26 citations · 35 across the 4 of their papers we have counts for
4 papers
Frequency analysis and filter design for directed graphs with polar decomposition
Semin Kwak, Laura Shimabukuro, Antonio Ortega
In this study, we challenge the traditional approach of frequency analysis on directed graphs, which typically relies on a single measure of signal variation such as total variatio…
Traffic signal prediction on transportation networks using spatio-temporal correlations on graphs
Semin Kwak, Nikolas Geroliminis, Pascal Frossard
Multivariate time series forecasting poses challenges as the variables are intertwined in time and space, like in the case of traffic signals. Defining signals on graphs relaxes su…
Travel time prediction for congested freeways with a dynamic linear model
Semin Kwak, Nikolas Geroliminis
Accurate prediction of travel time is an essential feature to support Intelligent Transportation Systems (ITS). The non-linearity of traffic states, however, makes this prediction…
Monopulse beam synthesis using a sparse single-layer of weights
Semin Kwak, Joohwan Chun, Sung Hyuck Ye
A conventional monopulse radar system uses three beams; sum beam, elevation difference beam and azimuth difference beam, which require different layers of weights to synthesize eac…