Outline 1. Dissipative channels and pointer bases 2. Two different optimizations in relation to quantum discord 2. 1. Bell-diagonal state 2.2. two-qubit state of two ranks 3. Optimizing pointer bases to achieve maximal condition entropyOutline 1.Dissipative channels and pointer bases 2. Two different optimizations in relation to quantum discord 2.1.Bell-diagonal state 2.2.two-qubit state of two ranks 3. Optimizing pointer bases to achieve maximal condition entropy