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Learnware:small models do big

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Science China(Information Sciences) 2024年第1期67卷 39-50页

作者： zhi-hua ZHOU zhi-Hao TAN National Key Laboratory for Novel Software Technology Nanjing University

There are complaints about current machine learning techniques such as the requirement of a huge amount of training data and proficient training skills,the difficulty of continual learning,the risk of catastrophic forgetting,and the leaking of data privacy/*** research efforts have been focusing on one of those concerned issues separately,paying less attention to the fact that most issues are entangled in *** prevailing big model paradigm,which has achieved impressive results in natural language processing and computer vision applications,has not yet addressed those issues,whereas becoming a serious source of carbon *** article offers an overview of the learnware paradigm,which attempts to enable users not to need to build machine learning models from scratch,with the hope of reusing small models to do things even beyond their original purposes,where the key ingredient is the specification which enables a trained model to be adequately identified to reuse according to the requirement of future users who know nothing about the model in advance.

关键词： artificial intelligence machine learning learnware

Learnware： on the future of machine learning

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Frontiers of Computer Science 2016年第4期10卷 589-590页

作者： zhi-hua ZHOU National Key Laboratory for Novel Software Technology Nanjing University Nanjing 210023 China

Current machine learning techniques have achieved great success; however, there are many deficiencies. First, to train a strong model, a large amount of training examples are required, whereas collecting the data, particularly data with labels, is expensive or even difficult in many real tasks. Second, once a model has been trained, if environment changes, which often happens in real tasks, the model can hardly perform well or even become useless. Third,

关键词： Learnware future machine learning

Abductive learning: towards bridging machine learning and logical reasoning

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Science China(Information Sciences) 2019年第7期62卷 220-222页

作者： zhi-hua ZHOU National Key Laboratory for Novel Software Technology Nanjing University

In the history of artificial intelligence research,machine learning and logical reasoning have almost been separately developed. It is often argued that advanced intelligent technologies would emerge when machine lear... 详细信息

关键词： pro towards bridging machine learning and logical reasoning Abductive learning

高电压正极材料LiFe_(0.06)Ni_(0.94)PO_(4)/C的制备及其性能研究

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现代化工 2025年第1期45卷 184-189页

作者：李志义孙赫孙海礼魏炜刘凤霞刘志军大连理工大学流体与粉体工程研究设计所辽宁大连116024

磷酸镍锂(LiNiPO4)是一种具有5.1 V高电压平台的橄榄石类锂离子电池正极材料,由于较低的电导率和实际放电比容量限制了其实际应用。为了制备纯相LiNiPO4,考察了不同摩尔比表面活性剂油胺对LiNiPO4的影响,油胺添加摩尔比[n(油胺)∶n(金... 详细信息

磷酸镍锂(LiNiPO4)是一种具有5.1 V高电压平台的橄榄石类锂离子电池正极材料,由于较低的电导率和实际放电比容量限制了其实际应用。为了制备纯相LiNiPO4,考察了不同摩尔比表面活性剂油胺对LiNiPO4的影响,油胺添加摩尔比[n(油胺)∶n(金属)]为10∶1制备的材料结晶度最佳,经过煅烧工艺参数优化成功获得纯相LiNiPO4。为了改善LiNiPO4的电化学性能,首次采用乙基纤维素为碳源制备的掺有Fe摩尔分数为6%的LiFe0.06Ni0.94PO4/C并将其电化学性能与纯相LiNiPO4进行比较,结果表明,采用乙基纤维素制备的LiFe0.06Ni0.94PO4/C具有更大的初始放电比容量、更小的电荷转移电阻,其中10%乙基纤维素添加量的样品电化学性能最佳。

关键词：磷酸镍锂油胺乙基纤维素碳包覆电化学性能

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中药红花与产纤溶酶菌株相互影响的研究

四川大学学报（自然科学版） 2004年第2期41卷 395-398页

作者：冯志华孙启玲米坤罗强魏琪高婷四川大学生命科学学院四川成都610064 乐山师范学院环境与生命科学系四川乐山614004

作者采用生长曲线法衡量不同浓度红花对产纤溶酶菌株C2 13的生长影响;纤维蛋白平板法测量纤溶酶活性;邻二氮菲 Fe2+氧化法测量羟自由基清除率;乙酸酐直接测定法测量总胆固醇;HPLC法分析发酵产物.结果表明:产纤溶酶菌株C2 13能显著提高... 详细信息

作者采用生长曲线法衡量不同浓度红花对产纤溶酶菌株C2 13的生长影响;纤维蛋白平板法测量纤溶酶活性;邻二氮菲 Fe2+氧化法测量羟自由基清除率;乙酸酐直接测定法测量总胆固醇;HPLC法分析发酵产物.结果表明:产纤溶酶菌株C2 13能显著提高红花降血清总胆固醇的功效以及抗羟自由基氧化的能力;一定浓度红花的加入对C2 13的生长和纤溶酶活性有明显促进作用.HPLC分析还观察到红花经发酵炮制后,其成分发生了改变.说明中药红花与产纤溶酶菌株C2 13可相辅相成,互相促进.

关键词：红花地衣芽孢杆菌发酵炮制纤溶酶

Rehearsal:learning from prediction to decision

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Frontiers of Computer Science 2022年第4期16卷 1-3页

作者： zhi-hua Zhou National Key Laboratory for Novel Software Technology Nanjing UniversityNanjing210023China

Machine learning[1]studies focus mostly on prediction,where a model is built from a set of observational data formaking correct predictions on unseen *** has beenaddressed very well by modem techniques such as deeplea... 详细信息

关键词： such has see

A Characterization of Generalized Frame MRAs Deriving Orthonormal Wavelets

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Acta Mathematica Sinica,English Series 2006年第4期22卷 1251-1260页

作者： zhi hua ZHANG Department of Mathematics University of California Davis California 95616 USA

In 2000, Papadakis announced that any orthonormal wavelet must be derived by a generalized frame MRA （GFMRA）. In this paper, we give a characterization of GFMRAs which can derive orthonormal wavelets, and show a gen... 详细信息

关键词： orthonormal wavelets generalized frame MRA non-MRA wavelets

Local Analysis, Cardinality, and Split Trick of Quasi-biorthogonal Frame Wavelets

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Acta Mathematica Sinica,English Series 2011年第1期27卷 203-218页

作者： zhi hua ZHANG College of Global Change and Earth System Science Beijing Normal University Beijing 100875 P. R. China

The notion of quasi-biorthogonal frame wavelets is a generalization of the notion of orthog- onal wavelets. A quasi-biorthogonal frame wavelet with the cardinality r consists of r pairs of functions. In this paper we first analyze the local property of the quasi-biorthogonal frame wavelet and show that its each pair of functions generates reconstruction formulas of the corresponding subspaces. Next we show that the lower bound of its cardinalities depends on a pair of dual frame multiresolution analyses deriving it. Finally, we present a split trick and show that any quasi-biorthogonal frame wavelet can be split into a new quasi-biorthogonal frame wavelet with an arbitrarily large cardinality. For generality, we work in the setting of matrix dilations.

关键词： Local analysis cardinality split trick quasi-biorthogonal frame wavelets

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

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Frontiers of Structural and Civil Engineering 2023年第7期17卷 981-993页

作者： zhi sun Limin sun Ye XIA State Key Laboratory for Disaster Reduction in Civil Engineering Shanghai 200092China Department of Bridge Engineering Tongji UniversityShanghai 200092China

This study modeled the moving-vehicle-induced forcing excitation on a single-span prismatic bridge as a multiple frequency-multiplication harmonic load on the modal coordinates of a linear elastic simple Euler–Bernoulli beam,and investigated the forced modal oscillation and resonance behavior of this type of dynamic *** forced modal responses consist of multiple frequency-multiplication steady-state harmonics and one damped mono-frequency complementary *** analysis revealed that a moving load induces high-harmonic forced resonance amplification when the moving speed is *** verify the occurrence of high-harmonic forced resonance,numerical tests were conducted on single-span simple beams based on structural modeling using the finite element method(FEM)and a moving sprung-mass oscillator vehicle *** forced resonance amplification characteristics of the fundamental mode for beam response estimation are presented with consideration to different end restraint *** results reveal that the high-harmonic forced resonance may be significant for the investigated beams subjected to vehicle loads moving at specific low *** the investigated single-span simple beams,the moving vehicle carriage heaving oscillation modulates the beam modal frequency,but does not induce notable variation of the modal oscillation harmonic structure for the cases that vehicle of small mass moves in low speed.

关键词： forced vibration linear Euler beam moving load harmonic structure frequency modulation end restraints