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Computer Processing of Oriental Languages. Language Technology for the Knowledge-based Economy
Volume 5459 of the series Lecture Notes in Computer Science pp 270-281
Probabilistic Methods for a Japanese Syllable Cipher
- Sujith RaviAffiliated withInformation Sciences Institute, Computer Science Department, University of Southern California
- , Kevin KnightAffiliated withInformation Sciences Institute, Computer Science Department, University of Southern California
Abstract
This paper attacks a Japanese syllable-substitution cipher. We use a probabilistic, noisy-channel framework, exploiting various Japanese language models to drive the decipherment. We describe several innovations, including a new objective function for searching for the highest-scoring decipherment. We include empirical studies of the relevant phenomena, and we give improved decipherment accuracy rates.
Keywords
Substitution cipher decipherment language modeling- Title
- Probabilistic Methods for a Japanese Syllable Cipher
- Book Title
- Computer Processing of Oriental Languages. Language Technology for the Knowledge-based Economy
- Book Subtitle
- 22nd International Conference, ICCPOL 2009, Hong Kong, March 26-27, 2009. Proceedings
- Pages
- pp 270-281
- Copyright
- 2009
- DOI
- 10.1007/978-3-642-00831-3_25
- Print ISBN
- 978-3-642-00830-6
- Online ISBN
- 978-3-642-00831-3
- Series Title
- Lecture Notes in Computer Science
- Series Volume
- 5459
- Series ISSN
- 0302-9743
- Publisher
- Springer Berlin Heidelberg
- Copyright Holder
- Springer-Verlag Berlin Heidelberg
- Additional Links
- Topics
- Keywords
-
- Substitution cipher
- decipherment
- language modeling
- eBook Packages
- Editors
-
- Wenjie Li (19)
- Diego Mollá-Aliod (20)
- Editor Affiliations
-
- 19. Department of Computing, The Hong Kong Polytechnic University, Hung Hom, Kowloon
- 20. Division of Information and Communication Sciences, Macquarie University
- Authors
-
- Sujith Ravi (21)
- Kevin Knight (21)
- Author Affiliations
-
- 21. Information Sciences Institute, Computer Science Department, University of Southern California, Marina del Rey, California, 90292
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