Hedonic price functions are frequently used to identify the marginal implicit prices for characteristics of differentiated products, including seafood products. These marginal implicit prices are determined by both consumer preferences and producer costs. When preferences or costs for a single characteristic differ systematically across omitted submarkets, the results are an average of the heterogeneous effects. An empirical test for the joint significance of interaction terms is sufficient to identify the presence of submarkets. We motivate the selection of submarkets on the basis of production differences across salmon species, then use county-level aggregate retailer scanner data for the US state of California from 2013 to 2016 to estimate hedonic price functions. The results indicate that species and production method submarkets exist. Letting differences in production motivate the dimensions for submarkets results in a more accurate picture of the market.

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享乐价格函数和市场结构：加州三文鱼供应驱动子市场分析

特征价格函数经常用于识别差异化产品特征的边际隐含价格，包括海鲜产品。这些边际隐含价格由消费者偏好和生产者成本共同决定。当一个特征的偏好或成本在被忽略的子市场之间系统地不同时，结果是异质效应的平均值。对交互项的联合显着性的实证检验足以识别子市场的存在。我们根据鲑鱼种类的产量差异来推动子市场的选择，然后使用 2013 年至 2016 年美国加利福尼亚州的县级综合零售商扫描仪数据来估计特征价格函数。结果表明存在物种和生产方法子市场。