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Software companies spend over 45 percent of cost in dealing with software bugs. An inevitable step of fixing bugs is bug triage, which aims to correctly assign a developer to a new bug. To decrease the time cost in manual work, text classification techniques are applied to conduct automatic bug triage. In this paper, we address the problem of data reduction for bug triage, i.e., how to reduce the...
It is an important issue to assess the state-of-health (SOH) of battery, including aircraft. There are several methods on the assessment of SOH of battery having been reported in recent years. Herein, we proposed a hybrid PSO+SVM model, which employed particle swarm optimization (PSO) algorithm to search the best parameters of support vector machine (SVM) to estimate SOH of aviation lead-acid battery...
Bug triage is an important step in the process of bug fixing. The goal of bug triage is to assign a new-coming bug to the correct potential developer. The existing bug triage approaches are based on machine learning algorithms, which build classifiers from the training sets of bug reports. In practice, these approaches suffer from the large-scale and low-quality training sets. In this paper, we propose...
This paper proposes a method to calibrate and position surgical instruments using stereo camera, discusses the calibration error and its propagation when the instrument is positioned. A planar marker composed by X corners is attached to the instrument, and a reference frame is established on the marker. The structural parameter of instrument is calibrated on clinical site by rotating the instrument...
In this paper, an unconditionally stable implicit difference scheme based on quartic spline interpolations in space direction and finite difference discretization in time direction for the numerical solution of two-dimensional linear hyperbolic equation is proposed. The proposed scheme is second-order accurate in time direction and fourth-order accurate in space direction. Numerical examples are tested...
Based on the analysis of the insufficiencies of the present Chinese matching algorithms, by examining the characteristics of approximately duplicate records, this paper proposes a method of duplicate record cleaning based on a reformative keywords matching algorithm. Experiments show that this method improves Recall and Precision of duplicate record evidently.
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