经济学的一个范畴，研究实际决策程序对最后作出决策的影响。
A field of economics that studies how the actual decision-making process influences the decisions that are reached.
这类方法通常会创建一个范例数据库，然后凭据某个相似性权衡标准来把新数据和数据库进行比较，从而找到最匹配的项，最后作出预测。
Such methods typically build up a database of example data and compare new data to the database using a similarity measure in order to find the best match and make a prediction.
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