sampling cluster 中文意思是什麼

sampling cluster 解釋
成團抽樣
  • sampling : n. 1. 取樣(品),取標(本)〈指行動或程序〉。2. 樣品,標本。3. 剽竊拼湊歌曲。
  • cluster : n 1 叢集;叢;(葡萄等的)串,掛;(花)團;(秧)蔸;組。2 (蜂、人等的)叢,群,群集。3 【物理...
  1. In accordance with the problem that the fcm algorithm is quite time - consuming for search out cluster cancroids and may not be suitable for on - line modeling and control. this dissertation proposed an improved fuzzy identification method based multistage random sampling fuzzy c - means clustering algorithm ( mrfcm ). it has higher approximate precision and the cpu time has slowed down sharply compared with the common fuzzy

    Johnyen和liangwang介紹了幾種應用於模糊模型的信息優化準則,本論文在此基礎上對統計信息準則進行一些改進,並與快速模糊聚類和正交最小二乘方法結合,提高了模型的辨識精度和泛化能力。
  2. The regression estimator in cluster random sampling

    整群抽樣回歸估計量
  3. Methods descriptive analysis was conducted among 818 medicos, who were sampled by stratified cluster sampling, and the model was established

    方法採用分層整群抽樣的方法,對某醫科大學818名醫學生心理健康狀況的一般情況進行描述性分析,並擬合結構方程模型。
  4. In this text, we first do some research on the genetic algorithm about clustering, discuss about the way of coding and the construction of fitness function, analyze the influence that different genetic manipulation do to the effect of cluster algorithm. then analyze and research on the way that select the initial value in the k - means algorithm, we propose a mix clustering algorithm to improve the k - means algorithm by using genetic algorithm. first we use k - learning genetic algorithm to identify the number of the clusters, then use the clustering result of the genetic clustering algorithm as the initial cluster center of k - means clustering. these two steps are finished based on small database which equably sampling from the whole database, now we have known the number of the clusters and initial cluster center, finally we use k - means algorithm to finish the clustering on the whole database. because genetic algorithm search for the best solution by simulating the process of evolution, the most distinct trait of the algorithm is connotative parallelism and the ability to take advantage of the global information, so the algorithm take on strong steadiness, avoid getting into the local

    本文首先對聚類分析的遺傳演算法進行了研究,討論了聚類問題的編碼方式和適應度函數的構造方案與計算方法,分析了不同遺傳操作對聚類演算法的性能和聚類效果的影響意義。然後對k - means演算法中初值的選取方法進行了分析和研究,提出了一種基於遺傳演算法的k - means聚類改進(混合聚類演算法) ,在基於均勻采樣的小樣本集上用k值學習遺傳演算法確定聚類數k ,用遺傳聚類演算法的聚類結果作為k - means聚類的初始聚類中心,最後在已知初始聚類數和初始聚類中心的情況下用k - means演算法對完整數據集進行聚類。由於遺傳演算法是一種通過模擬自然進化過程搜索最優解的方法,其顯著特點是隱含并行性和對全局信息的有效利用的能力,所以新的改進演算法具有較強的穩健性,可避免陷入局部最優,大大提高聚類效果。
  5. Based on the review of and comment on the concepts and theories of attitude and travel attitude and the current research situations about travel attitude, according to three element theories of the attitude, by way of random sampling of strata, the paper has carried on measurement of travel attitude of zhengzhou city, wuzhi county and yuanyang county resident. in writing this paper, the author designed a travel attitude inventory, which had been proved to be of good reliability and validity. then it carries on factor analysis and cluster ' s analysis to the measurement

    本研究在對態度、旅遊態度的概念、理論和旅遊態度的研究現狀進行述評的基礎上,依據態度的三元素理論,採用經過信度、效度檢驗的自編旅遊態度問卷,以分層隨機抽樣的方式,對鄭州市、武陟縣和原陽縣居民的旅遊態度進行了測量,並對測量數據進行因素分析和聚類分析。
  6. Clustering algorithm based on random - sampling and cluster - feature

    基於隨機抽樣和聚類特徵的聚類演算法
  7. Methods : random cluster sampling method was used. 2763 subjects were studied with a self - reported questionnaire

    方法:採用整群隨機抽樣方法,對2763名學生通過自填問卷的方式進行了調查。
  8. In order to study the awareness, treatment and control rates andthe risk factors of hypertension in qingdao rural residents, a cluster random sampling method was used

    為了調查青島農村居民高血壓的患病率、知曉率、服藥率、控制率及其影響因素,採用整群隨機抽樣法,對7個村的18歲以上居民進行血壓測量及相關因素調查。
  9. Methods a self - administered questionnaire was delivered to local residents in order to get information on the responsiveness of clinic patients. 4 communities, 202 local residents were recruited by cluster - randomized sampling

    方法採用整群隨機抽樣的方法抽4個社區,對一年內有住院經歷的加2名病人由調查員詢問並填寫調查表。
  10. Methods one thousand six hundred and sixteen children in school under 16 years old that were sampled in cluster sampling were examined with dental fluorosis, x - ray in the type of burning coal pollution fluorosis areas of zhijin county guizhou province

    方法按照整群隨機抽樣方法從貴州省織金縣隨機選擇16歲以下的在校學生1616人,進行氟斑牙和x線檢查。
  11. In order to understand the childhood behavior disorder and suicide ideation in primary school studens in changsha city, and to identify factors affecting childhood behavior disorder and suicide ideation of children, 1060 primary school students, 796 persons from urban areas and 264 from rural area, were randomly sampled from six primary schools in changsha by multiple cluster sampling

    為了了解長沙市城鄉小學生的行為問題、自殺意念以及它們的影響因素,本研究採用多級整群隨機抽樣法,在長沙市城鄉隨機抽取六所學校的1060人(城市796人,鄉村264人)為研究對象。
  12. Methods stratified cluster sampling was employed and 10 811 residents in heyuan, meizhou, shenzhen, zhanjiang, chaoyang, guangzhou, qingyuan, shaoguan were investigated in 2006

    方法2006年,採用分層整群抽樣方法對河源、梅州、深圳、湛江、潮陽、廣州、清遠、韶關8個地區進行了抽樣調查。
  13. Using the cluster analysis method and studying 16 sampling plots of shrub grassland where bothriochloa ischaemum is the dominant species, and the plots ' grass frequency, grass coverage, density, height, and biomass, we graded the plots into five grazing stages : light, proper, moderate, serious, and extreme

    摘要在對放牧利用下的白羊草灌叢草地頻度、蓋度、密度、高度、生物量等數量特徵調查基礎上,運用系統聚類分析方法,可戒分為輕放、適牧、中牧、重牧和極牧五個階段。
  14. A survey using a cluster sampling of adolescence was conducted to investigate the characteristics of self - disclosure and self - concealment in adolescence and the relationship between them and subjective well - being. 691 adolescents participated in filling in an anonymous questionnaire

    摘要採用問卷調查的方法,對691名初一至大四學生的自我表露和自我隱瞞特點及其與主觀幸福感的關系進行了研究。
  15. Simple cluster sampling

    簡單整群抽樣
  16. This paper discusses cluster sampling and stratified cluster sampling in continuous surveys with censuses

    摘要本文討論了連續調查中應用普查方法時的整群抽樣和分層整群抽樣。
  17. Methods using cluster sampling, the study was conducted in a secondary technical school in hefei, and the available questionnaire were analysed

    方法採用整群抽樣的方法在合肥市某中專學校進行問卷調查,並對有效問卷進行統計分析。
  18. Methods : cluster sampling was introduced and the usage of antibiotics was investigated retrospectively from jan 2004 to dec 2006

    方法:採用整群抽樣的方法,回顧性地調查本院2004年1月2006年12月婦產科住院患者抗菌藥物的使用情況。
  19. Methods 1 078 eligible subjects from different economic areas were selected by stratified cluster sampling in wuhan city and yichang country

    方法採用分層整群抽樣的方法分別選取武漢市城區、宜昌市農村經濟水平不同的社區進行人戶調查。
  20. Methods by using the cluster sampling method, a sample of 518 students drawn from 4 high schools in chuzhou, then a questionnaire survey was conducted among them

    方法採取整群抽樣方法對滁州市4所高中三年級畢業班學生518名進行問卷調查。
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