推广的拍卖品的多目标排名

Last year, eBay Ads launched a new campaign type, Promoted Listings Express (PLX), which lets eBay sellers boost visibility for their auction-style listings with just a few clicks and a single, flat, upfront fee. Over the past year, our research team worked to optimize how we merchandise these promoted auction items. The way in which we recommend these items is a multi-sided customer challenge which presents opportunities to surface amazing auction inventory to eBay buyers, as well as help sellers to boost visibility on their auction listings.

去年，eBay广告公司推出了一种新的活动类型--"促销物品快递"(PLX)，让eBay卖家只需点击几下，并支付一笔统一的预付费用，即可提高其拍卖式物品的知名度。在过去一年中，我们的研究团队努力优化我们对这些促销拍卖项目的推销方式。我们推荐这些项目的方式是一个多面的客户挑战，它提供了向eBay买家展示惊人的拍卖库存的机会，并帮助卖家提高其拍卖清单的知名度。

Ranking Iterations

排名迭代

Promoted auction items currently surface on a number of fixed slots in the Similar Sponsored Item recommendations, which are similar items with respect to the main item on the eBay View Item page. This main item is also known as the “seed” item. An example recommendation set is highlighted below:

推广的拍卖项目目前在类似赞助项目推荐中的一些固定位置上出现，这些项目与eBay查看项目页面上的主要项目类似。这个主要项目也被称为 "种子 "项目。下面是一个推荐集的例子。

To determine which PLX listings are shown in these fixed slots, we use ranking techniques that assign a score to the listings on the basis of multiple relevance and revenue parameters. There were three sequential iterations to improve the item ranking methodology:

为了确定哪些PLX列表显示在这些固定的位置上，我们使用了排名技术，根据多个相关性和收入参数为这些列表分配分数。有三个连续的迭代来改进项目排名方法。

Ratio Ranking

比率排行

The first iteration of ranking PLX items prioritizes achieving seller listing view targets during the auction period. In this approach, PLX items for the allocated slots of Similar Sponsored Item recommendations were selected using a weighted random scheme. The weights for the random selection, represented below as itemscore1, are equal to the number of remaining views to satisfy the target threshold divided by the time left in the auction.

PLX项目排名的第一次迭代优先考虑在拍卖期间实现卖家列表浏览目标。在这种方法中，使用加权随机方案选择类似赞助项目推荐的分配槽的PLX项目。随机选择的权重，下面表示为itemscore1，等于满足目标阈值的剩余浏览量除...