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| 1 | Feature-aware regularization for sparse online learning显示文摘Learning a compact predictive model in an online setting has recently gained a great deal of attention.The combination of online learning with sparsity-inducing regularization enables faster learning with a smaller memory space than the previous learning frameworks.Many optimization methods and learning algorithms have been developed on the basis of online learning with L1-regularization.L1-regularization tends to truncate some types of parameters,such as those that rarely occur or have a small range of values,unless they are emphasized in advance.However,the inclusion of a pre-processing step would make it very difficult to preserve the advantages of online learning.We propose a new regularization framework for sparse online learning.We focus on regularization terms,and we enhance the state-of-the-art regularization approach by integrating information on all previous subgradients of the loss function into a regularization term.The resulting algorithms enable online learning to adjust the intensity of each feature’s truncations without pre-processing and eventually eliminate the bias of L1-regularization.We show theoretical properties of our framework,the computational complexity and upper bound of regret.Experiments demonstrated that our algorithms outperformed previous methods in many classification tasks. | OIWA Hidekazu MATSUSHIMA Shin NAKAGAWA Hiroshi | 2014 | Science China(Information Sciences)2014，57，5： | 2 |
| 2 | Overexpression of p53 is associated with growth pattern and prognosis in advanced gastric cancer显示文摘 | Oiwa H Tomisaki S | 1997 | Hepatogastroenterology1997，44，14： | 1 |
| 3 | Cont rol of magnetization reversal process by light illumination in ferromagnetic semiconductor heterost ructure p(In,Mn) As/ GaSb显示文摘 | OIWA A SLUPINSKI T MUNEKATA H | 2001 | Appl Phys Lett2001，78，4： | 1 |
| 4 | X-ray diffraction evidence for the lack of stereospecific protein interactions in highly activated actomyosin complex显示文摘 | IWAMOTO H OIWA K SUZUKI T | 2001 | Journal of Molecular Biology2001，305，： | 1 |
| 5 | The relationshipbetween 24-hour blood pressure readings, subcortical ischemiclesions and vascular dementia 显示文摘 | YAMAMOTO Y AKIGUCHI I OIWA K | 2005 | Cerebrovasc Dis2005，19，5： | 1 |
| 6 | Twenty-four-hour blood pressure changers in the course of lacunar disease显示文摘 | Akiguchi I Oiwa K | 2001 | Cerebrovasc Dis2001，11，： | 1 |
| 7 | Adverse effect of nighttime blood pressure on the outcome of lacunar infarct patients显示文摘 | Yamamoto Y Akiguchi I Oiwa K | 1998 | Stroke1998，29，3： | 1 |
| 8 | Ferromagnetic Order Induced by Photogenerated Carriers in Magnetic Ⅲ-Ⅴ Semiconductors of ( In, Mn) As/GaSb 显示文摘 | koshihara S Oiwa A Hirasawa M | 1997 | Phys Rev Lette1997，78，： | 1 |
| 9 | Polymerization of allyl esters of unsaturated-acids controlled ring-closure in the radical cyclo-polymerization of allyl methacrylate显示文摘 | Matsumoto A Ishido H Oiwa M | 1982 | Polym Sci Polym Chem Ed1982，20，： | 1 |
| 10 | Prognosis and surgical treatment of gastric cancer invading the pancreas显示文摘 | Maehara Y Oiwa H Tomisaki S | 2000 | Oncology2000，59，1： | 1 |
| 11 | Gastric carcinoma in patients over 70 years of age 显示文摘 | Maehara Y Oshiro T Oiwa H | 1995 | Br J Surg1995，382，1： | 1 |
| 12 | Adverse effect of nighttime blood pressure on the outcome of lacunar infarct patients显示文摘 | Yamamoto Y Akiguchi I Oiwa K | 1998 | Stroke1998，29，3： | 1 |
| 13 | The relationship between 24-hour blood pressure readings,subcortical ischemic lesions,and vascular dementia显示文摘 | Yamamoto Y Akiguchi I Oiwa K | 2005 | Cerebrovasc Dis2005，19，5： | 1 |
| 14 | A case of infantile acute monocytic leukemia caused by vertical transmis- sion of the mother's leukemic cells显示文摘 | Osada S Horibe K Oiwa K | 1990 | Cancer1990，65，： | 1 |
| 15 | Hand-operated translation stage with subnanometer resolution 显示文摘 | OIWA T SENJO M NAKAJIMA M | 2005 | Review of Scientific Instruments2005，76，7： | 1 |
| 16 | Dopaminergic neuroprotection and regeneration by neurturin assessed by using behavioral, biochemical and histochemical measurements in a model of progressive Parkinson's disease 显示文摘 | Oiwa Y Yoshimura R Nakai K | 2002 | Brain Res2002，947，2： | 1 |
| 17 | Adverse effectof nighttime blood pressure on the outcome of lacunar infarctpatients 显示文摘 | YAMAMOTO Y AKIGUCHI I OIWA K | 1998 | Stroke1998，29，3： | 1 |
| 18 | Backlight Imaging Tomography for Gas-Liquid Two-phase Flow in a Heli- cally Coiled Tube 显示文摘 | Murai Y Oiwa H Sasaki T | 2005 | Measurement Science and Technology2005，16，14： | 1 |
| 19 | Mechanical Properties of Diallyl Phthalate Resins Co-cured Microheterogeneously with Vinyl Monomers Having Long-chain Alkyl Groups显示文摘 | Akira Matsumoto Kazuhiro Aoki Masayoshi Oiwa | 1983 | Polymer Bulletin1983，，10： | 1 |
| 20 | 显示文摘 | Oiwa 5 Yoshimura R Nakai K | 2002 | Brain Res2002，947，2： | 1 |
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