The issue of tuning in Indian classical music has been, historically, a matter of theoretical debate. In this paper, we study its contemporary practice in sung performances of Carnatic and Hindustani music following an empiric and quantitative approach. To do so, we select stable fundamental frequencies, estimated via a standard algorithm, and construct interval histograms from a pool of record...

In this paper, we introduce a new d-Spline based Incremental Performance Parameter Estimation method (IPPE ). We first define a fitting function d-Spline, which has high flexibility to adapt given data and can be easily computed. The complexity of d-Spline is O(n). We introduce a procedure for incremental performance parameter estimation and an example of data fitting using d-Spline. We applied...

In this paper we describe the architecture{speci c automatic performance tuning implemented in the UHFFT library. The UHFFT library is an adaptive and portable software library for fast Fourier transforms (FFT).

Monitoring of program behavior is a basic necessity for performance tuning and debugging. A major problem is the overhead associated with the monitoring tasks, which influences the program’s behavior and affects the observation results. At the same time, a certain amount of data is needed for the program analysis activities. For this reason, monitoring approaches have to balance the amount of o...

Despite the good results provided by Dynamic Classifier Selection (DCS) mechanisms based on local accuracy in a large number of applications, the performances are still capable of improvement. As the selection is performed by computing the accuracy of each classifier in a neighbourhood of the test pattern, performances depend on the shape and size of such a neighbourhood, as well as the local d...

Performance tuning often involves consideration of adding another server to the system. Owing to changes in technology, the additional server may be of a service rate different from that of the existing servers. Moreover, with heterogeneous servers, consideration must be given to what service discipline should be employed. An analysis is provided of the effect on waiting time using two service ...

Project Solutions. Increasing responsiveness is often dealt against decreasing another valuable resource. As responsiveness is a quality, the most significant resources in a software project to trade off are scope, cost, time, and other quality aspects. In a lot of systems, namely “embedded systems”, software is an integral part, but only one part of the system. Here trade-offs against hardware...

The performance optimization of scientific applications usually requires an in-depth knowledge of the hardware and software. A performance tuning mechanism is suggested to automatically tune OpenACC parameters to adapt to the execution environment on a given system. A historic learning based methodology is suggested to prune the parameter search space for a more efficient auto-tuning process. T...

This paper proposes a new PI/PID controller tuning method within filtered Smith predictor (FSP) configuration in order to deal with various types of time delay processes including stable, unstable and integrating delay dominant and slow dynamic processes. The proposed PI/PID controller is designed based on the IMC principle and is tuned using a new constraint and without requiring any approxima...