MEASURING THE DIVERSITY OF HOUSEHOLD SPENDING PATTERNS
回顾了家庭支出多样化的已知事实和驱动因素，比较了多种衡量方法（如联合概率、距离和熵指数），并用英国家庭数据展示了不同方法的结果差异。
Abstract Households tend to diversify their spending across a wide range of goods and services as they become more affluent. Recently, there has been growing interest in understanding the precise manner in which this spending diversification process takes place. We review what facts are known about this process and the underlying behavioural tendencies that are thought to drive it. In addition, we clarify the relationship between different approaches to measuring the level of spending diversity. A number of indices are employed, including measures based on joint probabilities, distances and the concept of entropy. Using UK household spending data, we show the extent to which these measures deliver different results and shed light on the nature of behavioural heterogeneity.