Python青年羊机器学习化学化工材料有机化合物预测线性回归交叉验证随机森林tensorflow keras神经网络g Candidatus Saccharimonas g Ruminococcus gauvreauii group g Streptococcus g Bifidobacterium g norank f F082g Prevotellaceae UCG003g Prevotella1g Butyrivibrio2g unclassified f Rikenellaceae g Succinivibrionaceae UCG001WG ADG Acetate Propionate Isobutyrate Butyrate Isovalerate Valerate Total VFA Acetate p Propionate p Isobutyrate p A P ratio Lactate NH3N深度学习机器学习人工智能numpy pandas sklearn数据分析数据挖掘