Python 3.7:xgboost.core.XGBoostError

jk9hmnmh  于 2023-04-22  发布在  Python
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我是Python新手,在运行xgBoost时遇到了这个错误:xgboost.core.XGBoostError: [15:49:05] C:/Users/Administrator/workspace/xgboost-win64_release_1.3.0/src/learner.cc:567: Check failed: mparam_.num_feature != 0 (0 vs. 0) : 0 feature is supplied. Are you using raw Booster interface?
我试着搜索这个错误,找不到太多有用的资源。
我猜错误发生在预测阶段。但我不确定。我的数据集由两列组成:["Posts Frequency","Likes Count"]如下所示。

这是我的代码:

# Load Dependencies
import pandas as pd
from numpy import where
import matplotlib.pyplot as plt
import numpy as np
from numpy import unique
from sklearn import metrics
import warnings
warnings.filterwarnings('ignore')

#  Load the Data
# Define Columns
names = ["Posts Frequency","Likes Count"]

data = pd.read_csv("RANKING TEST (1).csv", encoding="utf-8", sep=";", delimiter=None,
                 names=names, delim_whitespace=False,
                 header=0, engine="python")
X = data.values[:,0:1]
y = data.values[:,1]


# Training 
from sklearn.model_selection import GroupShuffleSplit

gss = GroupShuffleSplit(test_size=.20, n_splits=1, random_state = 7).split(data, groups=data['Posts Frequency'])

X_train_inds, X_test_inds = next(gss)

train_data= data.iloc[X_train_inds]
X_train = train_data.loc[:, ~train_data.columns.isin(['Posts Frequency','Likes Count'])]
y_train = train_data.loc[:, train_data.columns.isin(['Likes Count'])]

test_data= data.iloc[X_test_inds]

X_test = test_data.loc[:, ~test_data.columns.isin(['Likes Count'])]
y_test = test_data.loc[:, test_data.columns.isin(['Likes Count'])]


from sklearn.model_selection import GroupShuffleSplit

gss = GroupShuffleSplit(test_size=.20, n_splits=1, random_state = 7).split(data, groups=data['Posts Frequency'])

X_train_inds, X_test_inds = next(gss)

train_data= data.iloc[X_train_inds]
X_train = train_data.loc[:, ~train_data.columns.isin(['Posts Frequency','Likes Count'])]
y_train = train_data.loc[:, train_data.columns.isin(['Likes Count'])]

groups = train_data.groupby('Posts Frequency').size().to_frame('size')['size'].to_numpy()

test_data= data.iloc[X_test_inds]

X_test = test_data.loc[:, ~test_data.columns.isin(['Likes Count'])]
y_test = test_data.loc[:, test_data.columns.isin([' Likes Count'])]



import xgboost as xgb

model = xgb.XGBRanker(
    tree_method='gpu_hist',
    booster='gbtree',
    objective='rank:pairwise',
    random_state=42,
    learning_rate=0.1,
    colsample_bytree=0.9,
    eta=0.05,
    max_depth=6,
    n_estimators=110,
    subsample=0.75
    )

model.fit(X_train, y_train, group=groups, verbose=True)

# make predictions
def predict(model, data):
    return model.predict( data.loc[:, ~data.columns.isin( ['Posts Frequency'] )] )

predictions = (data.groupby( 'Posts Frequency' )
               .apply( lambda x: predict( model, x ) ))

有人能帮我吗?
感谢您发送编修。
索菲亚

tzcvj98z

tzcvj98z1#

你需要传递至少一个特征到xgBoost。也许可以在这里检查你在做什么:

X_train = train_data.loc[:, ~train_data.columns.isin(['Posts Frequency','Likes Count'])]

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