Junchao Lv

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Linear classification is an important technique in machine learning and data mining, and development of fast optimization methods for training linear classification models is a hot research topic. Stochastic gradient descent (SGD) can achieve relatively good results quickly, but unstable to converge. Limited-memory BFGS (L-BFGS) method converges, but takes(More)
SiO<inf>2</inf> nanowires structures have been grown by a simple thermal evaporation method using C and SiO<inf>2</inf> as the source materials at a relatively low. The as-synthesized products were characterized by scanning electron microscopy, electron energy-dispersive X-ray (EDX), X-ray powder diffraction (XRD), Raman spectroscopy (RS) and(More)
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