Theoretical Research And Application Of Computing Ad Retrieval System

Computing advertising,also known as online advertising or Internet advertising,refers to advertising placed on online media.Compared with traditional media advertising,computing advertising has gradually formed a technology-based and crowd-targeted development model in its short decades of development.The inverted index retrieval technology establishes an index data chain based on the keywords that represent the content of the advertisement creative,and the retrieval process can basically realize the time complexity independent of the number of advertisements in the database.The K-Index retrieval technology scheme divides the advertisement creatives into different subsets according to the number of the attribute label types in the advertisement targeting condition,so that a large part of the advertisement creatives that do not satisfy the targeting condition can be excluded in the retrieval process,but the retrieval performance decreases as the type of attribute label increases.The OpIndex retrieval technology selects the pivot attribute from the advertisement targeting condition as the first level index by a certain strategy,and the manner of dividing the advertisement materials can adapt to the development trend of the computing advertising.The main content of this paper is to design a two-level index scheme to organize advertisement creatives according to the existing advertising retrieval theory and the actual business needs of the e-commerce platform.The first level index adopts OpIndex retrieval theory,selecting the pivot attribute to divide the advertisement creatives into several subsets;the second level index draws on the experience of the K-Index retrieval theory to divide each subset,further narrowing down the number of elements in each subset.In order to improve retrieval efficiency,we try to minimize the amount of advertisement creatives accessed as far as possible,while ensuring that all advertisement creatives that meet.the targeting condition are available.Through real-time monitoring,the requirements of e-commerce platform has been satisfied.At the same time,a scheme of generating an AES encryption key by RSA encrypting advertiser account is designed to realize the secure transmission of advertising log data on the public network.