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RandomSeeding
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RandomSeeding

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is an option that specifies what seeding of pseudorandom generators should be done inside the operation of a function.

Details

Examples

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Basic Examples  (1)Summary of the most common use cases

Give an explicit random seeding for FindInstance:

In[1]:=1
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https://wolfram.com/xid/0b0lemy6fxm-gxqjps
Out[1]=1

The result will always be the same with this seeding:

In[2]:=2
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https://wolfram.com/xid/0b0lemy6fxm-kxy2w2
Out[2]=2

With the default Automatic seeding, a different seed is used for each instance:

In[3]:=3
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https://wolfram.com/xid/0b0lemy6fxm-blvxcr
Out[3]=3
In[4]:=4
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https://wolfram.com/xid/0b0lemy6fxm-kd3rod
Out[4]=4

Scope  (1)Survey of the scope of standard use cases

Use externally seeded random numbers for FindInstance:

In[1]:=1
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https://wolfram.com/xid/0b0lemy6fxm-c43e2u
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/0b0lemy6fxm-b58cni
Out[2]=2

Repeated evaluations with no intervening use of randomness will give the same result:

In[3]:=3
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https://wolfram.com/xid/0b0lemy6fxm-zzmmfm
Out[3]=3

If randomness is requested between evaluations, the state will change:

In[4]:=4
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https://wolfram.com/xid/0b0lemy6fxm-frk80z
Out[4]=4
In[5]:=5
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https://wolfram.com/xid/0b0lemy6fxm-jzsju
Out[5]=5

RandomSeeding->Inherited causes FindInstance to effectively use BlockRandom:

In[6]:=6
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https://wolfram.com/xid/0b0lemy6fxm-e46uv6
Out[6]=6
In[7]:=7
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https://wolfram.com/xid/0b0lemy6fxm-jbh1rc
Out[7]=7

Properties & Relations  (1)Properties of the function, and connections to other functions

RandomSeeding->Inherited uses the current random state:

In[1]:=1
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https://wolfram.com/xid/0b0lemy6fxm-k4t6z8
In[2]:=2
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https://wolfram.com/xid/0b0lemy6fxm-mh4zt7
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/0b0lemy6fxm-kkligz
Out[3]=3

RandomSeeding->Automatic completely ignores the current random state:

In[4]:=4
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https://wolfram.com/xid/0b0lemy6fxm-w9pclm
In[5]:=5
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https://wolfram.com/xid/0b0lemy6fxm-ursej3
Out[5]=5
In[6]:=6
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https://wolfram.com/xid/0b0lemy6fxm-d88hxr
Out[6]=6
Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).
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Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).

Text

Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).

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Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).

CMS

Wolfram Language. 2017. "RandomSeeding." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2020. https://reference.wolfram.com/language/ref/RandomSeeding.html.

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Wolfram Language. 2017. "RandomSeeding." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2020. https://reference.wolfram.com/language/ref/RandomSeeding.html.

APA

Wolfram Language. (2017). RandomSeeding. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RandomSeeding.html

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Wolfram Language. (2017). RandomSeeding. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RandomSeeding.html

BibTeX

@misc{reference.wolfram_2025_randomseeding, author="Wolfram Research", title="{RandomSeeding}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/RandomSeeding.html}", note=[Accessed: 26-March-2025 ]}

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@misc{reference.wolfram_2025_randomseeding, author="Wolfram Research", title="{RandomSeeding}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/RandomSeeding.html}", note=[Accessed: 26-March-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_randomseeding, organization={Wolfram Research}, title={RandomSeeding}, year={2020}, url={https://reference.wolfram.com/language/ref/RandomSeeding.html}, note=[Accessed: 26-March-2025 ]}

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@online{reference.wolfram_2025_randomseeding, organization={Wolfram Research}, title={RandomSeeding}, year={2020}, url={https://reference.wolfram.com/language/ref/RandomSeeding.html}, note=[Accessed: 26-March-2025 ]}