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报告题目：深度神经网络与主题建模
报 告 人：Wray Buntine
报告时间：2018年11月21日 9:00
报告地点：21#426多媒体报告厅
主办单位：科学技术研究院
承办单位：计算机科学与技术学院
报告人简介：Wray Buntine is a full professor at Monash University from 2014 and is director of the Master of Data Science, the Faculty of IT's newest and in-demand degree. He was previously at NICTA Canberra, Helsinki Institute for Information Technology where he ran a semantic search project, NASA Ames Research Center, University of California, Berkeley, and Google. He is known for his theoretical and applied work and in probabilistic methods for document and text analysis, social networks, data mining and machine learning.
报告内容：Something Old: In this talk I will first describe some of our recent work with hierarchical probabilistic models that are not deep neural networks. Nevertheless, these are currently among the state of the art in classification and in topic modelling: k-dependence
Bayesian networks and hierarchical topic models, respectively, and both are deep models in a different sense. These represent some of the leading edge machine learning technology prior to the advent of deep neural networks. Something New: On deep neural networks, I will describe as a point of comparison some of the state of the art applications I am familiar with: multi-task learning, document classification, and learning to learn. These build on the RNNs widely used in semi-structured learning. The old and the new are remarkably different. So what are the new capabilities deep neural networks have yielded? Do we even need the old technology? What can we do next? Something Borrowed: to complete the story, I'll introduce some efforts to combine the two approaches, borrowing from earlier work in statistics.
