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Managing advertising campaigns-an approximate planning approach

Frontiers of Computer Science 2012年第2期6卷 209-229页

作者： SertanGIRGIN JérémieMARY PhilippePREUX OlivierNICOL Team—projectSequeL INRIALilleNordEuropeVilleneuved’Ascq59650France LIFLUMRCNRS Universit6deLilleVilleneuved’Ascq59650France

We consider the problem of displaying commer- cial advertisements on web pages, in the ＂cost per click＂ model. The advertisement server has to learn the appeal of each type of visitor for the different advertisements in order to maximize the profit. Advertisements have constraints such as a certain number of clicks to draw, as well as a lifetime. This problem is thus inherently dynamic, and intimately com- bines combinatorial and statistical issues. To set the stage, it is also noteworthy that we deal with very rare events of in- terest, since the base probability of one click is in the or- der of 10-4. Different approaches may be thought of, rang- ing from computationally demanding ones （use of Markov decision processes, or stochastic programming） to very fast ones. We introduce NOSEED, an adaptive policy learning al- gorithm based on a combination of linear programming and multi-arm bandits. We also propose a way to evaluate the extent to which we have to handle the constraints （which is directly related to the computation cost）. We investigate the performance of our system through simulations on a realistic model designed with an important commercial web actor.

关键词： advertisement selection web sites optimiza-tion non-stationary setting linear programming multi-armbandit click-through rate (CTR) estimation exploration-exploitation trade-off

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Dreamweaver MX : :inside Macromedia /

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2003年

作者： Belinski Julia Pryor.

来源：畅想之星图书光盘版（南... 评论

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SQL Injection Defense Mechanisms for IIS＋ASP＋MSSQL web Applications

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China Communications 2010年第6期7卷 145-147页

作者： Wu Beihua East China University of Political Science and Law Shanghai 201620 P. R. China

With the sharp increase of hacking attacks over the last couple of years, web application security has become a key concern. SQL injection is one of the most common types of web hacking and has been widely written and used in the wild. This paper analyzes the principle of SQL injection attacks on web sites, presents methods available to prevent IIS ＋ ASP ＋ MSSQL web applications from these kinds of attacks, including secure coding within the web application, proper database configuration, deployment of IIS. The result is verified by WVS report.

关键词： SQL injection web sites security cybercrime

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