Base on this, this paper generally provides the mathematical definition of flexibility, builds a model of flexible decision-making, analyzes the values of range and response flexibilities, and develops the comparative statics of optimal decisions with respect to information observed.

This paper investigates the comparative statics of decision makers\' flexible choices derived according to classical models of flexible decision-making with respect to observed exogenous states(or information) and applies this statics to real-option model and dynamic programming.

Difiierentiable Matrix is a kind of matrix which may mark the relation ship between decision attributes and condition attributes in rough sets theory.

Proceed from the main content of individuality designing study such as the designing method facing the product s entire life cycle, the clients participation design, the modeling of individuality products, the data management of products, the environment and tools of individuality design, the decision attribute of individuality design and the evalu.

The basic hypothesis of limited reason and the concept of flexible decision making based it are proposed.

The algorithm with a constraint self-regulation constitutes the kernel of qualitative decision.

Based on current utility maximization decision models, this paper obtains policy conforming to Agent individuality by associating individual decision principle with certain Agent individuality, referring to qualitative decision theory.