图 书 馆
基于主题嵌入的高效相关主题建模Efficient Correlated Topic Modeling with Topic Embedding |
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| 课程网址: | http://videolectures.net/kdd2017_zhang_topic_modeling/ |
| 主讲教师: | Muhan Zhang |
| 开课单位: | 视频讲座网 |
| 开课时间: | 2017-10-09 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Correlated topic modeling has been limited to small model and problem sizes due to their high computational cost and poor scaling. In this paper, we propose a new model which learns compact topic embeddings and captures topic correlations through the closeness between the topic vectors. Our method enables efficient inference in the low-dimensional embedding space, reducing previous cubic or quadratic time complexity to linear w.r.t the topic size. We further speedup variational inference with a fast sampler to exploit sparsity of topic occurrence. Extensive experiments show that our approach is capable of handling model and data scales which are several orders of magnitude larger than existing correlation results, without sacrificing modeling quality by providing competitive or superior performance in document classification and retrieval. |
| 关 键 词: | 主题建模; 可伸缩性; 问题规模 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2022-12-16：chenxin01 |
| 最后编审: | 2022-12-16：chenxin01 |
| 阅读次数: | 16 |