sampling cluster中文什么意思

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用"sampling cluster"造句

成團(tuán)抽樣

sampling: n. 1.取樣(品)，取標(biāo)(本)〔指行動(dòng)或程序〕。 2. ...
cluster: n. 1.叢集；叢；(葡萄等的)串，掛；(花)團(tuán)；(秧) ...
cluster sampling: 成串采樣; 叢聚抽樣; 分群抽樣; 分組抽樣; 分組取樣; 集團(tuán)抽樣; 聚類抽樣; 類集抽樣; 密集取樣; 群集抽樣; 群組抽樣; 整群抽樣
cluster random sampling: 分群抽樣法; 整群隨機(jī)抽樣
simple cluster sampling: 單純整群抽樣

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Besides , considering the differences of the galactic gravitational potential models , there is different influence for the distribution morphologies of all of the orbital parameters of the selected sample clusters
此外，不同的銀河系引力勢(shì)模型對(duì)所選樣本的軌道參數(shù)的分布形態(tài)也有不同程度的影響。
The differences in orbital morphologies due to different potentials is slighting , however , given a certain potential , for clusters that have perigalactic distance smaller than 1 kpc , some orbits may exhibit a chaotic behavior . the correlation between the metallicity of samples and the orbital morphologies is unclearly ; ( 4 ) it is found that the semi - major axis , apogalactic distance and azimuth period of 29 sample clusters are changed with their metallicity similarly , but a obvious correlation is seen between orbital eccentricity and metallicity . there is a fraction of 24 % of the sample clusters with eccentricities lower than 0 . 4
不同的引力勢(shì)模型對(duì)球狀星團(tuán)軌道的具體形態(tài)影響不大，在給定的引力勢(shì)模型下，當(dāng)某些星團(tuán)的運(yùn)動(dòng)軌道穿越距銀心1kpc附近的區(qū)域時(shí)會(huì)出現(xiàn)“混沌”現(xiàn)象： ( 4 ) 29個(gè)樣本星團(tuán)的軌道半長(zhǎng)軸、遠(yuǎn)銀心距和方位周期隨金屬度的變化規(guī)律基本相似，樣本星團(tuán)的金屬度與其軌道形態(tài)之間的相關(guān)性并不明顯，然而軌道偏心率與金屬度有關(guān)，對(duì)于所選的暈族樣本星團(tuán)而言，大約有24的樣本星團(tuán)的軌道偏心率低于0 . 4 。
The simulation tests result indicates that the speed and precision of sample training are increased because of sample clustering for fuzzy modular networks . and the problem of slow training speed and local minimum point are avoided when bp networks are applied in the fault diagnosis of complex boiler
本文所建的用于鍋爐故障診斷的模糊模塊化神經(jīng)網(wǎng)絡(luò)模型因進(jìn)行了樣本聚類，實(shí)驗(yàn)結(jié)果表明：其網(wǎng)絡(luò)訓(xùn)練的速度和精度明顯提高，同時(shí)有效地解決了bp網(wǎng)絡(luò)應(yīng)用于復(fù)雜的鍋爐系統(tǒng)故障診斷時(shí)，存在訓(xùn)練收斂慢并容易陷入局部最小點(diǎn)的問(wèn)題。
In this paper , the near - infrared spectral measurement and principal component analysis ( pca ) of simulated spilled petroleum samples are made , the princpal component scores are taken as the cluster characteristic variables for making fuzzy clustering , the near infrared spectrometry and pca together with fuzzy clustering method are then used for rapid recognition of simulated spilled oils , and the sample clustering and recognition patterns are established
摘要對(duì)模擬溢油的石油類樣品進(jìn)行近紅外光譜檢測(cè)并進(jìn)行了主成分分析，以主成分得分作為聚類的特征變量進(jìn)行模糊聚類，采用近紅外光譜測(cè)量結(jié)合主成分分析和模糊聚類法快速識(shí)別模擬溢油種類，并建立了樣品聚類與識(shí)別模型。
The calculating results show : ( 1 ) most of samples are located in 5 kpc - 10 kpc from galactic center . all of the sample clusters present a spherical symmetrical distribution around the galactic center , and their space velocities are presented a ellipsoidal distribution ; ( 2 ) according to the metallicity and basic characters , the sample clusters are separated into hb subgroup and mp subgroup . the number of samples are changed with metallicity [ fe / h ] , and there is a peak at [ fe / h ] = - 1 . 6 ; ( 3 ) the orbits of sample clusters show mostly limited , periodic characteristics , but the orbits are not closed completely , their maximal galactocentric distance is less than 40 kpc
計(jì)算結(jié)果表明： ( 1 )大部分樣本星團(tuán)都位于銀心距5kpc 10kpc的范圍內(nèi)，相對(duì)于銀心呈球?qū)ΨQ分布，它們的速度也呈橢球分布； ( 2 ) 29個(gè)樣本星團(tuán)按其金屬度大小和基本性質(zhì)分類，可分屬hb和mp兩個(gè)球狀星團(tuán)次系，且樣本星團(tuán)數(shù)隨金屬度[ fe h ]而變化，在[ fe h ] = - 1 . 6處出現(xiàn)一個(gè)峰值； ( 3 )所有樣本星團(tuán)的軌道運(yùn)動(dòng)都呈周期性，大都在一個(gè)有界而不封閉的周期軌道上運(yùn)動(dòng)，其最大銀心距都在40kpc以內(nèi)。

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sampling cluster中文什么意思

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