invalid cluster 中文意思是什麼
invalid cluster
解釋
無效簇-
Finally, the paper classified the oil freight market index system into prior index group and posterior index group with cluster analysis method, furthermore, the prior index group and posterior index group were changed into 5 main factors with factor analysis method, which including prior synthesis factor, oil demand factor, oil price factor, invalid tonnage factor, tonnage supply factor. by using these 5 factors, we can analysis the oil freight market more clearly and effectively
最後，本文確立了油運費率市場指標體系，應用聚類分析方法將其劃分為先行指標組和滯后指標組，並進一步應用因子分析方法，將先行指標組和滯后指標組轉化為五個主成分因子：先行綜合因子、石油需求變化因子、石油價格變化因子、無效運力因子和運力供給因子，找出了影響油運費率市場變化的主要因素，應用這五個主成分因子可以對油運費率市場進行更加清楚、有效的分析。
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