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计算广告中的概率机器学习

Probabilistic Machine Learning in Computational Advertising
课程网址: http://videolectures.net/nipsworkshops09_graepel_pmlca/  
主讲教师: Thore Graepel
开课单位: 微软公司
开课时间: 2010-01-19
课程语种: 英语
中文简介:
在过去的几年里,在线广告的增长速度至少比所有其他媒体上的广告快了一个数量级。这篇演讲集中在搜索引擎上的广告上,准确预测用户点击广告的概率对所有三方都至关重要:用户、广告商和搜索引擎。我们提出了一个贝叶斯概率分类模型,该模型能够从数兆字节的Web使用数据中学习。该模型明确地表示了允许完全概率预测的不确定性:10个实例中有2个阳性,或1000个实例中有200个阳性,两者的平均值为20%,但在第一种情况下,预测的不确定性应该更大。我们还提出了一种近似并行推理方案,允许在分布式数据体系结构上对算法进行有效的训练。
课程简介: In the past years online advertising has grown at least an order of magnitude faster than advertising on all other media. This talk focuses on advertising on search engines, where accurate predictions of the probability that a user clicks on an advertisement crucially benefit all three parties involved: the user, the advertiser, and the search engine. We present a Bayesian probabilistic classification model that has the ability to learn from terabytes of web usage data. The model explicitly represents uncertainty allowing for fully probabilistic predictions: 2 positives out of 10 instances or 200 out of 1000 both give an average of 20%, but in the first case the uncertainty about the prediction should be larger. We also present a scheme for approximate parallel inference that allows efficient training of the algorithm on a distributed data architecture.
关 键 词: 在线广告; 搜索引擎; 贝叶斯模型; 不确定性预测; 分布式数据架构
课程来源: 视频讲座网
最后编审: 2020-06-08:吴雨秋(课程编辑志愿者)
阅读次数: 54