hybrid.utils.select_random_subgraph¶

select_random_subgraph(bqm, n)[source]¶

Select randomly n variables of the specified binary quadratic model.

Parameters:	bqm (`dimod.BinaryQuadraticModel`) – Binary quadratic model (BQM). n (int) – Number of requested variables. Must be between 0 and len(bqm).
Returns:	n variables selected randomly from the BQM.
Return type:	list

Examples

This example returns 2 variables of a 4-variable BQM.

>>> import dimod
>>> bqm = dimod.BQM({}, {'ab': 0, 'bc': 1, 'cd': 2}, 0, 'BINARY')
>>> select_random_subgraph(bqm, 2)      # doctest: +SKIP
['d', 'b']