----------------------------------------------------------------------
[Lecturer]
	Ichiro IDE
	Associate Professor, PhD
	Nagoya University / National Institute of Informatics, Japan

[Title]
	Analysis of semantic structures in a large-scale news video
	archive for efficient information retrieval

[Abstract]
	Advance in storage technologies has enabled us to create large-
	scale online broadcast video archives. Among various programs, 
	news shows provide important information in an unstructured 
	form due to the nature of their contents. Thus it is critical
	to analyze the semantic structures (topics, threads, clusters, 
	and so on) that lie in a news video archive in order to 
	efficiently retrieve its contents.
	We, at NII, have been archiving a Japanese daily news show 
	since March, 2001. This has now summed up to more than 1,300 
	hours of video data in the form of approximately 750 GB of 
	MPEG-1 video data and 60 MB of closed-caption text data.
	Grasping the contents of such large amount of video data, and
	moreover, the relations between news stories exceeds human 
	ability. 

	This talk will introduce and demonstrate the following works 
	which support retrieval and reuse of news video in a large-
	scale news video archive, as solutions to the above-mentioned
	problem.

	(1) Retrieval of news topic threads and an interface based on
	    the thread structures named the "mediaWalker"

	(2) Cross-language retrieval of related news stories (not only)
	    by text and near-duplicate video segments: "mediaTraveller"

	(3) A news browsing interface based on social relations 
	    between people in news: trackThem

[Bio]
	Ichiro Ide received his B.E., M.E. and PhD from the University
	of Tokyo in 1994, 1996, and 2000, respectively. In 2000, he 
	joined the National Institute of Informatics (NII) located in 
	Tokyo, Japan as an assistant professor. Since 2004, he is in the
	current position at Nagoya University and a visiting position at
	NII. His main research interests include multi-modal image/video
	contents analysis and retrieval in various domains, such as news,
	sports, cooking, and also real-world video data obtained from 
	car-mounted cameras, surveillance cameras, and so on.
	He has been serving as Program Committee members for major 
	conferences in the multimedia field such as ACM Multimedia, ICME, 
	CIVR, SAMT and others.
----------------------------------------------------------------------