The Department of Mathematics at Diponegoro University (UNDIP), through its Applied Mathematics Research Group (KBK Matematika Terapan), once again hosted an inspiring academic event in the form of an online Visiting Lecturer Talk. This activity is part of an ongoing effort to broaden the academic community’s understanding of cutting-edge developments in applied mathematics and data science. On Friday, October 31, 2025, from 13:00 to 16:00 WIB, the Applied Mathematics Research Group held a guest lecture titled “From Time Series Analysis to Hammerstein and Deep Learning-Based System”. The event featured a distinguished speaker, Asst. Prof. Yingzhe Luo from the Faculty of Data Science, City University of Macau. He is widely recognized for his contributions in machine learning-based prediction for nonlinear systems, data-driven modeling, and the integration of statistical and computational approaches in complex data analysis. The discussion was moderated by Handika Lintang Saputra, a lecturer at UNDIP’s Department of Mathematics who is also actively engaged in research on dynamic systems.
The topic presented in this lecture reflects a scientific trajectory that is highly relevant to the challenges of the data-driven era. Beginning with time series analysis—a foundational method for understanding temporal data dynamics—the talk progressed to the Hammerstein model, a classical approach in nonlinear systems that combines linear and nonlinear blocks in sequence. Prof. Luo further elaborated on how deep learning-based methods can enrich the representation and prediction of complex systems, particularly in contexts such as control, forecasting, and data-driven decision-making. This lecture was not only theoretical in nature but also showcased case studies and real-world applications of these approaches across various domains, including stock market prediction.
The event attracted hundreds of participants, including students, lecturers, researchers, and professionals from diverse backgrounds who share an interest in system modeling, data analysis, and the application of machine learning in both scientific and industrial contexts. The Visiting Lecturer Talk is expected to strengthen UNDIP’s academic network while enriching participants’ insights into global research trends in applied mathematics and data science.