res = cache.get(item)typeError:不可用的类型(我要遇到的错误是在运行石灰解释器之后)

Question

代码如下：

# coding=utf-8 from __future__ import print_function
import pandas as pd
from sklearn.model_selection import train_test_split
from sklearn.ensemble import RandomForestClassifier
from sklearn.metrics import accuracy_score
from sklearn.metrics import confusion_matrix
import sklearn
import sklearn.datasets
import sklearn.ensemble
import numpy as np
import lime
import lime.lime_tabular
class Randomforest:
    def __init__(self):
        self.trained_model = None
        self.clf = None
        pass
    def split_dataset(self, dataset, train_percentage, feature_headers, target_header):
        # Split dataset into train and test dataset
        self.train_x, self.test_x, self.train_y, self.test_y = train_test_split(dataset[feature_headers], dataset[target_header],
                                                            train_size=train_percentage)
        return self.train_x, self.test_x, self.train_y, self.test_y
    def random_forest_classifier(self, features, target):
        self.clf = RandomForestClassifier()
        self.clf.fit(features, target)
        return self.clf
    def predictProba(self, input):
        return self.clf.predict_proba(input)
    def predict_proba(self, input):
        return self.predictProba(input)
    rf = Randomforest()
    Headers = ["vectorName", "abmessungen_Lange", "starrflugler", "tragflachen", "triebwerke", "rumpf", "leitwerk", "drehflugler",
                "drehflugler_Rumpf_Cockpit", "doppeldecker", "tragflachen_Stellung_Gerade","hochDecker","triebwerke_triebwerksart",
                "rumpf_Rumpfformen","drehflugler_Rotor","drehflugler_Triebwerk","drehflugler_Rumpf","drehflugler_Heckausleger",
                "drehflugler_Triebwerk_Lufteinlass","drehflugler_Triebwerk_Luftauslass", "result"]
    dataset = pd.read_csv("filename.csv")
    train_x, test_x, train_y, test_y = rf.split_dataset(dataset, 0.7, Headers[1:-1], Headers[-1])
    trained_model = rf.random_forest_classifier(train_x, train_y)
    predictions = trained_model.predict(test_x)
    feature_names = Headers[1:-1]
    class_names = ['1', '0']
    explainer = lime.lime_tabular.LimeTabularExplainer(train_x, feature_names= feature_names, class_names=class_names,
                                                   categorical_features= None, categorical_names=None, discretize_continuous=True,
                                                   kernel_width=3)

错误如下：

Traceback (most recent call last):
File "/home/veerap/PycharmProjects/RandomForest/rf.py", line 79, in <module>
categorical_names=None, categorical_features=None, kernel_width=3)
File "/home/veerap/.local/lib/python2.7/site-packages/lime/lime_tabular.py", line 164, in __init__
self.feature_names, labels=training_labels)
File "/home/veerap/.local/lib/python2.7/site-packages/lime/discretize.py", line 125, in __init__
random_state=random_state)
File "/home/veerap/.local/lib/python2.7/site-packages/lime/discretize.py", line 46, in __init__
bins = self.bins(data, labels)
File "/home/veerap/.local/lib/python2.7/site-packages/lime/discretize.py", line 130, in bins
qts = np.array(np.percentile(data[:, feature], [25, 50, 75]))
File "/home/veerap/.local/lib/python2.7/site-packages/pandas/core/frame.py", line 2139, in __getitem__
return self._getitem_column(key)
File "/home/veerap/.local/lib/python2.7/site-packages/pandas/core/frame.py", line 2146, in _getitem_column
return self._get_item_cache(key)
File "/home/veerap/.local/lib/python2.7/site-packages/pandas/core/generic.py", line 1840, in _get_item_cache
res = cache.get(item)
TypeError: unhashable type

在运行石灰解释器后，我会遇到此错误，如上面的代码所示。我不确定这是PANDAS软件包错误还是Lime软件包错误。我尝试了很多方法来调试它，例如将数据框发送而不是将列表发送到Lime解释器功能等。但是没有工作的方法。如果有人尽早让我知道一个问题，那就太好了。谢谢。

Answer 1

问题来自于您通过pandas dataframe(我认为(我遇到的问题。

最简单的方法是在您的情况下替换train_x train_x.values

希望这个hepls
欢呼，