图 书 馆
COM：一个群体推荐的生成模型COM: a Generative Model for Group Recommendation |
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| 课程网址: | http://videolectures.net/kdd2014_lin_group_recommendation/ |
| 主讲教师: | Chin-Yew Lin |
| 开课单位: | 微软公司 |
| 开课时间: | 2014-10-07 |
| 课程语种: | 英语 |
| 中文简介: |  随着在线社交网络的迅速发展，越来越多的人愿意分享他们的小组活动，例如与同事共进晚餐，和配偶一起看电影。这激发了关于组推荐的研究，该组推荐旨在为一组用户推荐项目。小组推荐是一个具有挑战性的问题，因为不同的小组成员具有不同的偏好，如何在他们的推荐偏好之间进行权衡仍然是一个未解决的问题。在本文中，我们提出了一种称为COM（COnsensus Model）的概率模型，以对小组活动的产生过程进行建模，并提出小组建议。凭直觉，组中的用户可能会有不同的影响，而与组相关的主题方面的专家通常更具影响力。此外，组中的用户作为组成员的行为可能与作为个人的行为有所不同。 COM是基于这些直觉而设计的，并且能够结合用户的选择历史和内容因素的个人考虑。在提出建议时，COM通过汇总具有不同权重的组成员的偏好来估计组对某个项目的偏好。我们在四个数据集上进行了广泛的实验，结果表明该模型可有效地提出小组推荐，并且明显优于基线方法。 |
| 课程简介: | With the rapid development of online social networks, a growing number of people are willing to share their group activities, e.g. having dinners with colleagues, and watching movies with spouses. This motivates the studies on group recommendation, which aims to recommend items for a group of users. Group recommendation is a challenging problem because different group members have different preferences, and how to make a trade-off among their preferences for recommendation is still an open problem. In this paper, we propose a probabilistic model named COM (COnsensus Model) to model the generative process of group activities, and make group recommendations. Intuitively, users in a group may have different influences, and those who are expert in topics relevant to the group are usually more influential. In addition, users in a group may behave differently as group members from as individuals. COM is designed based on these intuitions, and is able to incorporate both users' selection history and personal considerations of content factors. When making recommendations, COM estimates the preference of a group to an item by aggregating the preferences of the group members with different weights. We conduct extensive experiments on four datasets, and the results show that the proposed model is effective in making group recommendations, and outperforms baseline methods significantly. |
| 关 键 词: | 计算机科学; 共识模型 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2020-09-28：wuyq |
| 最后编审: | 2020-09-29：zyk |
| 阅读次数: | 46 |