门槛模型：一个社会学形式理论的建构与拓展
Threshold Models: the Formation and Extension of a Formal Theory in Sociology

形式理论如今已在社会科学领域取得了广泛的应用。微观经济学更是经典形式理论中的代表。反观社会学领域，经典形式理论却少之又少，马克.格兰诺维特的门槛模型可谓少数中的范例。针对社会学形式理论的稀缺现状，本文旨在解析门槛模型的一系列建构和拓展思路，并通过与微观经济学的理论发展做比较，试图发现社会学形式理论的独特之处。为了对此做充分讨论，笔者将首先深入简单门槛模型的形式化与数理化过程，逐一梳理其建模思想，并展示后续模型的延展逻辑；其次，从行为假设的形式化、社会过程的数理化以及形式理论的延展性这三个方面，具体辨析微观经济学理论与门槛理论的建模差异，并尝试总结两者的特点。
：Formal theories have been broadly used in social science. Especially, the whole Micro-economics is a typical application, while in sociology are quite few. Fortunately, Mark Grannovetter's threshold models seem regarded as a paragon. Owing to the scarcity of formal theories in Sociology, We will focus on the establishment and extension of threshold models in order to explore the approaches to formal sociology. First, we will illustrate the formalization and mathematical analysis of the simple threshold model, and explain the logic of theory accumulations in two complex ones; secondly, the comparison between the development of Micro-economics and threshold models will help us generalize the special characteristics of formal theories in Sociology