活动时间：2025-05-23 10:00
活动地点：2号学院楼2432会议室
主讲人中文简介：
张扬，现为加拿大曼尼托巴大学数学系教授、加拿大国家自然科学和工程基金委计算机学部会评专家，曾担任Springer旗下《Journal of System Science and Complexity》期刊编委。其主要研究领域为矩阵代数、计算机代数、符号计算及其应用，己在国际自动化顶级期刊《Automatica》等刊物上发表SCI论文60多篇，在Springer出版社出版专著1部，研究工作一直得到加拿大国家自然科学和工程基金委员会的连续资助。
活动内容摘要：
In this talk, we first introduce the rank problem of quaternion tensors. Although it is NP-hard, we obtain the upper bounds for certain lower order tensors.
The tensor completion has been widely used in the fields of computer vision and image processing. In the second part of this talk, a new completion method for the quaternion tensor is explored via the QR decomposition and the definition of novel quaternion tensor norm, which can well balance the model generalization ability and efficiency, and the performance of the completion method has been substantially improved.
主持人：秦玉明