在計算複雜度理論內,PP是一個複雜度類,包含可以在多項式時間裡面以概率圖靈機解決,無論輸入如何錯誤率均小於1/2的決定型問題。PP這個縮寫即代表了概率多項式時間(probabilistic polynomial time)。這個複雜度類是由Gill於1977年定義[1]。
- ^ J. Gill, "Computational complexity of probabilistic Turing machines." SIAM Journal on Computing, 6 (4), pp. 675–695, 1977.
- Papadimitriou, C. chapter 11. Computational Complexity. Addison-Wesley. 1994. .
- Allender, E. A note on uniform circuit lower bounds for the counting hierarchy. Proceedings 2nd International Computing and Combinatorics Conference (COCOON). Lecture Notes in Computer Science 1090. Springer-Verlag. 1996: 127–135. .
- Burtschick, Hans-Jörg; Vollmer, Heribert. Lindström Quantifiers and Leaf Language Definability. 1998. doi:10.1142/S0129054198000180. ECCC TR96-005. .
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