Sirindhorn International Institute of Technology

Teaching Staff CPE

DR. NIRATTAYA KHAMSEMANAN

Date Posted : 2022-05-20

Faculty

School of Information, Computer, and Communication Technology (ICT)

Name

DR. NIRATTAYA KHAMSEMANAN

Position

Associate Professor

E-mail

nirattaya@siit.tu.ac.th

Phone Rangsit

+66-2-986-9009, +66-2-986-9101, +66-2-564-3226

Phone Bangkadi

Phone Extension

1808

Education

B.A. in Mathematics (cum laude), Cornell University, USA, May 2001
M.A. in Mathematics, University of California, Los Angeles (UCLA), USA, December 2002
Ph.D. in Mathematics, University of California, Los Angeles (UCLA), USA, June 2006

Academic Awards

2009 Best Teaching Award, Sirindhorn International Institute of Technology.
The Robert Sorgenfrey Distinguished Teaching Assistant Award 2005. Department of Mathematics. UCLA, CA.
The Cranson W. and Edna B. Shelly Award for Excellence in Undergraduate Research in Astronomy 1999-2000, Cornell University, NY.
Full DPST Scholarship, (Development and Promotion for Science and Technology) from the Royal Thai Government, 1996-2006.

Research Areas

Algebraic topology, Cryptography, Intelligent User Interface (IUI), and Machine learning

Research Interests

Algebraic Topology is a branch of mathematics which uses tools from abstract algebra to study topological spaces. The basic goal is to find algebraic invariants that classify topological spaces up to homeomorphism. The word “Topology” comes from the Greek words “topos”, which means place, and “logos”, which means study. Topology is the study of the properties of spaces that are invariant (preserved) under deformations, twisting, and stretching. It is often said that a topologist is a person who cannot tell the difference between their doughnut and their coffee mug, since each can be continuously deformed to the other (each is a solid sphere with one handle).

Cryptography can be summarized at a high level as the theory and practice of controlling information. Simple examples of its applications can be found in many places in modern society-perhaps the most prominent is that of securing electronic commerce. Branches of cryptography touch many areas of mathematics and computer science, including algebra, number theory, combinatorics and complexity theory, to name a few.

Intelligent User Interface (IUI) is a study on the development of human-machine interfaces that work naturally to the users, as well as improve the efficiency and effectiveness of the interaction. The goal of IUI is basically fulfilled by applying various techniques from Artificial Intelligence, Machine Learning, and Statistics, such as knowledge representation and reasoning, user modeling, gesture recognition, natural language processing, etc.

Machine Learning is a field of study that focuses on automatically constructing models from a set of collected examples. The obtained model can be used to predict the properties of the data found in the future. For example, a credit card company may need a model to predict if a payment made through their credit card is fraud or not. Manually constructing a model takes huge efforts and it may miss some fraudulent behaviors. Machine Learning helps reduce the required efforts, and wisely utilize a large amount of collected data.

Work Experiences

2008-Present: SIIT.
September 2006-2008: Assistant Professor in Residence, Department of Mathematics, University of Connecticut.
June 2006-August 2006: Lecturer, Department of Mathematics, UCLA.
January 2006-June 2006: Teaching Instructor, Department of Mathematics, UCLA.
September 2005-January 2006: Teaching Assistant Consultant, Department of Mathematics, UCLA.
July 2004 -August 2005: Teaching Assistant, Department of Mathematics, UCLA.
January 2003-June 2004: Teaching Assistant, Astronomy Department, UCLA.
July 1999-May 2001: Astronomy Research Assistant, Astronomy Department, Cornell University.

List of Publications

Selected Invited Talks

Topological Theory of Fixed and Periodic Points -TTFPP 2007, Bedlewo Poland,July 22-28, 2007.
AMS Special Session on Fixed Point Theory, Dynamics, and Group Theory, Joint Mathematics Meetings, New Orleans, Louisiana, January 5-8, 2007.

Publications

Influenza activity and province-level weather variations in Thailand, 2009 to 2014, using random forest time-series approach (with Romrawin Chumpu and Cholwich Nattee), Chiang Mai Journal of Science, Vol. 45 (2018), No. 5, 2509-2514.
Human identiﬁcation from freestyle walks using posture-based gait feature (with Cholwich Nattee and Nitchan Jianwattanapaisarn), IEEE Transactions on Information Forensics and Security, Vol. 13 (2018), No. 1, 119-128.
A new method to determine locations of rebars and estimate cover thickness of RC structures using GPR data (with Pongsak Wiwatrojanagul, Raktipong Sahamitmongkol, and Somnuk Tangtermsirikul), Construction and Building Materials, Vol. 140 (2017), 257-273.
A novel prediction approach for antimalarial activities of trimethoprim, pyrimethamine, and cycloguanil analogues using extremely randomized trees (with Cholwich Nattee, Luckhana Lawtrakul, Pisanu Toochinda, and Supa Hannongbua), Journal of Molecular Graphics and Modelling, Vol. 71 (2017), 13-27.
A prediction approach for anti-HIV activity of HEPT compounds using random forest technique (with Krit Inthajak, Pisanu Toochinda, Cholwich Nattee, and Luckhana Lawtrakul), Monatshefte für Chemie, Vol. 148 (2017), No. 10, 1697-1709.
On the black-box use of somewhat homomorphic encryption in noninteractive two-party protocols (with Rafail Ostrovsky and William E. Skeith), SIAM Journal on Discrete Mathematics, Vol. 30 (2016) No. 1, 266-295.
Gait recognition from freestyle walks using relative coordinates and random subsequence-based sum-rule classification (with Nitchan Jianwattanapaisarn and Cholwich Nattee), Proceedings of the Joint 8th International Conference on Soft Computing and Intelligent Systems and 17th International Symposium on Advanced Intelligent Systems (SCIS-ISIS 2016), Hokkaido, Japan, August 25-28, 2016, 5-9.
Quantiative structure-activity relationship analysis of 1-[(2-Hydroxyethoxy)methyl]-6-(phenylthio)thymine (HEPT) analogues with the use of random forest (with Krit Inthajak, Cholwich Nattee, Pisanu Toochinda, and Luckhana Lawtrakul), Proceedings of the 2016 Second Asian Conference on Defence Technology (ACDT 2016), Chiang Mai, Thailand, January 21-23, 2016, 170-173.
A rule-based approach for improving kinect skeletal tracking system with an application on standard Muay Thai maneuvers (with Ketchart Kaewplee and Cholwich Nattee), Proceedings of 2014 Joint 7th International Conference on Soft Computing and Intelligent Systems (SCIS 2014) and 15th International Symposium on Advanced Intelligent Systems (ISIS 2014), Kitakyushu, Japan, December 3-6, 2014, 281-285.
Human identification using skeletal gait and silhouette data extracted by Microsoft Kinect (with Nitchan Jianwattanapaisarn, Athiwat Cheewakidakarn, and Cholwich Nattee), Proceedings of 2014 Joint 7th International Conference on Soft Computing and Intelligent Systems (SCIS 2014) and 15th International Symposium on Advanced Intelligent Systems (ISIS 2014), Kitakyushu, Japan, December 3-6, 2014, 410-414.
A fixed point theorem for smooth extension maps (with R. F. Brown, C. Lee, and Sompong Dhompongsa), Fixed Point Theory and Applications, Vol. 2014, April 2014, Article No. 97, 6 p.
Muay Thai posture classification using skeletal data from kinect and k-nearest neighbors (with Ketchart Kaewplee and Cholwich Nattee), Proceedings of the International Conference on Information and Communication Technology for Embedded Systems (ICICTES2014) [CD-ROM], Ayutthaya, Thailand, January 23-25, 2014, 6 p.
View independent human identification by gait analysis using skeletal data and dynamic time warping (with Athiwat Cheewakidakarn and Cholwich Nattee), Proceedings of the International Conference on Information and Communication Technology for Embedded Systems (ICICTES2014) [CD-ROM], Ayutthaya, Thailand, January 23-25, 2014, 6 p.
Mathematical handwritten formula recognition (with Chaninthorn Amornsawaddirak and Cholwich Nattee), Proceedings of the International Conference on Information and Communication Technology for Embedded Systems (ICICTES2014) [CD-ROM], Ayutthaya, Thailand, January 23-25, 2014, 4 p.
Human Identification by gait analysis using skeletal data and dynamic time warping (with Athiwat Cheewakidakarn and Cholwich Nattee), Proceedings of the 14th International Symposium on Advanced Intelligent Systems (ISIS 2013) [CD-ROM], Daejeon, Korea, November 13-16, 2013, 13 p.
CESMath: an intelligent web-based application for mathematical education with free-answer questions and personalization (with Cholwich Nattee and Pornchai Inchai), Proceedings of 2013 International Symposium on Language, Linguistics, Literature and Education (ISLLLE) [CD-ROM], Osaka, Japan, November 7-9, 2013, Paper No. ISLLLE-202, 17-28.
Translation-Randomizable distributions via random walks (with William E. Skeith III), Lecture Notes in Computer Science: Provable Security: Proceedings of the 7th International Conference, ProvSec 2013, Melaka, Malaysia, October 23-25, 2013, Vol. 2809, (2013), 249-270.
A study and analysis of users’ one-handed thumb typing behaviors on smartphones (with Piyoros Tungthamthiti and Cholwich Nattee), Proceedings of the International Conference on Information and Communication Technology for Embedded Systems (ICICTES 2013) [CD-ROM], Samutsongkhram, Thailand, January 24-26, 2013, 49-53.
Interior fixed points of unit-sphere-preserving Euclidean maps (with Robert F. Brown; Catherine Lee; and Sompong Dhompongsa), Fixed Point Theory and Applications, Vol. 2012, Article ID. 183 (2012) 8 p.
Governing shifted characters of Thai input method for smartphones (with Piyoros Tungthamthiti and Cholwich Nattee), Proceedings of the 6th International Conference on Soft Computing and Intelligent Systems, and the 13th International Symposium on Advanced Intelligent Systems (SCIS-ISIS 2012) [CD-ROM], Kobe, Japan, November 20-24, 2012, 1584-1589.
A preliminary report on applying density function for positive and unlabeled learning on text categorization (with Cholwich Nattee and Masayuki Numao), Proceedings of The First ASIAN Conference on Information Systems (ACIS 2012) [CD-ROM] , Siem Reap, Cambodia, December 6-8, 2012, 384-387.
An acronym-based candidate generation technique for virtual keyboard on smartphone: a preliminary report (with Cholwich Nattee), Proceedings of The First ASIAN Conference on Information Systems (ACIS 2012) [CD-ROM] , Siem Reap, Cambodia, December 6-8, 2012, 348-351.
Nielsen theory and some selected applications to differential and integral equations; a brief survey, Journal of Nonlinear Analysis and Optimization, Vol. 2 (2011) No. 1, 19-24.
Insights regarding the usefulness of partial notes in mathematics courses (with F. Cardetti and M. C. Orgnero), Journal of the Scholarship of Teaching and Learning, Vol. 10 (2010) No. 1, 80-92.
Fixed points of maps of a nonaspherical wedge, (with S. Kim, R. F. Brown, A. Ericksen, and K. Merrill), Fixed Point Theory and Applications, Vol. 2009, Article ID 531037 (2009) 18 p.
Estimating Nielsen number on wedge product spaces (with S. Kim), Fixed Point Theory and Applications, Vol. 2007.
An algorithm for calculating the mod H Reidemeister trace of some maps of surfaces with boundary, Ph.D thesis UCLA, 2006.
Two-distance preserving functions (with R. Connelly), Contributions in Algebra and Geometry, Vol. 43 (2002) No. 2, 557-564.

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