2017年6月22日，澳大利亚悉尼科技大学何祥健教授访问网络安全与密码技术重点实验室，并于当日下午在成功楼603报告厅作了题为“Unsupervised Multi-Author Document Decomposition based on Hidden Markov Model”的学术报告。

报告中，何教授介绍了一种无监督的多作者文稿分类方法。该方法的关键之处在于利用隐藏在整个文稿元素中的序列模式来确定待分类文稿属于哪一个作者。何教授表示，实验结果表明，与同类研究相比，他们的方法具有更好的效果。此外，何教授还对该研究的实际应用提出了一些见解。

何教授生动形象的表述给大家带来了一场精彩的学术报告，引起了与会者的极大兴趣，给予了大家很多启发。

专家简介：Professor Xiangjian He is the Director of Computer Vision and Pattern Recognition Laboratory at the Global Big Data Technologies Centre (GBDTC), at the University of Technology, Sydney (UTS). He is also the Co-Director of UTS-SHU Joint Engineering and Innovation Institute and the Director of UTS-NPU International Joint Laboratory on Digital Media and Intelligent Networks. He is an IEEE Senior Member and has been an IEEE Signal Processing Society Student Committee member. He has been awarded 'Internationally Registered Technology Specialist' by International Technology Institute (ITI). He has been carrying out research mainly in the areas of computer vision, network security, and pattern recognition in the previous years. He has played various chair roles in many international conferences such as ACM MM, MMM, IEEE TrustCom, IEEE CIT, IEEE AVSS, IEEE ICPR and IEEE ICARCV. In recent years, he has many high quality publications in IEEE Transactions journals such as IEEE Transactions on Computers, IEEE Transactions on Parallel and Distributed Systems, IEEE Transactions on Multimedia, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Transactions on Cloud Computing, IEEE Transactions on Reliability, IEEE Transactions on Consumer Electronics, and in Elsevier’s journals such as Pattern Recognition, Signal Processing, Neurocomputing, Future Generation Computer Systems, Computer Networks, Computer and System Sciences, Network and Computer Applications. He has also had papers published in premier international conferences and workshops such as ACL, IJCAI, CVPR, ECCV, ACM MM, TrustCom and WACV. He has recently played editorial roles for various international journals such as Journal of Computer Networks and Computer Applications (Elsevier) and Signal Processing (Elsevier). He is currently an Advisor of HKIE Transactions. Since 1985, he has been an academic, a visiting professor, an adjunct professor, a postdoctoral researcher or a senior researcher in various universities/institutions including Xiamen University, China, Shanghai Jiaotong University, China, NorthwesternPolytechnical University, China, University of New England, Australia, University of Georgia, USA, Electronic and Telecommunication Research Institute (ETRI) of Korea, University of Aizu, Japan, Hongkong Polytechnic University, and Macau University.