查询词典 portfolio selection

So it couldn't fit dynamic network environments soundly. After investigating of negative selection, affinity mature and memory detector evolution mechanisms, it is Embedded Negative Selection Operator Clonal Selection Algorithm presented combined with negative selection, clonal selection and memory detector gene library evolution.

本文结合网络入侵检测的上述问题，深入研究了否定选择、亲和力成熟过程以及免疫记忆机制等，以现有克隆选择算法为主体，将否定选择、克隆选择、记忆检测器基因库方法融合进来，提出嵌入否定选择的克隆选择算法(Embeded Negative Selection Operator Clonal Selection Algorithm， ENCSA)。

The system implemented forest fire model selection automatically and intelligently. BP artificial neural network model of forest fire model selection was build by treating forest fire environment data as inputting variable and treating appropriate forest fire model as outputting variable. At the same time, we studied the methods of acquiring and calculating data of inputting and outputting. The system implemented machine of model selection automatically based on dynamic data driven technology. We selected 72 items experimental data from historical forest fire records in Beijing to experiment and confirm the validity of model selection. It turned out that the reliability of model selection is more than 80 percent.

3基于BP人工神经网络方法设计了林火模型适宜性选择技术框架结构，通过神经网络形成林火模型选择知识，实现了林火模型的自动化和智能化选择；以火场环境因子为输入变量，以适宜火场环境模拟的林火蔓延模型作为输出变量，构建了林火模型选择神经网络模型；研究了输入、输出因子数据的获取与计算方式，实现了动态数据驱动的林火模型自动选择机制；以本京市为例，选择了有详细火场情况记录的72场林火作为实验样本，其中60条记录作为学习样本集，12条记录作为验证样本，对神经网络进行了学习和验证，实验结果表明，模型选择精度可达到80%以上。

Chapiter 2 discusses the theory of assets portfolios, which starts to analyze investor, arid deduces framed investor"s feasible set arid efficient set, discUss different forms and characteristic of efficient portfolio, and systematic analyzes the effect of portfolio, risk diversification, followed briefly summarizes the formation, development, application and limit of the "theory of portfolio, created by Markowitz.

本章从投资者开始分析，给出了框定投资者的可行集和有效集，并讨论了各种不同的有效组合类型及其性质，同时系统研究了资产组合的效应——风险分散，最后简要综述了马柯维茨投资组合理论的产生、发展、应用与局限。

We also find that among the three investment strategies we discussed – the momentum strategy, buying the top or the bottom decile portfolio of funds, adopting the momentum strategy gets a better Sharpe ratio if the emerging market, energy, and mineral funds are not considered. For the portfolio of emerging market, energy, and mineral funds, it is with better performance for the strategies of buying the top or the bottom decile portfolio of funds.

最后，以Sharpe ratio为比较各投资策略在各投资分类的基准，采取动能策略操作基金，在移除新兴、能源、矿业基金之投资组合中有较高的报酬；又以买入形成期表现最好及买入形成期表现最差的基金为操作策略时，在新兴、能源、矿业基金这一分类出现较佳之绩效。

Then we real result which can reflect the momentum profit .Our analysis indicates that : the liquidity—weighted investment portfolio can get more profit than equal-weighted investment portfolio, even after adjusted by price impact cost; but its profit fall behind in the market- value-weighted investment portfolio.

我们的实证分析结果显示：流动性加权投资组合的确能够获得比以往研究中广泛使用的等权重组合更好的收益，即使在价格冲击成本调整后仍然如如此；但其收益表现却一直弱于市值加权投资组合的收益表现，这个结果是和国外成熟市场的研究结果是相反的。

Scorecards is one of the key benefits of the Portfolio Management solution in that it enable you to identify the opportunities within a portfolio and Portfolio Manager has the capability of having hierarchical portfolios so you can look at portfolios and the items within those portfolios and you will see from this slide that the scored these rankings and scorings are based on your organization that developed and can be very complex key performance indicators that are driven by a formula that can be coded very straightforwardly in the software.

记分卡是组合管理解决方案的主要优势之一，因为通过它可以识别组合里的机会，而组合管理器则能区分组合层次，因此可以查看组合以及其中的项目。从这张幻灯片可以看出，得到的这些排名和得分是基于开发组织的，并且可以是由公式驱动的非常复杂的关键绩效指标，而所用公式的编码亦可在软件里非常简单明了地进行。

FactSet's Portfolio Manager Workstation gives the portfolio manager or trust officer all of the tools needed to quickly look at how a portfolio has performed over time, using actual holdings and daily linked returns.

FactSet的Portfolio Manager的工作站，使投资组合经理人或信托干事所有必要的工具，迅速研究如何组合的表现随着时间的推移，用实际控股和日常联系的回报

Portfolio features the individual estimation, presentation and introspection as well as organizational development and achievement. For the purpose of the portfolio record, individuals are able to take it as the reference resources for future self-education by doing the self-estimation and self-examination. It could be applied to the an enterprise as a standard for human resource department to evaluate the recruitment, performance and promotion. Therefore, the portability and compatibility of Portfolio are very important nowadays.

中文摘要学习历程档具有评估、展示及反思个人或团队学习发展及成就累积的特性，藉由学习历程记录，可以由学习者自我评估、反思学习活动的广度与深度，以做为日后持续进修的参考，企业并可做为员工个人之任用、考绩与升迁的参考依据，因此学习历程的可携性及互通性格外引起重视。

It is because of the investment decision-making method based on the idea of decentralising risk as well as portfolio's extensive applications and its practical significance that portfolio theory occupies a remarkable position in Finance, but portfolio theory is far from perfect.

虽然证券组合理论因其分散风险的思想、所提供的投资决策方法和证券组合问题的广泛的用途与巨大的实际意义而在金融学中占据十分显赫的地位。

In this paper, we consider an optimal portfolio selection method based on maximizing risk-adjusted return on capital of the portfolio.

通过极大化风险调整后的资本收益率，建立了一个最优资产投资组合方案。

The Master of Science degree program in Economics features a curriculum that is flexibl...

在经济学理学硕士学位的课程计划的特点是灵活而全面的方法，在理论和应用课程培训工作。

This module is used for constructing and visualizing 3D models.

该模块是用于建设和可视化的三维模型。