all-level sample 中文意思是什麼
all-level sample
解釋
全級試樣-
With the limitation of our learning level and objective case, the variables x1, x2, . ., xm being taken into account are only a part of all relevant variables. the other variables being ticked out may well be more important. so it is not plenty to think about the factor ' s influence on forecasting, the sample ' s information also play its role on forecasting
一般情況下，對因變量y有影響的因子往往為數極多，而由於我們的認識水平和客觀條件的限制，在問題中考慮進來的自變量x1 ， x2 ， . . . ， xm只是全部有關變量的一部分，其它未被考慮進來的變量完全有可能是更重要的，可見，僅僅著眼于因子對預測的影響顯然不夠，樣品信息也對預測起著重要作用，而且每個樣品對預測所起的作用還互不相同。 -
The attenuation indexes of vertical direction components and level radial components of blast earthquake wave in the condition of far range are all larger than the one in the condition of close range. based on upwards analysises, relevant control ways and safety defending technology of blast vibration are given from the aspects of blast equipments, blast parameters, landform physiognomy, blast methods. and taking the practical data from blast scene as the sample, the blast shockproofness are forecasted by the feedforward nerve network model based on the prior knowledge of blast shockproofness, the regress analysis method and experience formula method, which supply the technology gist for
並且，以爆破現場的實測數據為樣本，採用基於爆破震動強度先驗知識的前饋網路神經模型、回歸分析法及經驗公式法分別對爆破震動強度進行了預測研究，為爆破施工參數的確定提供了技術依據，確保整個爆破工程順利安全進行，並對這三種方法的預測結果進行了對比分析;對比分析表明，三種預測方法計算出來的結果精度相差甚大，從檢驗樣本值與預測結果值之間的相對誤差可以看出，人工神經網路法預測的結果較其他方法更接近於實際值，回歸分析預測法的精度又要高於經驗公式預測法。 -
In addition, the concept of scene centriod is introduced to represent video scene by averaging of all key frames inside a group of shots in the given video scene, which makes an audacious attempt for high - level video unit extraction and representation ; 4 ) according to the given sample video, shot and scene - based video retrieval methods are discussed respectively, and the evaluation pricinples are also discussed
進而，討論了由場景中一組鏡頭的關鍵幀的質心表示場景關鍵幀，即場景質心的方法，從而為抽取高層的視頻數據單元做出了大膽的嘗試； d ）從給定樣本視頻出發，分別討論了基於鏡頭和場景的視頻檢索方法，並分析了檢索性能評價的準則。
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