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<math>\Pr(\text{RCA}_i \geq 1 \mid \text{RCA}_j \geq 1)</math> is the conditional probability of exporting good i given that you export good j. By considering the minimum of both conditional probabilities, we eliminate the problem that arises when a country is the sole exporter of a particular good: the conditional probability of exporting any other good given that one would be equal to one for all other goods exported by that country.

<math>\Pr(\text{RCA}_i \geq 1 \mid \text{RCA}_j \geq 1)</math> is the conditional probability of exporting good i given that you export good j. By considering the minimum of both conditional probabilities, we eliminate the problem that arises when a country is the sole exporter of a particular good: the conditional probability of exporting any other good given that one would be equal to one for all other goods exported by that country.

1) </math > Pr (text { RCA } i geq 1 mid text { RCA } j geq 1) </math > 是输出好的条件概率，因为你输出好的 j。通过考虑这两个条件概率的最小值，我们消除了当一个国家是某一特定商品的唯一出口国时出现的问题: 假定该国出口的所有其他商品的出口条件概率等于该国出口的所有其他商品的出口额。

当给定出口商品j时，<math>\Pr(\text{RCA}_i \geq 1 \mid \text{RCA}_j \geq 1)</math>是出口商品i的条件概率。通过考虑这两个条件概率的最小值，我们消除了当一个国家是某种商品的唯一出口国时出现的问题: 出口任何其他商品的条件概率对于该国出口的所有其他货物都为1

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