220 Pawtucket St

Lowell, MA 01854, USA

Email: ruizhe_ma AT uml DOT edu

Publications:

TT-graph: A new model for building social network graphs from texts with time series

W Jia, R Ma, L Yan, W Niu, Z Ma

Expert Systems with Applications 192, 116405

Machinery Fault Diagnosis Based on Deep Learning for Time Series Analysis and Knowledge Graphs

H Liu, R Ma, D Li, L Yan, Z Ma

Journal of Signal Processing Systems 93 (12), 1433-1455

Two-stage prediction of machinery fault trend based on deep learning for time series analysis

H Xu, R Ma, L Yan, Z Ma

Digital Signal Processing 117, 103150

Tiered Clustering for Time Series Data

R Ma, R Angryk

The International Conference on Deep Learning, Big Data and Blockchain, 3-14

On the mining of the minimal set of time series data shapelets

SF Boubrahimi, SM Hamdi, R Ma, R Angryk

2020 IEEE International Conference on Big Data (Big Data), 493-502

Fast Online Similarity Search for Uncertain Time Series

R Ma, D Zheng, L Yan

Journal of computing and information technology 28 (1), 1-17

Machine learning in heliophysics and space weather forecasting: a white paper of findings and recommendations

G Nita, M Georgoulis, I Kitiashvili, V Sadykov, E Camporeale, ...

arXiv preprint arXiv:2006.12224

Evaluation of hierarchical structures for time series data

R Ma, SF Boubrahimi, RA Angryk, Z Ma

2020 5th IEEE International Conference on Big Data Analytics (ICBDA), 94-99

A Hybrid Approach for Clustering Uncertain Time Series

R Ma, X Zhu, L Yan

Journal of computing and information technology 28 (4), 255-267

Solar pre-flare classification with time series profiling

R Ma, A Ahmadzadeh, SF Boubrahimi, MK Georgoulis, RA Angryk

2019 IEEE International Conference on Big Data (Big Data), 4967-4976

A scalable segmented dynamic time warping for time series classification

R Ma, A Ahmadzadeh, SF Boubrahimi, RA Angryk

International Conference on Artificial Intelligence and Soft Computing, 407-419

A Shapelet Transform Classification over Uncertain Time Series

R Ma, L Zuo, L Yan

Journal of computing and information technology 27 (3), 15-28

Segmented dynamic time warping: A comparative and applicational study

R Ma, A Ahmadzadeh, SF Boubrahimi, RA Angryk

Emerging Technologies and Applications in Data Processing and Management, 1-19

Segmentation of time series in improving dynamic time warping

R Ma, A Ahmadzadeh, SF Boubrahimi, RA Angryk

2018 IEEE International Conference on Big Data (Big Data), 3756-3761

Neuro-ensemble for time series data classification

SF Boubrahimi, R Ma, R Angryk

2018 IEEE 5th International Conference on Data Science and Advanced Analytics (DSAA)

Neuro-ensemble

SF Boubrahimi, R Ma, B Aydin, R Angryk

2018 IEEE First International Conference on Artificial Intelligence and Knowledge Engineering (AIKE)

Time series distance density cluster with statistical preprocessing

R Ma, S Filali Boubrahimi, R Angryk

International Conference on Big Data Analytics and Knowledge Discovery, 371-381

Scalable knn search approximation for time series data

SF Boubrahimi, R Ma, B Aydin, SM Hamdi, R Angryk

2018 24th International Conference on Pattern Recognition (ICPR), 970-975

Spatiotemporal interpolation methods for solar event trajectories

SF Boubrahimi, B Aydin, MA Schuh, D Kempton, RA Angryk, R Ma

The Astrophysical Journal Supplement Series 236 (1), 23

Coronal mass ejection data clustering and visualization of decision trees

R Ma, RA Angryk, P Riley, SF Boubrahimi

The Astrophysical Journal Supplement Series 236 (1), 14

Solar flare prediction using multivariate time series decision trees

R Ma, SF Boubrahimi, SM Hamdi, RA Angryk

2017 IEEE International Conference on Big Data (Big Data), 2569-2578

A time series classification-based approach for solar flare prediction

SM Hamdi, D Kempton, R Ma, SF Boubrahimi, RA Angryk

2017 IEEE International Conference on Big Data (Big Data), 2543-2551

Distance and density clustering for time series data

R Ma, R Angryk

2017 IEEE international conference on data mining workshops (ICDMW), 25-32

RDF approximate queries based on semantic similarity

L Yan, R Ma, D Li, J Cheng

Computing 99 (5), 481-491

A data-driven analysis of interplanetary coronal mass ejecta and magnetic flux ropes

R Ma, R Angryk, P Riley

2016 IEEE international conference on big data (Big Data), 3177-3186

SPARQL queries on RDF with fuzzy constraints and preferences

R Ma, X Jia, J Cheng, RA Angryk

Journal of Intelligent & Fuzzy Systems 30 (1), 183-195

Efficient processing of twig query with compound predicates in fuzzy XML

J Liu, ZM Ma, R Ma

Fuzzy sets and systems 229, 33-53