Ching-Yun Chang

I am a PhD student working with Dr. Stephen Clark in the Natural Language and Information Processing Group at the University of Cambridge Computer Laboratory. The thesis title is Transformations for Linguistic Steganography.

A web application demonstrating my PhD work can be found here.

• M.Sc. by Research in Computer Science (University of Oxford)
  Title of Thesis: Linguistic Steganography Using Automatically Generated Paraphrases
• B.Sc. in Computer Science (National Tsing Hua University)

My research interests span the area of applied research in Natural Language Processing (NLP), machine learning methods for NLP, lexical knowledge acquisition and large-scale semantic network construction.

Linguistic Steganography Papers:

• Adjective Deletion for Linguistic Steganography and Secret Sharing
  Ching-Yun Chang and Stephen Clark
  Proceedings of the Conference on Computational Linguistics (COLING-12), Mumbai, India, 2012
  [EXPERIMENT DATA] [PDF]
• The Secret's in the Word Order: Text-to-Text Generation for Linguistic Steganography
  Ching-Yun Chang and Stephen Clark
  Proceedings of the Conference on Computational Linguistics (COLING-12), Mumbai, India, 2012
  [EXPERIMENT DATA] [PDF]
• Practical Linguistic Steganography using Contextual Synonym Substitution and Vertex Colour Coding
  Ching-Yun Chang and Stephen Clark
  Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP-10), pp.1194-1203, Cambridge, MA, 2010
  [EXPERIMENT DATA] [PDF]
• Linguistic Steganography using Automatically Generated Paraphrases
  Ching-Yun Chang and Stephen Clark
  Proceedings of the Annual Meeting of the North American Association for Computational Linguistics (NAACL-HLT-10), pp. 591-599, Los Angeles, 2010
  [PDF]

Image Watermarking, Steganography and Processing Papers:

• Image Data Hiding Schemes Based on Graph Coloring
  Shuai Yue, Zhi-Hui Wang, Ching-Yun Chang, Chin-Chen Chang and Ming-Chu Li
  Ubiquitous Intelligence and Computing, Lecture Notes in Computer Science, Volume 6905/2011, pp.476-489, 2011
  
• A Survey of VQ Codebook Generation
  Tzu-Chuen Lu and Ching-Yun Chang
  Journal of Information Hiding and Multimedia Signal Processing, Vol. 1, No. 3, pp.190-203, July 2010
  
• Hiding Secret in Parity Check Bits by Applying XOR Function
  Chi-Shiang Chan and Ching-Yun Chang
  Proceedings of the 9th IEEE International Conference on Cognitive Informatics, pp.835-839, Beijing, China, July 2010
  
• Reversible Data Hiding in Two Steganographic Images Using Matrix Coding
  Chi-Shiang Chan and Ching-Yun Chang
  International Journal of Innovative Computing, Information and Control, Vol.6, No.5, pp.2089-2102, 2010
  
• An Information Hiding Schemes by Applying the Dynamic Programming Strategy to LSB Matching Revisited
  Chi-Shiang Chan and Ching-Yun Chang
  Proceedings of the Third International Conference on Ubiquitous Information Management and Communication, pp.246-250, Suwon, Korea, 2009
  
• An Efficient Progressive Image Transmission Scheme for Chinese Calligraphy
  Ching-Yun Chang and Iuon-Chang Lin,
  International Journal on Pattern Recognition and Artificial Intelligence, (SCI), Vol. 20, No. 7, pp.1077-1092, 2006
  
• Assuring Rightful Ownership for Digital Images Using Invisible Watermarks
  Ching-Yun Chang and Iuon-Chang Lin
  Wavelet Analysis and Active Media Technology, (J.P. Li Eds.), World Scientific Publishing Company, Imperial College Press, pp.533-550, 2005
  

• Google Research Award Project (Jul 2011 to Oct 2011): Knowledge Extraction and Discovery from Large-Scale Entity-Relationship Graphs
  Supervisor: Dr. Stephen Clark
  Google Sponsor: Dr. Keith Hall
  
• Alternative Splicing Identification and Prediction, University of Oxford (Sep 2006 to Jun 2008)
  Supervisor: Dr. Vasile Palade
  

• Linguistic Steganography, Open Days demonstration, University of Cambridge, Computer Laboratory, July, 2012
  
• Practical Linguistic Steganography Using Synonym Substitution, Security Group seminar series, Computer Laboratory, University of Cambridge, May, 2011
  
• Practical Linguistic Steganography Using Synonym Substitution, The Flatlands workshop, Open University, June, 2011
  
• Linguistic Steganography Using Automatically Generated Paraphrases, conference talk, NAACL, Los Angeles, USA, June, 2010
  
• Synonym Substitution for Linguistic Steganography, The Flatlands workshop, Department of Computer Science, University of Oxford, June, 2010
  
• Text Paraphrasing for Linguistic Steganography, The Flatlands workshop, Computer Laboratory, University of Cambridge, June, 2009
  

University of Cambridge Computer Laboratory
William Gates Building, 15 JJ Thomson Avenue
Cambridge CB3 0FD, UK
Ching-Yun.[last name]@cl.cam.ac.uk
+44 (0)1223 767024