchers use the term "distribution" quite casually and readily; * the C++11 standard calls these entities distributions, so calling the D functionality by similar names allows for easy understanding and adaptation. (Strictly speaking the C++11 standard uses 'distribution' to refer to functors that take a source of uniformly-distributed random bits as input, and use that to generate variates with other statistical properties.)

Dec 01 2016

On Thursday, 1 December 2016 at 13:42:32 UTC, Joseph Rushton Wakeling wrote:On Wednesday, 30 November 2016 at 21:12:16 UTC, Ilya Yaroshenko wrote:There is a problem with `distribution` in that it also has other meanings. `Random variable` is pretty well established[...]Not really. I would use "randomly chosen distribution" for that. [...]

Dec 01 2016

On Thursday, 1 December 2016 at 15:28:28 UTC, Jethro wrote:There is a problem with `distribution` in that it also has other meanings.Yes, but in context, is `random distribution` actually ambiguous? What might people confuse it with?`Random variable` is pretty well establishedBut is that matching with the strictest of mathematical terminology worth it compared to matching terminology with a well established API standard?

Dec 01 2016