Research Publications

Comprehensive list of research publications, conference papers, and abstracts.

Journals

Utility of Smoothing Techniques in Yield Curve Modeling for the Asian Pacific Frontier Capital Market

Dayarathne, K. P. N. S., U Thayasivam

SN Computer Science 2024 Vol: 5

Semi-Automatic Alignment of Multilingual Parts of Speech Tagsets

Yashothara, S., Uthayasanker, R., Dias, G., Jayasena, S.

Computacion Y Sistemas 2022 Vol: 26(3)

Towards Offensive Language Identification for Tamil Code-Mixed YouTube Comments and Posts

Vasantharajan, C., U Thayasivam

SN Computer Science 2021 Vol: 3(1)

Improved Speech Command Classification System for Sinhala Language based on Automatic Speech Recognition

Kavmini, L., Dinushika, T., U Thayasivam, Jayasena, S.

International Journal of Asian Language Processing 2020 Vol: 30(02)

Analyzing Subword Techniques to Improve English to Sinhala Neural Machine Translation

Naranpanawa, R., Perera, R., Fonseka, T., U Thayasivam

International Journal of Asian Language Processing 2020 Vol: 30(04)

Concept Discovery through Information Extraction in Restaurant Domain

Pathirana, N., Seneviratne, S., Samarawickrama, R., Wolff, S., Chitraranjan, C., U Thayasivam, Ranasinghe, T.

Computacion Y Sistemas 2019 Vol: 23(3)

Survey on Semantic Table Interpretation

de Alwis, L., Dissanayake, A., Pallewatte, M., Silva, K., U Thayasivam

2018

Speeding Up Iterative Ontology Alignment using Block-Coordinate Descent

U Thayasivam, P. Doshi

Journal of Artificial Intelligence Research 2014 Vol: 50

Conference Papers

Utility of Smoothing Techniques in Yield Curve Modeling for Non-Steady State Data of Sri Lanka Capital Market

K.P.S. Dayarathne, U Thayasivam

ICDSA 2023, Lecture Notes in Networks and Systems, vol 819, Springer, Singapore 2024

Application of Noise Filter Mechanism for T5-Based Text-to-SQL Generation

M. R. Aadhil Rushdy, U Thayasivam

2023 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka 2023

Speech Command Recognition Using Self-Supervised ASR in Tamil

I. Tharmakulasingham, U Thayasivam

2023 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka 2023

Extracting Potential Travel Time Information from Raw GPS Data and Evaluating the Performance of Public Transit: A Case Study in Kandy, Sri Lanka

S. Ratneswaran, U Thayasivam

ICCT 2023, Jaipur, India

An Improved Bus Travel Time Prediction Using Multi-Model Ensemble Approach for Heterogeneous Traffic Conditions

S. Ratneswaran, U Thayasivam

IEEE ITSC 2023, Bilbao, Spain

Party Extraction from Legal Contract Using Contextualized Span Representations of Parties

S. Sivapiran, C. Vasantharajan, U Thayasivam

Proceedings of the 14th International Conference on Recent Advances in Natural Language Processing, Varna, Bulgaria 2023

Unified Voice Embedding Through Multi-task Learning

J. Rajenthiran, L. Sithamaparanathan, S. Uthayakumar, U Thayasivam

IALP 2022, Singapore

Domain specific Question & Answer generation in Tamil

R. Murugathas, U Thayasivam

IALP 2022, Singapore

Domain Specific Intent Classification with BiLSTM

J. Hellarawa, U Thayasivam

IALP 2022, Singapore

Adapting the Tesseract Open-Source OCR Engine for Tamil and Sinhala Legacy Fonts and Creating a Parallel Corpus for Tamil-Sinhala-English

C. Vasantharajan, L. Tharmalingam, U Thayasivam

IALP 2022, Singapore

Language Model-Based Spell-Checker for Sri Lankan Names and Addresses

Y. Udagedara, B. Elikewela, U Thayasivam

MERCon 2022, Moratuwa, Sri Lanka

Shadow Removal for Documents with Reflective Textured Surface

A. Ravindran, U. Arudselvam, U Thayasivam

MERCon 2022, Moratuwa, Sri Lanka

A Deep Learning Ensemble Hate Speech Detection Approach for Sinhala Tweets

S. Munasinghe, U Thayasivam

MERCon 2022, Moratuwa, Sri Lanka

Low Resource Multi-ASR Speech Command Recognition

I. Mohamed, U Thayasivam

MERCon 2022, Moratuwa, Sri Lanka

Domain specific Named Entity Recognition in Tamil

R. Murugathas, U Thayasivam

MERCon 2022, Moratuwa, Sri Lanka

Data-Driven Simulation of Ride-Hailing Services Using Imitation and Reinforcement Learning

H. Jayasinghe, T. Jayatilaka, R. Gunawardena, U Thayasivam

IEA/AIE 2021, Kuala Lumpur, Malaysia

Speaker-Invariant Speech-to-Intent Classification for Low-Resource Languages

A. Ignatius, U. Thayasivam

23rd International Conference, SPECOM 2021, St. Petersburg, Russia, Springer 2021

End To End Model For Speaker Identification With Minimal Training Data

S. Balakrishnan, K. Jathusan, U. Thayasivam

2021 Moratuwa Engineering Research Conference (MERCon) 2021

Sentiment Analysis in Dravidian Code-Mixed YouTube Comments and Posts

S. Sivapiran, C. Vasantharajan, U. Thayasivam

FIRE (Working Notes) 2021

Retrieval-based End-to-End Tamil Language Conversational Agent for Closed Domain using Machine Learning

K. Kugathasan, U. Thayasivam

5th International Conference on Natural Language Processing and Information Retrieval 2021

FlowChroma-A Deep Recurrent Neural Network for Video Colorization

T. Wijesinghe, C. Abeysinghe, C. Wijayakoon, L. Jayathilake, U. Thayasivam

17th International Conference, ICIAR 2020, Póvoa de Varzim, Portugal, Springer 2020

A Generalized Ensemble Machine Learning Approach for Landslide Susceptibility Modeling

A. Bandara, Y. Hettiarachchi, K. Hettiarachchi, S. Munasinghe, I. Wijesinghe, U. Thayasivam

Data Management, Analytics and Innovation, Advances in Intelligent Systems and Computing, Springer 2020

Automating Web Table Columns to Knowledge Base Mapping using Translation Embedding

K. Chamiran, A. Rukshan, U. Thayasivam

IEEE 14th International Conference on Semantic Computing (ICSC) 2020

Hybrid Approach for Accurate and Interpretable Representation Learning of Knowledge Graph

N. Yogendran, A. Kanagarajah, K. Chandiran, U. Thayasivam

2020 Moratuwa Engineering Research Conference (MERCon) 2020

Meta Learning for Few-Shot Joint Intent Detection and Slot-Filling

H. S. Bhathiya, U. Thayasivam

5th International Conference on Machine Learning Technologies 2020

Speech Command Classification System for Sinhala Language Based on Automatic Speech Recognition

T. Dinushika, L. Kavmini, P. Abeyawardhana, U. Thayasivam, S. Jayasena

2019 International Conference on Asian Language Processing (IALP) 2019

Sinhala and Tamil Speech Intent Identification from English Phoneme-Based ASR

Y. Karunanayake, U. Thayasivam, S. Ranathunga

2019 International Conference on Asian Language Processing (IALP) 2019

Language Detection in Sinhala-English Code-Mixed Data

I. Smith, U. Thayasivam

2019 International Conference on Asian Language Processing (IALP) 2019

Video Colorization Dataset and Benchmark

C. Abeysinghe, T. Wijesinghe, C. Wijayakoon, L. Jayathilake, U. Thayasivam

2019 Moratuwa Engineering Research Conference (MERCon) 2019

ACTSEA: Annotated Corpus for Tamil & Sinhala Emotion Analysis

R. Jenarthanan, Y. Senarath, U. Thayasivam

2019 Moratuwa Engineering Research Conference (MERCon) 2019

Taxi Trip Travel Time Prediction with Isolated XGBoost Regression

K. D. Kankanamge, Y. R. Witharanage, C. S. Withanage, M. Hansini, D. Lakmal, U. Thayasivam

2019 Moratuwa Engineering Research Conference (MERCon) 2019

Transfer Learning Based Free-Form Speech Command Classification for Low-Resource Languages

Y. Karunanayake, U. Thayasivam, S. Ranathunga

57th Annual Meeting of the Association for Computational Linguistics: Student Research Workshop 2019

Extracting Relations from Web Tables by Leveraging Table Entity Behaviours

L. De Alwis, A. Dissanayake, M. Pallewatte, K. Silva, U. Thayasivam

IEEE 13th International Conference on Semantic Computing (ICSC) 2019

Amalgamation of General and Domain Specific Word Embeddings for Improved Hierarchical Aspect Aggregation

R. Perera, T. Malepathirana, Y. Abeysinghe, Y. Albar, U. Thayasivam

IEEE 13th International Conference on Semantic Computing (ICSC) 2019

Adaptation of Multivariate Concept to Multi-Way Agglomerative Clustering for Hierarchical Aspect Aggregation

Malepathirana, T., Perera, R., Abeysinghe, Y., Albar, Y., U Thayasivam

The Thirty-Second International Flairs Conference 2019

The utility of hierarchical phrase-based model machine translation for low resource languages

Yashothara, S., Uthayasanker R. T.

International Conference on Computational Linguistics and Intelligent Text Processing, Springer Nature Switzerland, Cham 2018

Linguistic divergence of Sinhala and Tamil languages in machine translation

Dilshani, W. S. N., Yashothara, S., Uthayasanker R. T., Jayasena, S.

2018 International Conference on Asian Language Processing (IALP) 2018

Improving Phrase-Based Statistical Machine Translation with Preprocessing Techniques

Yashothara, S., Uthayasanker R. T., Jayasena, S.

2018 International Conference on Asian Language Processing (IALP) 2018

Domain specific intent classification of Sinhala speech data

Buddhika, D., Liyadipita, R., Nadeeshan, S., Witharana, H., Javasena, S., U Thayasivam

2018 International Conference on Asian Language Processing (IALP) 2018

DataSEARCH at IEST 2018: multiple word embedding based models for implicit emotion classification of tweets with deep learning

Senarath, Y., U Thayasivam

Proceedings of the 9th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis 2018

Canonical Forms and Similarity of Complex Concepts for Improved Ontology Alignment

Chaudhari, T., U Thayasivam, Doshi, P.

2013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT) 2013

Speeding up batch alignment of large ontologies using MapReduce

U Thayasivam, Doshi, P.

2013 IEEE Seventh International Conference on Semantic Computing 2013

Improved convergence of iterative ontology alignment using block-coordinate descent

U Thayasivam, Doshi, P.

Proceedings of the AAAI Conference on Artificial Intelligence 2012

On the utility of WordNet for ontology alignment: Is it really worth it?

U Thayasivam, Doshi, P.

2011 IEEE Fifth International Conference on Semantic Computing 2011

Automatically mapping natural language requirements to domain-specific process models

U Thayasivam, Verma, K., Kass, A., Vasquez, R.

Proceedings of the AAAI Conference on Artificial Intelligence 2011

Interactive Autonomous Baby Sitting Robot

Cader, M. F. M. A., Iynkaran, N., Uthayasanker T., Munasinghe, S. R.

2006 International Conference on Information and Automation 2006

Abstracts

Yield Curve Modeling: Applicability of the Traditional Factor Models for Sri Lanka Government Bonds

Dayarathne, K. P. N. S., U Thayasivam

in Proc. Int. Stat. Conf. (ISC 2024), Colombo, Sri Lanka 2024

Explainable Embedding based on Speaker feature Using AAVD

Rajenthiran, J., Sithamaparanathan, L., Uthayakumar, S., U Thayasivam

in Technological Advances in Science, Medicine and Engineering Conference 2021

Suitable Approach for Building End-to-End Tamil language Chatbot for Closed Domain

Kugathasan, K., U Thayasivam

in Technological Advances in Science, Medicine and Engineering Conference 2021

Sub wording Techniques for Neural Machine Translation between English-Tamil Language pair

Baskarakurukkal, J., U Thayasivam

in Technological Advances in Science, Medicine and Engineering Conference 2021

An Overview of Speaker Normalization Techniques for Speech Recognition

Ignatius, A., U Thayasivam

in Technological Advances in Science, Medicine and Engineering Conference 2021

Hypers@ DravidianLangTech-EACL2021: Offensive language identification in Dravidian code-mixed YouTube comments and posts

Vasantharajan, C., Karunathilaka, S., Matharaarachchi, A., Rodrigo, H., U Thayasivam

in Proceedings of the first workshop on speech and language technologies for dravidian languages

A survey on paralinguistics in Tamil speech processing

Ignatius, A., U Thayasivam

in Proceedings of the First Workshop on Speech and Language Technologies for Dravidian Languages

Simplified Approach for Predicting Emotions of Multi-Turn Textual Utterances

Vickneswaran, J., Navanesan, P., Vijayaratnam, V., U Thayasivam

in 2020 20th International Conference on Advances in ICT for Emerging Regions (ICTer)

Dialog policy optimization for low resource setting using Self-play and Reward based Sampling

Madusanka, T., Langappuli, D., Welmilla, T., U Thayasivam, Jayasena, S.

in Proceedings of the 34th Pacific Asia Conference on Language, Information and Computation

A Privacy Preserving Data Publishing Middleware for Unstructured, Textual Social Media Data

Abeywardana, P., U Thayasivam

in Proceedings for the First International Workshop on Social Threats in Online Conversations: Understanding and Management

Sinhala-english code-mixed data analysis: A review on data collection process

Smith, I., U Thayasivam

in 2019 19th International Conference on Advances in ICT for Emerging Regions (ICTer) Vol: 250

Categorical Classification Approach for Identifying Multi-SIM Users from Call Detail Records

Soysa, C., Karunathilaka, S., Matharaarachchi, A., Rodrigo, H., U Thayasivam

in 2019 National Information Technology Conference (NITC)

A Sinhala and Tamil extension to generic environment for context-aware correction

Sithamparanathan, L., Uthayasanker, T.

in 2019 National Information Technology Conference (NITC)

Educational data mining: a review on data collection process

Mahanama, B., Mendis, W., Jayasooriya, A., Malaka, V., U Thayasivam, Umashanger, T.

in 2018 18th International Conference on Advances in ICT for Emerging Regions (ICTer)

Si-ta: Machine translation of Sinhala and Tamil official documents

Ranathunga, S., Farhath, F., U Thayasivam, Jayasena, S., Dias, G.

in 2018 National Information Technology Conference (NITC)

Graph based semi-supervised learning approach for Tamil POS tagging

Thayaparan, M., Ranathunga, S., U Thayasivam

in Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

Voicer: A crowd sourcing tool for speech data collection

Buddhika, D., Liyadipita, R., Nadeeshan, S., Witharana, H., Jayasena, S., U Thayasivam

in 2018 18th International Conference on Advances in ICT for Emerging Regions (ICTer)

Knowledge building via optimally clustered word embedding with hierarchical clustering

Pathirana, N., Seneviratne, S., Samarawickrama, R., Wolff, S., Chitraranjan, C., U Thayasivam, Ranasinghe, T.

in 15th International Conference on Natural Language Processing

A Study on the Utility of Hierarchical Phrase-Based Model for Low Resource Languages

Shanmugarasa, Y., U Thayasivam

in International Conference on Linguistics in Sri Lanka (ICLSL) 2017 [online]

Keynotes

Keynote Speaker for the Technical Session of Institution of Incorporated Engineers

2024-06

Eminent Speaker for the KaniTamil24- International Tamil Computing Conference organized by Government of Tamil Naadu, India

2024-02

Keynote speaker at the VINGNANAM Research Conference on the topic ”From Metrics to Mastery Comprehensive ML Model Evaluation”, organized by the Faculty of Science, University of Jaffna

2024-09

Workshops

MLOPS - Productionize and Operationalize Machine Learning Models

MERCon Conference 2023-11-11

Sequencing Success: A Hands-On Workshop in Deep Learning

MERCon Conference 2023-11-11

Diplomatic Skills for Academics

Open University of Sri Lanka in collaboration with BIDTI 2023-06-06

Word Embedding: From Word2Vec to StarSpace

ICAC Conference 2020-12-10

A Hands-on Workshop in Word Embedding

MERCon Conference 2020-07-30

A Hands-on Workshop in Word Embedding

MERCon Conference 2019-07-05

Conference Presentations

Utility of Multilingual Embedding for Tamil Language Technology

21st International Tamil Internet Conference, Thanjavur, India 2022-12

Explainable Embedding Based on Speaker Feature Using AAVD

Technological Advances in Science, Medicine and Engineering Conference, Virtually 2021-07

Suitable Approach for Building End-to-End Tamil Language Chatbot for Closed Domain

Technological Advances in Science, Medicine and Engineering Conference, Virtually 2021-07

Subwording Techniques for Neural Machine Translation between English-Tamil Language Pair

Technological Advances in Science, Medicine and Engineering Conference, Virtually 2021-07

An Overview of Speaker Normalization Techniques for Speech Recognition

Technological Advances in Science, Medicine and Engineering Conference, Virtually 2021-07

Simplified Approach for Predicting Emotions of Multi-Turn Textual Utterances

20th International Conference on Advances in ICT for Emerging Regions (ICTer), Colombo, Sri Lanka 2020-11

Automating Web Table Columns to Knowledge Base Mapping Using Translation Embedding

14th International Conference on Semantic Computing (ICSC), San Diego, CA, USA 2020-02

Sinhala-English Code-Mixed Data Analysis: A Review on Data Collection Process

19th International Conference on Advances in ICT for Emerging Regions (ICTer), Colombo, Sri Lanka 2019-09

A Tool to Explore Morphological Regularities of Tamil Language Using Word Embeddings

18th Tamil Internet Conference, Chennai, India 2019-09

Speech Command Classification System for Sinhala Language Based on Automatic Speech Recognition

International Conference on Asian Language Processing (IALP), Shanghai, China 2019-11

Sinhala and Tamil Speech Intent Identification from English Phoneme Based ASR

International Conference on Asian Language Processing (IALP), Shanghai, China 2019-11

Language Detection in Sinhala-English Code-Mixed Data

International Conference on Asian Language Processing (IALP), Shanghai, China 2019-11

Linguistic Divergence of Sinhala and Tamil Languages in Machine Translation

International Conference on Asian Language Processing (IALP), Bandung, Indonesia 2018-11

Improving Phrase-Based Statistical Machine Translation with Preprocessing Techniques

International Conference on Asian Language Processing (IALP), Bandung, Indonesia 2018-11

Domain Specific Intent Classification of Sinhala Speech Data

International Conference on Asian Language Processing (IALP), Bandung, Indonesia 2018-11

Educational Data Mining: A Review on Data Collection Process

18th International Conference on Advances in ICT for Emerging Regions, Colombo, Sri Lanka 2018-09

Voicer: A Crowdsourcing Tool for Speech Data Collection

18th International Conference on Advances in ICT for Emerging Regions, Colombo, Sri Lanka 2018-09

Speeding Up Batch Alignment of Large Ontologies Using MapReduce

IEEE Seventh International Conference on Semantic Computing, Irvine, USA 2013-09

Improved Convergence of Iterative Ontology Alignment Using Block-Coordinate Descent

Proceedings of the AAAI Conference on Artificial Intelligence, Toronto, Canada 2012-07

On the Utility of WordNet for Ontology Alignment: Is it Really Worth It?

IEEE Fifth International Conference on Semantic Computing, Palo Alto, USA 2011-09

Automatically Mapping Natural Language Requirements to Domain-Specific Process Models

Proceedings of the AAAI Conference on Artificial Intelligence, San Francisco, USA 2011-08

Interactive Autonomous Baby Sitting Robot

International Conference on Information and Automation, Colombo, Sri Lanka 2006-12

Industry & Other Presentations

From Metrics to Mastery: Comprehensive ML Model Evaluation

VINGNANAM Research Conference 2024-09

Advancements in Technical Engineering

Technical Session of the Institution of Incorporated Engineers 2024-06

Innovations in Tamil Computing

KaniTamil24 International Tamil Computing Conference 2024-02

Tutorial: Introduction to Eclipse

U Thayasivam, UGA CS Grad Students, Athens, Georgia 2011-11-17

Trigram Indexing and Search

U Thayasivam, Google, Atlanta, Georgia 2011-08-04

ProcGap: Structural Text Matching

U Thayasivam, Accenture Tech Labs, San Jose, California 2010-08-10

State of the Art on Ontology Alignment

U Thayasivam, Accenture Tech Labs, San Jose, California 2010-06-15

Posters

Improved Convergence of Iterative Ontology Alignment using Block-Coordinate Descent

U Thayasivam, Prashant Doshi

Research Day, Department of Computer Science, University of Georgia 2012

Optima+ Results for OAEI 2012

U Thayasivam, Prashant Doshi

Ontology Matching (OM) workshop in International Semantic Web Conference (ISWC), Boston, MA USA 2012

On the Utility of WordNet for Ontology Alignment

U Thayasivam

Research Day, Department of Computer Science, University of Georgia 2010

Unmanned Aerial Vehicle Simulator

U Thayasivam

Research Day, Department of Computer Science, University of Georgia 2009