图 书 馆
A选择最最好的预算模型的选择方法A selecting-the-best method for budgeted model selection |
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| 课程网址: | http://videolectures.net/ecmlpkdd2011_bontempi_budgeted/ |
| 主讲教师: | Gianluca Bontempi |
| 开课单位: | 比利时自由大学 |
| 开课时间: | 2011-11-30 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | The paper focuses on budgeted model selection, that is the selection between a set of alternative models when the ratio between the number of model assessments and the number of alternatives, though bigger than one, is low. We propose an approach based on the notion of probability of correct selection, a notion borrowed from the domain of Monte Carlo stochastic approximation. The idea is to estimate from data the probability that a greedy selection returns the best alternative and to define a sampling rule which maximizes such quantity. Analytical results in the case of two alternatives are extended to a larger number of alternatives by using the Clark's approximation of the maximum of a set of random variables. Preliminary results on synthetic and real model selection tasks show that the technique is competitive with state-of-the-art algorithms, like the bandit UCB. |
| 关 键 词: | 计算机科学; 机器学习; 蒙特卡罗方法 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-06-06：魏雪琼(课程编辑志愿者) |
| 阅读次数: | 54 |