i don't know the grammar whether is right. could you help me , please! Literature review of domestic quantitative investment research Because quantitative investment has stable and good returns, investors are more and more popular.In recent years, the number of academic journals in quantitative investment research has been increasing, especially the multi-factor strategy in quantitative investment is widely used.But many of the descriptions of quantitative investments can only provide new ideas for research by institutional investors, which are not only too esoteric for individual investors, but also very complicated to operate.Therefore, this paper summarizes the relevant theories of quantitative investment and collects the development status of quantitative investment, and provides theoretical support for the follow-up of quantitative stock selection model which is conducive to the operation of individual investors.

i am badly in need of help again! could you correct my grammar,please! A simple model of choice stock is constructed using multifactor strategy Quantitative investment is technique that introduce the American capital market , with China's continuous development of computer technology and its stable income, by China's increasingly wide attention of academia and practice.But it has highly demand for knowledge such as computers and mathematics, institutional investors can really use the theory of quantitative investment and ordinary investors just few use it. In this paper, we hope to use the existing quantitative platform to construct a more feasible and understandable quantitative stock selection model for individual investors.This paper firstly introduces the related theory of quantitative investment and use of the rules of the platform for the quantitative program. secondly we will construct multifactorial strategy that relative to the single factor is more stability strategies , and use the quantitative platform to measure our factor.The factor will be choose as effective factor that the size of the profitability of the stock is greater than 0. According to the strength of the effective factor and shares profitability, we separated three groups that high, middle and low.Finally stocks will be put in chinese a share that selected from the three groups ,we will observe the relationships between excess earnings and factors over a period of time and then make a conclusion .In the end, we conclude that individual investors should choose the higher profitability model. 量化投资作为从发达的美国资本市场引入的一种投资技术，正随着中国计算机技术不断发展和其稳定的收益，日益受到中国学术界和实务界的广泛关注。但是由于其对计算机，数学等知识的高要求，使得真正在利用量化投资理论进行选股的只有机构投资者，普通投资者对此只能望尘莫及。本文希望借助已有的量化平台，利用其给出的程序规则，为个人投资者构造出相对来说比较可行易懂的量化选股模型。本文首先介绍了量化投资的相关理论和使用的量化平台程序的规则，其次选用相对于单因子稳定性更好的多因子策略来构造我们的模型，并利用量化平台测算出我们因子与股票的收益性的大小选取大于0的因子作为我们的有效因子，根据有效因子与股票收益性的强弱我们分出高中低三组因子组合。最后将利用三组组合选出的股票放入到我们的A股市场，观察它们在一段时间内获得的超额收益与因子间呈现何种关系进而做出我们的结论。最终我们得出结果是个人投资者应多选用高等收益模型进行选股。

please help me! beg you! 求大神帮翻一下 找下错误 着急交作业 Firstly this paper introduces the related theory of supply chain, secondly the metersbonwe group co., LTD is this papei example,and its supply chain is analyzed which has important influence on information system, supply chain partners, logistics system and product design. we want to find out the metersbonwe group co., LTD., the defects of supply chain management. Finally the method of using flexible supply chain optimize the metersbonwe group co., LTD. Supply chain management and increase in information system, partners, the logistics system and the flexibility of product design. The metersbonwe group co., LTD. of ability that cope with uncertainty of supply chain is improved. 本文首先介绍了供应链的相关理论，然后以美特斯邦威集团有限公司为例，通过对美特斯邦威集团有限公司供应链有重要影响的信息系统、合作商、物流体系和产品设计分析，找出美特斯邦威集团有限公司供应链管理中存在的不足，最后利用柔性供应链的方法对美特斯邦威集团有限公司供应链管理进行优化，增加信息系统、合作商、物流体系和产品设计的柔性，提高美特斯邦威集团有限公司供应链应对不确定性因素的能力。

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