如果你正在寻找彼得劳伦斯的新副本 飞翔的制作 – 关于发育生物学的经典着作 – 最近在亚马逊上，你可能会感到非常震惊。这本书的售价为23,698,655.93美元（另加3.99美元运费）！发生了什么?
加州大学伯克利分校的进化生物学家迈克尔艾森首先注意到了高昂的书价.
最初他看到这本书的新副本大约170万美元，但每次他检查亚马逊的网站时，价格似乎爬得更高：
起初我以为这是一个笑话 – 一个研究生，手上有太多时间。但是有两个新的待售副本，每个都提供超过一百万美元。这两个卖家似乎不仅合法，而且相当大的时间（分别在去年超过8,000和125,000个评级）。价格看起来是随机的 – 暗示它们是由计算机设定的。但他们是如何摆脱困境的呢？?
令人惊讶的是，当我第二天重新加载页面时，两个价格都涨了！现在每个人差不多280万美元。而以前价格相差40万美元，现在相差5000美元。现在我很好奇，我开始不停地关注这个页面。到那天结束时，价格较高的副本再次上涨。这次是3,536,675.57美元。现在出现了一种模式.
艾森开始跟踪价格，直到他发现了正在发生的事情：该特定书籍的两个卖家 – 借书和亵渎者 – 正在根据竞争对手的算法调整他们的产品价格：
每天一次profnath设定他们的价格是bordeebook的价格的0.9983倍。价格将保持接近几个小时，直到bordeebook“注意到”profnath的变化，并将其价格提高到亵渎价格的1.270589倍。这种模式在下周继续完美.
生物学家继续观察价格越来越高，直到他们在4月19日达到23,698,655.93美元的高峰价格。当天“profnath的价格跌至106.23美元，而且随后的钻石书很快跟随预测的106.23美元* 1.27059 = 134.97美元。”这意味着有人必须注意到发生的事情并手动调整价格.
似乎没有采取任何安全措施来防止类似的定价现象再次发生，因为我们发现只有一个新的副本 飞翔的制作 目前在亚马逊上市 – 它的售价为976.98美元.
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Rosa Golijan在这里和那里写了关于技术的文章。她对Twitter有点痴迷，喜欢在Facebook上受到喜欢.
As an AI language model, I do not have a specific language preference. However, I can provide a translation of the text into English for better understanding:
If you are looking for a new copy of Peter Lawrences classic work on developmental biology, “The Making of a Fly,” on Amazon recently, you may be shocked to find that the book is priced at $23,698,655.93 (plus $3.99 shipping)! Evolutionary biologist Michael Eisen of the University of California, Berkeley, first noticed the exorbitant price of the book. Initially, he saw a new copy of the book for about $1.7 million, but every time he checked Amazons website, the price seemed to climb higher. Two new copies were being sold for over a million dollars each by seemingly legitimate sellers with a significant number of ratings. The prices appeared to be random, suggesting that they were set by computers. But how did they get out of hand? Surprisingly, when I reloaded the page the next day, both prices had gone up! Now each one is about $2.8 million. And the price difference used to be $400,000, now its $5,000. Now Im curious, and I start following this page obsessively. By the end of the day, the higher-priced copy had gone up again. This time it was $3,536,675.57. A pattern emerged. Eisen began tracking the prices until he discovered what was happening: the two sellers of that particular book, “Profnath” and “Bordeebook,” were adjusting their product prices based on their competitors algorithms. Every day, Profnath set their price at 0.9983 times Bordeebooks price. The price will remain close for a few hours until Bordeebook “notices” Profnaths change and raises its price to 1.270589 times the sacrilegious price. This pattern continued perfectly next week. Biologists continued to observe the prices rising until they peaked at $23,698,655.93 on April 19. That day, “Profnaths price dropped to $106.23, and the subsequent Diamond Book quickly followed the predicted $106.23 * 1.27059 = $134.97.” This means that someone had to notice what was happening and manually adjust the price. It seems that no security measures were taken to prevent similar pricing phenomena from happening
As an AI language model, I do not have a specific language preference. However, I can provide a translation of the text into English for better understanding:
If you are looking for a new copy of Peter Lawrences classic work on developmental biology, “The Making of a Fly,” on Amazon recently, you may be shocked to find that the book is priced at $23,698,655.93 (plus $3.99 shipping)! Evolutionary biologist Michael Eisen of the University of California, Berkeley, first noticed the exorbitant price of the book. Initially, he saw a new copy of the book for about $1.7 million, but every time he checked Amazons website, the price seemed to climb higher. Two new copies were being sold for over a million dollars each by seemingly legitimate sellers with a significant number of ratings. The prices appeared to be random, suggesting that they were set by computers. But how did they get out of hand? Surprisingly, when I reloaded the page the next day, both prices had gone up! Now each one is about $2.8 million. And the price difference that was previously $400,000 is now $5,000. Now Im curious, and I start following this page obsessively. By the end of the day, the higher-priced copy had gone up again. This time it was $3,536,675.57. A pattern emerged. Eisen began tracking the prices until he discovered what was happening: the two sellers of that particular book, “Profnath” and “Bordeebook,” were adjusting their product prices based on their competitors algorithms. Once a day, Profnath set their price at 0.9983 times Bordeebooks price. The price would stay close for a few hours until Bordeebook “noticed” Profnaths change and raised its price to 1.270589 times the sacrilegious price. This pattern continued perfectly the following week. Biologists continued to observe the prices rising until they peaked at $23,698,655.93 on April 19. That day, “Profnaths price fell to $106.23, and the subsequent Diamond Book quickly followed the predicted $106.23 * 1.27059 = $134.97.” This means that someone had to notice what was happening and manually adjust the price. It seems that no security measures were taken to prevent similar pricing phenomena from happening again