This study considers the problem of estimating the market size for individual items in the retail grocery industry by sampling the point-of-sales (POS) data from a small number of stores.

• 摘要透过全业销售情报的收集，全业可以充分掌握与了解消费者对各种商品种类、价格、通路及促销活动的反应，做出有效的商品管理重要决策。