Natural Language Watermarking and Tamperproofing. - Mikhail J. Atallah; Victor Raskin; Christian Hempelmann; Mercan Karahan; Radu Sion; Umut Topkara; Katrina E. Triezenberg (Information Hiding, 2002)

A hierarchical protocol for increasing the stealthiness of steganographic methods. - Mercan Topkara; Umut Topkara; Mikhail J. Atallah; Cüneyt M. Taskiran; Eugene T. Lin; Edward J. Delp (MM&Sec, 2004)

Private collaborative forecasting and benchmarking. - Mikhail J. Atallah; Marina Bykova; Jiangtao Li 001; Keith B. Frikken; Mercan Topkara (WPES, 2004)

ViWiD : Visible Watermarking Based Defense Against Phishing. - Mercan Topkara; Ashish Kamra; Mikhail J. Atallah; Cristina Nita-Rotaru (IWDW, 2005)

Natural language watermarking. - Mercan Topkara; Cüneyt M. Taskiran; Edward J. Delp (Security, Steganography, and Watermarking of Multimedia Contents, 2005)

The hiding virtues of ambiguity: quantifiably resilient watermarking of natural language text through synonym substitutions. - Umut Topkara; Mercan Topkara; Mikhail J. Atallah (MM&Sec, 2006)

Attacks on lexical natural language steganography systems. - Cüneyt M. Taskiran; Umut Topkara; Mercan Topkara; Edward J. Delp (Security, Steganography, and Watermarking of Multimedia Contents, 2006)

Natural language watermarking: Challenges in building a practical system. - Mercan Topkara; Giuseppe Riccardi; Dilek Hakkani-Tür; Mikhail J. Atallah (Security, Steganography, and Watermarking of Multimedia Contents, 2006)

Passwords decay, words endure: secure and re-usable multiple password mnemonics. - Umut Topkara; Mikhail J. Atallah; Mercan Topkara (SAC, 2007)

Information hiding through errors: a confusing approach. - Mercan Topkara; Umut Topkara; Mikhail J. Atallah (Security, Steganography, and Watermarking of Multimedia Contents, 2007)

Passwords for Everyone: Secure Mnemonic-based Accessible Authentication. - Umut Topkara; Mercan Topkara; Mikhail J. Atallah (USENIX ATC, 2007)

New designs for improving the efficiency and resilience of natural language watermarking - Mercan Topkara (2007)

Collaborative editing of micro-tags. - Mercan Topkara; Bernice E. Rogowitz; Steve Wood; Jeff Boston (CHI Extended Abstracts, 2009)

Tags, micro-tags and tag editing: improving internet search. - Bernice E. Rogowitz; Mercan Topkara (Human Vision and Electronic Imaging, 2009)

FALCON: seamless access to meeting data from the inbox and calendar. - Peter Bjellerup; Karl J. Cama; Mukundan Desikan; Yi Guo; Ajinkya Kale; Jennifer C. Lai; Nizar Lethif; Jie Lu 002; Mercan Topkara; Stephan H. Wissel (CIKM, 2010)

Visualizing meetings as a graph for more accessible meeting artifacts. - Yurdaer N. Doganata; Mercan Topkara (CHI Extended Abstracts, 2011)

"You've got video": increasing clickthrough when sharing enterprise video with email. - Mercan Topkara; Shimei Pan; Jennifer C. Lai; Ahmet Dirik; Steve Wood; Jeff Boston (CHI, 2012)

In case you missed it: benefits of attendee-shared annotations for non-attendees of remote meetings. - Mukesh Nathan; Mercan Topkara; Jennifer C. Lai; Shimei Pan; Steve Wood; Jeff Boston; Loren G. Terveen (CSCW, 2012)

How Multimedia in Enterprise Social Networks Matters to People's Performance. - Zhen Wen; Mercan Topkara; Liangliang Cao; Ching-Yung Lin; Jennifer C. Lai (ICME Workshops, 2012)

Dare to Compare: Motivating Expertise Building in the Enterprise through Intelligent User Modeling Interfaces. - Mercan Topkara; Justin D. Weisz; Shimei Pan; Jie Lu 002; Jennifer C. Lai (DUBMOD@CIKM, 2014)

Composite Search for Distributed Multimedia Recorded Meetings. - Shimei Pan; Mercan Topkara; Steve Wood; Jeff Boston; Jennifer C. Lai (ISM, 2014)

Expediting expertise: supporting informal social learning in the enterprise. - Jennifer C. Lai; Jie Lu 002; Shimei Pan; Danny Soroker; Mercan Topkara; Justin D. Weisz; Jeff Boston; Jason Crawford (IUI, 2014)

Perceptual evaluation of visual alerts in surveillance videos. - Bernice E. Rogowitz; Mercan Topkara; William Pfeiffer; Arun Hampapur (Human Vision and Electronic Imaging, 2015)

User-directed Non-Disruptive Topic Model Update for Effective Exploration of Dynamic Content. - Yi Yang 042; Shimei Pan; Yangqiu Song; Jie Lu 002; Mercan Topkara (IUI, 2015)

Visual Affect Around the World: A Large-scale Multilingual Visual Sentiment Ontology. - Brendan Jou; Tao Chen 015; Nikolaos Pappas 002; Miriam Redi; Mercan Topkara; Shih-Fu Chang (ACM Multimedia, 2015)

Enabling Multiple QR Codes in Close Proximity. - Mercan Topkara; Thomas Erickson; Umut Topkara; Chandrasekhar Narayanaswami 001 (CoRR, 2015)

Making Enterprise Recorded Meetings Easy to Discover and Share. - Shimei Pan; Mercan Topkara; Jeff Boston; Steve Wood; Jennifer C. Lai (Int. J. Multim. Data Eng. Manag., 2015)

Improving Topic Model Stability for Effective Document Exploration. - Yi Yang 042; Shimei Pan; Yangqiu Song; Jie Lu 002; Mercan Topkara (IJCAI, 2016)

Complura: Exploring and Leveraging a Large-scale Multilingual Visual Sentiment Ontology. - Hongyi Liu 004; Brendan Jou; Tao Chen 015; Mercan Topkara; Nikolaos Pappas 002; Miriam Redi; Shih-Fu Chang (ICMR, 2016)

Multilingual Visual Sentiment Concept Matching. - Nikolaos Pappas 002; Miriam Redi; Mercan Topkara; Brendan Jou; Hongyi Liu 004; Tao Chen 015; Shih-Fu Chang (ICMR, 2016)

The Stability and Usability of Statistical Topic Models. - Yi Yang 042; Shimei Pan; Jie Lu 002; Mercan Topkara; Yangqiu Song (ACM Trans. Interact. Intell. Syst., 2016)

Multilingual visual sentiment concept clustering and analysis. - Nikolaos Pappas 002; Miriam Redi; Mercan Topkara; Hongyi Liu 004; Brendan Jou; Tao Chen 015; Shih-Fu Chang (Int. J. Multim. Inf. Retr., 2017)