分类系统
- 与 分类系统 相关的网络例句 [注:此内容来源于网络,仅供参考]
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From the artistic typological perspective, this paper expounds the logical and the natural classification systems of art.
本文从艺术类型学出发,系统阐述了艺术的逻辑分类体系和自然分类体系。
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This paper study systematically text automatic categorization from these ways including text pretreatment, vector model representation, feature selection and classify methods.
本文从文本预处理,文本的向量模型表示,特征降维方式和分类算法几个部分较系统的研究了文本自动分类。
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In order to identify plants better, the identification of the plants is more and more important, along with it, plants taxonomy is brought, the taxonomy of plants researches classification of all plant species, the relative between different species and the nature system of vegetable kingdom.
为了能更好的运用植物与识别植物,对植物的分类与识别,越来越体现出其重要性。因此产生了植物分类学的说法,植物分类学是研究植物类群的分类、探索植物间的亲缘关系和阐明植物界自然系统得科学。
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This paper will analyze the reason that the performance of imbalanced data is weak,and improve this classical Boosting algorithm by restraining from overfitting and controlling the F-Measure of minority class,and propose an improved algorithm named RIFBoost,and then compare this new algorithm with some traditional classified algorithms on WEKA system.
从分析非平衡数据分类性能差的原因入手,通过抑制过度拟合与对少数类的F度量的控制对经典推进算法进行改进,提出了一种改进算法RIFBoost,然后将算法在WEKA系统上与几个传统的分类算法进行了比较。
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The winnow classifier was suitable for systems which had limited resources and needed to be renewed at intervals.
系统采用了平衡winnow算法,该算法具有分类速度快、性能好以及支持在线更新的优点,适用于手机终端资源有限、需要实时或者定期更新分类器的情况。
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Those four classification models work well in first class of Chinese Vegetaion Division. The KAPPA value of Holdridge Life Zone System,at high value of 0.57,would probably more effective than the others. But in specific area,like tibetan plateau,all of those models need to be refined or consider more elements and factors. This research also points out that the concept and technology of Digitall Earth would promote and push forward the climate-vegetation relationship research,especially in climate-vegetation factors,climatically parameters and modeling parameters,real time dynamic monitoring,effectively managing the magnitude data of climate-vegetation relationship information and supporting the mainframe of Functional Types Modeling Library.
这四个传统的分类方法在中国植被区划一级分类上是适用的,Holdridge生命地带系统KAPPA一致性指数达到0.57模拟效果优于其它三者,但在特定地区,如青藏高原,所有模型均需改进优化或启用新的模型因子才能很好地区分植被亚地带,本研究还指出,数字地球技术的应用有助于推动气候—植被关系的研究,尤其在气候—植被指标的大范围实的动态监测、气候—植被关系数据的海量信息高效、有序基础管理和功能模型库支撑框架体系方面。
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The main works of this paper include four points as follows:(1) Patent retrieval domain ontology is designed through analyzing the common concepts in searching patent information. And the international patent classification table is expressed using ontology;(2) Design users'interests model from the information actively provided by users and passively provided by system based on users'requirements and historical searching record;(3) Design and implement three patent retrieval modes: quick search, table search, and advance search to meet various users'demands. And combine ontology, user's interest model and the inputed retrieval condition when users search for patent informations. This realizes individualized retrieval which meets the demands of users;(4) When users's search term is inaccurate, the precision will drop markedly and users will receive many disrelated informations.
本文的主要工作包括以下四点:(1)通过分析专利检索的常用概念,设计了专利检索领域本体和国际专利分类表(International Patent Classification,IPC)的本体表示;(2)根据用户的需求以及历史检索记录,从用户主动提供和系统被动学习两方面着手,设计了用户兴趣模型的本体表示;(3)为满足不同层次、不同需求的用户,设计并实现了三种专利检索方式:快速检索、表格检索、高级检索,并将本体、用户兴趣模型、用户输入的检索条件三者相结合,实现满足用户需求的个性化检索;(4)通过设计将检索结果按IPC号分类,由用户自主选择需要浏览的类别来为用户提供个性化服务。
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Based on 28 coding morphological characters, 66 species-samples of the genus Erysiphe of China were conducted on systemic cluster analysis by UPGMA in order 10 study the classification at the species level objectively.
为了从现有的白粉菌属分类特征体系出发,客观地研究和评价中国白粉菌属的种级分类,根据28个形态学编码性状对66个物种样本进行了类平均法系统聚类分析。
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In the geographical-genetic system of soil classification, the zonal soils in the tropical and subtropical China were divided into dry red soils, red soils, yellow soils, laterites and lateritic red soils.
从80年代开始,我国土壤科技工作者结合我国实际,引入了土壤系统分类。这一分类的特点是根据土壤诊断层和诊断特性划分土壤类型。
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This paper analyzes Web security mining problem in distributed real-time network behavior monitoring system. An auto classifier based on Web minning was designed and implemented. An experiment environment to test the performance of the classifier was constructed.
分析分布式实时网络行为监控系统中Web网页安全性挖掘问题,设计实现一个基于Web挖掘的自动分类器,并构造一个实验环境来检测分类器的性能。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。