我正在尝试在Python上执行此代码。这段代码指的是来自 sklearn 的 LDA。
import numpy as np
from sklearn.lda import LDA
X = np.array ([0.000000, 0.000000, 0.000000, 0.000000, 0.001550,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.201550, 0.011111, 0.077778,
0.011111, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.092732, 0.000000, 0.000000, 0.000000,
0.000000, 0.035659, 0.000000, 0.000000, 0.000000,
0.000000, 0.066667, 0.000000, 0.000000, 0.010853,
0.000000, 0.033333, 0.055556, 0.055556, 0.077778,
0.000000, 0.000000, 0.000000, 0.268170, 0.000000,
0.000000, 0.000000, 0.000000, 0.130233, 0.000000,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.034109, 0.077778, 0.055556, 0.011111,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.155388, 0.000000, 0.000000, 0.000000, 0.000000,
0.181395, 0.000000, 0.000000, 0.000000, 0.000000,
0.001550, 0.007752, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.011111, 0.088889, 0.033333,
0.000000, 0.000000, 0.142857, 0.000000, 0.000000,
0.000000, 0.000000, 0.093023, 0.000000, 0.000000,
0.000000, 0.000000, 0.000000, 0.009302, 0.010853,
0.000000, 0.100000, 0.000000, 0.000000, 0.000000,
0.000000, 0.022222, 0.088889, 0.033333, 0.238095,
0.000000, 0.000000, 0.000000, 0.000000, 0.032558,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.182946, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.022222, 0.077778, 0.055556,
0.000000, 0.102757])
y = np.array ([0.000000, 0.000000, 0.008821, 0.000000, 0.000000,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.179631, 0.010471, 0.036649,
0.026178, 0.000000, 0.000000, 0.020942, 0.010471,
0.000000, 0.109215, 0.000000, 0.000000, 0.060144,
0.000000, 0.042502, 0.000000, 0.005613, 0.000000,
0.000000, 0.018444, 0.000000, 0.000000, 0.013633,
0.020942, 0.031414, 0.083770, 0.015707, 0.041885,
0.041885, 0.057592, 0.010471, 0.233788, 0.000000,
0.000000, 0.018444, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.090617, 0.000000, 0.000000,
0.000000, 0.104250, 0.005236, 0.020942, 0.031414,
0.000000, 0.000000, 0.010471, 0.015707, 0.005236,
0.056314, 0.000000, 0.000000, 0.026464, 0.000000,
0.004010, 0.000000, 0.031275, 0.007217, 0.036889,
0.007217, 0.013633, 0.000000, 0.000000, 0.005236,
0.047120, 0.057592, 0.015707, 0.010471, 0.047120,
0.062827, 0.005236, 0.262799, 0.000000, 0.000000,
0.000000, 0.000000, 0.000802, 0.000000, 0.000000,
0.000000, 0.001604, 0.000000, 0.052927, 0.000000,
0.039294, 0.026178, 0.041885, 0.031414, 0.000000,
0.000000, 0.041885, 0.073298, 0.000000, 0.308874,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.000000, 0.000000, 0.000000,
0.236568, 0.000000, 0.000000, 0.000000, 0.000000,
0.000000, 0.000000, 0.000000, 0.020942, 0.015707,
0.000000, 0.029010])
clf = LDA() clf.fit(X,y) print(clf.predict([0, 2]))
并向我显示此错误消息:
clf.fit(X, y)
n_samples, n_features = X.shape
ValueError: need more than 1 value to unpack
我该怎么做才能解决它?我在文档中找不到此解决方案。
您的数组是一维的。 当您执行以下操作时:
n_samples, n_features = X.shape
X.shape不是样本和模型的矩阵,而是一个形状数组(106,)。您需要多个样本。照原样,您有一堆功能和一个示例。具有 4 个特征的 4 个样本的矩阵将定义为:
featureMat = np.array([[ 10, 30, 40, 50],
[ 5, 6, 7, 8],
[ 54, 75, 6, 56],
[ 65, 34, 23, 22]])
所以 featureMat.shape 将是 (4,4)。