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On the parameterized complexity of approximate counting. (English) Zbl 1234.68121
Summary: We study the parameterized complexity of approximating the parameterized counting problems contained in the class #$$W[P]$$, the parameterized analogue of #$$P$$. We prove a parameterized analogue of a famous theorem of Stockmeyer claiming that approximate counting belongs to the second level of the polynomial hierarchy.

##### MSC:
 68Q15 Complexity classes (hierarchies, relations among complexity classes, etc.) 68Q17 Computational difficulty of problems (lower bounds, completeness, difficulty of approximation, etc.)
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##### References:
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