中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
Knowledge-Based Topic Model for Multi-Modal Social Event Analysis 期刊论文  OAI收割
IEEE TRANSACTIONS ON MULTIMEDIA, 2020, 卷号: 22, 期号: 8, 页码: 2098-2110
作者:  
Xue, Feng;  Hong, Richang;  He, Xiangnan;  Wang, Jianwei;  Qian, Shengsheng
  |  收藏  |  浏览/下载:19/0  |  提交时间:2020/08/31
Application of Topic-based Real-time Message Bus Technology in Engineering Management of High-speed Rails 期刊论文  OAI收割
Engineering Management Reviews, 2017, 卷号: 6, 期号: 1, 页码: 1-5
作者:  
Hu GL(胡国良);  Li YN(李永妮);  Wen ZY(文志永);  Liu SH(柳少华)
  |  收藏  |  浏览/下载:16/0  |  提交时间:2017/12/21
An Improved Message Filter and Routing Algorithm Based on Topic and Eigenvalue Similarity 会议论文  OAI收割
2017 2nd International Conference on Computer Science and Technology (CST 2017), Guilin, China, May 26-28, 2017
作者:  
Duan B(段彬);  Guan XF(管晓飞);  Pan FC(潘福成);  Li P(里鹏);  Hu GL(胡国良)
  |  收藏  |  浏览/下载:20/0  |  提交时间:2017/12/21
Update Summarization via Graph-Based Sentence Ranking 期刊论文  OAI收割
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, 2013, 卷号: 25, 期号: 5, 页码: 1162-1174
Li, Xuan; Du, Liang; Shen, Yi-Dong
  |  收藏  |  浏览/下载:24/0  |  提交时间:2014/12/16
Accuracy synthesis of a 3-RPS parallel robot based on manufacturing costs (EI CONFERENCE) 会议论文  OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Yao T.-K.; Xi Z.; Feng Z.; Zhang L.-M.; Yong W.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
Pose accuracy is an important issue for parallel robot being used as mirror supporting system of telescope. One challenging topic is the accuracy synthesis which deals with the optimal design of the manufacturing and assembling tolerances of each component under the given pose accuracy. First  the error model of the 3-RPS parallel robot is built based on total derivation of the kinematic equations. And the error variable of each spherical or rotate joint can be expressed as a single boundary error parameter but not three independent position parameters. Then  the accuracy synthesis model is formulated taking the manufacturing costs as the optimization objective and the accuracy requirements as the constraint condition. Finally  the genetic algorithm is used to solve the optimization problem and a simulation example is given. The results show that the accuracy synthesis method based on manufacturing costs can satisfy the need of pose accuracy and is better for engineering application than the method based on error sensitivity. 2012 Chinese Assoc of Automati.  
Improved TOPS about direction of arrival estimation for wideband signals (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China
作者:  
He B.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
The study about the direction-of-arrival (DOA) estimation for wideband signals is a basic topic of Signal Processing. The method called test of orthogonality of projected subspaces (TOPS) does not require initial values to form focusing matrix compared with the coherent signal subspace method (CSSM)  but it has poor performance for coherent wideband signals at low signal-to-noise ratio (SNR). Based on the lack of the conventional TOPS  this paper reconstructs a set of new matrices with the narrowband correlated matrices coming from the DFT decomposition of the array output and modifies the method frame of the conventional TOPS. So we get a set of reconstructed matrices with full rank corresponding to each frequency bin  and which have no array aperture loss. The improved TOPS can estimate the DOA for coherent wideband sources at low SNR  and enhances the performance of the conventional TOPS. Simulation results show that the improved TOPS is effective  and the total performance of which is similar to the rotational signal-subspace (RSS) method. (2012) Trans Tech Publications.  
情感文本分类方法研究 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2008
作者:  
李寿山
收藏  |  浏览/下载:126/0  |  提交时间:2015/09/02