This paper examines the forecasting accuracy and the cost effectiveness of time series models with time-varying coefficients. A simulation study investigates the potential forecasting benefits of a ...

Duke University researcher Romit Roy Choudhury is working on an application called UnLoc (for “unsupervized localization”) that uses recursion, filtering, and “invisible landmarks” to work out your ...

Hardware-design engineers have long recognized the usefulness of RC lowpass filters (Figure 1). Lowpass filters are useful for performing signal conditioning, removing noise from a signal, or ...