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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2019     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Source separation and apportionment of surface water pollution in the Luanhe River Basin based on non-negative matrix factorization 期刊论文 WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY, 2019, 卷号: 19, 期号: 7, 页码: 1945-1954 作者:  Leng, Peifang;  Zhang, Qiuying;  Li, Fadong;  Zhang, Yizhang;  Gu, Congke 收藏  |  浏览/下载：17/0  |  提交时间：2020/05/19 land use  Luanhe River  NMF  pollution  sources  surface water   Sparse Envelope Spectra for Feature Extraction of Bearing Faults Based on NMF 期刊论文 APPLIED SCIENCES-BASEL, 2019, 卷号: 9 作者:  Liang, Lin;  Shan, Lei;  Liu, Fei;  Niu, Ben;  Xu, Guanghua 收藏  |  浏览/下载：125/0  |  提交时间：2019/11/19 rolling bearing fault  feature extraction  non-negative matrix factorization  time-frequency distribution   Experimental explorations on short text topic mining between LDA and NMF based Schemes 期刊论文 KNOWLEDGE-BASED SYSTEMS, 2019, 卷号: 163, 页码: 1-13 作者:  Chen, Yong;  Zhang, Hui;  Liu, Rui;  Ye, Zhiwen;  Lin, Jianying 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/30 Short text mining  Topic modeling  Latent dirichlet allocation (LDA)  Non-negative matrix factorization (NMF)  Knowledge-based learning