查询词典 information retrieval

From the point of view of management information construction in building project quality measurement in view of this situation of so many measurement project complex calculation in measurement data, standard quickly renewing, powerful specialization of measurement method that exist and inquires in to the position and the effect of information in quality measurement, announces the relation of building project quality measurement management and information system, and has put forward the basic train of thought of building project quality measurement management information, system construction, At the same time, combining the building project quality measurement management information system construction . At the same time, combing the building project quality measurement management information system construction case of YIFENG company analyses and introduces the real application effect of management information system theory in the quality measurement management activity ,and betokens the enterprise information construction development direction..

本文从建筑工程质量检测管理信息化建设的角度，针对建筑工程质量检测管理上存在的检验项目多、检验资料计算复杂、标准更新快、评定指标和检验方法专业性强等因素，分析了建筑工程质量检测中存在的问题，探讨了管理信息化在质量检测工作中的地位和作用，揭示了建筑工程质量检测与信息系统的关系，提出了建筑工程质量检测管理信息系统建设的基本思路，同时，结合宜峰公司建筑工程质量检测管理信息系统建设的案例，分析介绍了管理信息系统理论在质量检测管理活动中的实际应用效果，预示出企业信息化建设发展方向。

A methodology of noise-like key generation is presented. Chaotic process of tentmap function is used as a deterministic generation of noise-like key, image storage and retrieval are completed in a algebraic form. A mathematics model of noise-like chaotic coding memory is constructed, meanwhile the basic mechanism of circulant convolution and circulant correlation in image information storage and retrieval are demonstrated.

在详细阐明数字序列和字母序列的1-D映射函数设计方法的基础上，利用构造出的1-D映射的稳定周期环和不稳定极限环完成了存储和联想记忆功能，为了识别有关的输入信息，提出了映射函数直接控制的方法；在此基础上，提出了一种1-D映射型混沌神经网络模型，该网络本身不当作一个"黑箱"处理，网络的参数值由网络中实现的映射函数来确定，该网络模型具有联想记忆、容错性、模式识别和奇异滤波等一系列智能信息处理的基本功能。

As early as the early 1990s, conducting large-scale foreign Set text retrieval tests will be made on the field of automatic abstracting text structure analysis for information seized request area to enhance the retrieval accuracy, and have done a series of studies, presents a simple and effective logic of the division algorithm : TextTiling algorithm.

早在90年代初期，国外在进行大规模文本集合检索试验时就提出将自动文摘领域的文本结构分析应用于信息检索领域以提高检索精度，并对此进行了一系列研究，提出了一种简单有效的逻辑段划分算法：TextTiling算法。

50 Is a standard network protocol of information retrieval, especially used in the fieldof online bibliographic retrieval.

9.50是网络信息检索的标准协议，目前主要应用于联机书目检索领域。

In this paper,the design and the implementation of a rule induction based IE system is presented for automating Web information retrieval by DOM parsing and rules for retrieval,extraction and mapping.

通过文档对象模型解析以及检索、抽取、映射等规则的定义，设计并实现了一种具有规则归纳能力的信息抽取系统，用于Web信息的自动检索。

In information retrieval,relevance feedback is an effective way to improve retrieval performance.

在信息检索领域，相关反馈是提高检索性能的有效方法之一。

The Search engine is not perfect because of the low retrieval efficiency, the high rate of mistakable or missing outcome, the large amount of returned information and the unsolved non-text document retrieval. The mode of "one search for all user", can't meet the user's individualized message requirements.

搜索引擎检索效率不甚理想，漏检误检率较高；返回信息量太大，非文本文件检索困难；"一个搜索适用所有用户"的模式，不能满足用户个性化信息需求。

Latent semantic index LSIis a new algebraic model for information retrieval, which maps documents and queries vectors into a lower dimensional space by singular value decomposition, so that the inherent vagueness associated with a retrieval process based on keyword sets is considerably reduced and semantic association among the documents is highlighted consequently.

隐含语义索引是一种新型的信息检索模型，它通过奇异值分解，将词向量和文档向量投影到一个低雏空间，消减了词和文档之间的语义模糊度，使得文档之间的语义关系更为明晰。

We construct the synthesis reasoning sources according to the multimedia object low-level features and the reasoning source intensity field according to the multimedia co-existence information. A series of multimedia semantic spaces are built by spectral method after synthesis reasoning. The cross-media retrieval is performed on a per-query basis by which different retrieval methods are adopted for different queries.

首先根据多媒体对象的底层特征构造推理源，根据多媒体对象的共生关系构造影响源场来进行综合推理，并构造出多媒体语义空间；然后针对不同检索例子，根据伪相关反馈为每一个检索例子自适应地选择不同的检索方法进行跨媒体检索。

The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的"同物异谱"现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被"红边"范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。