Osamu UCHIDA


A Real-Time Information Sharing System to Support Self-, Mutual-, and Public-Help in the Aftermath of a Disaster Utilizing Twitter
Osamu UCHIDA Masafumi KOSUGI Gaku ENDO Takamitsu FUNAYAMA Keisuke UTSU Sachi TAJIMA Makoto TOMITA Yoshitaka KAJITA Yoshiro YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/08/01
Vol. E99-A  No. 8  pp. 1551-1554
Type of Manuscript:  Special Section LETTER (Special Section on Information and Communication Systems for Safe and Secure Life)
Category: 
Keyword: 
Twitterdisaster informationdisaster mitigationtweet mapping
 Summary | Full Text:PDF(1.9MB)

Identifying Important Tweets by Considering the Potentiality of Neurons
Ryozo KITAJIMA Ryotaro KAMIMURA Osamu UCHIDA Fujio TORIUMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/08/01
Vol. E99-A  No. 8  pp. 1555-1559
Type of Manuscript:  Special Section LETTER (Special Section on Information and Communication Systems for Safe and Secure Life)
Category: 
Keyword: 
tweetsneural networkgeneralizationselective informationpotentiality
 Summary | Full Text:PDF(189.3KB)

The Optimal Overflow and Underflow Probabilities of Variable-Length Coding for the General Source
Osamu UCHIDA Te Sun HAN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2457-2465
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Shannon Theory
Keyword: 
overflow probabilityunderflow probabilitygeneral sourcevariable-length source codingreliability function
 Summary | Full Text:PDF(253.6KB)