Collective purchase behavior toward retail price changes

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• 作者：Hiromichi Ueno ; Tsutomu Watanabe ; Hideki Takayasu ; Misako Takayasu
• 关键词：Collective behavior ; Power law ; POS data ; Log-normal distribution
• 刊名：Physica A
• 出版年：2011
• 出版时间：1 February 2011
• 年：2011
• 卷：390
• 期：3
• 页码：499-504
• 全文大小：478 K

文摘

By analyzing a huge amount of point-of-sale data collected from Japanese supermarkets, we find power law relationships between price and sales numbers. The estimated values of the exponents of these power laws depend on the category of products; however, they are independent of the stores, thereby implying the existence of universal human purchase behavior. The rate of sales numbers around these power laws are generally approximated by log-normal distributions implying that there are hidden random parameters, which might proportionally affect the purchase activity.