The Cost of Information: The Case of Constant Marginal Costs
提出了一个信息获取的公理化理论，核心是信息生产的边际成本恒定：生成两个独立信号的成本等于各自成本之和，生成概率减半的信号成本也减半。结合布莱克威尔单调性和连续性条件，这些公理将信号成本确定为一个参数向量，参数有清晰的经济含义，用于衡量区分不同状态的难度。对研究信息经济学和微观经济理论的学者有参考价值。
We develop an axiomatic theory of information acquisition that captures the idea of constant marginal costs in information production: the cost of generating two independent signals is the sum of their costs, and generating a signal with probability half costs half its original cost. Together with Blackwell monotonicity and a continuity condition, these axioms determine the cost of a signal up to a vector of parameters. These parameters have a clear economic interpretation and determine the difficulty of distinguishing states.