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The three classic models in information retrieval are called Boolean, vector, and probabilistic.

信息检索的三个经典模型分别是:布尔模型、向量模型和概率模型

According to the varied kinds of the retrieve models in the course of the design and our practical situation,we put forward a new information retrieve system combining the Boolean logical model and the Vector Space retrieve model,which is named extended weighting vector space retrieve model.

在系统的设计实现过程中,我们根据上文提到的不同检索模型,结合我们的实际情况,提出了一种结合布尔逻辑模型和空间向量模型的新的检索系统,即扩展的加权向量空间检索模型

After the discussion of the organization and data access of the data,the paper presents some pop kinds of information retrieve models nowadays,such as Boolean logical model,Vector Space retrieve model and Probability retrieve model.

在讨论了分布式环境中的数据组织和访问后,本文又具体讨论了现今几种主要的信息检索模型:布尔逻辑模型,向量空间模型,以及概率模型等。

This passage analyzes the advantage and disadvantage of the Boolean Model and the Vector Space Model in information retrieval model: the Boolean Model is simple to realize, but its classification ability is limited and the logic expression formula is strict.

本文分析了信息检索中传统文档特征表示的布尔逻辑模型和向量空间模型的优缺点:布尔逻辑模型虽机制简单、容易实现,但是它的分类能力有限且逻辑表达式过于严格;向量空间模型将文档映射到连续域向量空间,为进一步的权重计算等多元处理提供了基础,但容易忽略文档集合中各个文档的一些共有特征。

The influential soil constitutive models involving principal stress axes rotation, such as Matsuoka's model, kinematic hardening model, bounding surface model and the complete stress incremen...

对当前较有影响的含主应力轴旋转的土体本构模型(基于一般应力空间的土体本构模型、运动硬化模型、边界面模型、土体弹塑性应力应变关系的完全应力增量表述等等)进行了较为系统的评述。

SIR model can be studied using the theory of branching process.

概述了用复杂网络的理论来研究两个传染病模型,即SIR模型和SIS模型,以及在这两个模型中如何计算疾病的传播阈值。

In this paper, modification of the buoyancy terms in turbulence model has been carried out.

本文针对湍流模型中浮升力相关项的模型进行了比较分析,并在此基础上进行了一系列修正,最终的计算结果表明修正的湍流模型的表现明显优于传统湍流模型

Thirdly, Through the introduction of the Burckhardt road model 、Gim tire model、bus brake model and Time-domain model of road roughness ,ABS system with a fuzzy controller based on the slip rate deviation and deviation rate of change was designed. The ABS system on account of impacts of air suspension and road roughness were analyzed, and its result showed that air suspension system and braking system need joint control.

第三,通过引入了描述单轮特性的Burckhardt的路面模型、Gim轮胎模型、客车制动器模型和时域路面不平度模型,并在此基础上设计了基于滑移率偏差和偏差变化率的ABS模糊控制器,对计及空气悬架和路面不平度影响的ABS进行了分析,进而说明了空气悬架系统与制动系统进行联合控制的必要性。

We find that the bank will twist the loan capital amount of enterprise under the above two kinds of asymmetric information conditions.

在委托代理模型与信用市场模型、Krugman 的道德风险模型的对比中我们发现,由于各个模型的侧重点不同,出发的角度不同,因而对于银行与企业间契约的分析会有不同的结果。

There are two kinds of division laws: the model of simultaneous division and tree-like division. To use this method on engine, the mathematics model of fuel atomization carrying charge is established.

液滴荷电后分裂具有一定的规律,传统的数学模型可分为假设液滴分裂一次完成的数学模型和树状分裂数学模型,而考虑到发动机上的实际雾化情况,本文建立了燃油带电荷辅助雾化的数学模型

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

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我比喻得过头了。