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我有一個數據集的面積和價格從42個公寓。我正在使用Python與數據庫,我加載了一個csv文件作爲列分隔符,
。之後,我將區域指定爲整數和價格雙倍。於是我進口的圖形庫和做迴歸:適合功能無法執行減少與靈活類型
import matplotlib.pyplot as plt
from sklearn import linear_model
後來我讀我的數據庫:
aptos=sqlContext.read.format('csv').options(header='true',
interSchema='true').load('/FileStore/tables/yl3r1mgv1507304115516/aptos_dataset-5ad32.csv')
display(aptos)
下列行,我創建的輸入變量從數據庫列:
X=aptos.select("area").collect()
Y=aptos.select("precio").collect()
然後我創建我的迴歸模型:
regr = linear_model.LinearRegression()
在這一點上我沒有問題。但是,當我運行下面一行:
regr.fit(X,Y)
我得到錯誤:
TypeError: cannot perform reduce with flexible type
我可以看到更多的細節:
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<command-2158797891361999> in <module>()
1
2
----> 3 regr.fit(X,Y)
/databricks/python/local/lib/python2.7/site-packages/sklearn/linear_model/base.pyc in fit(self, X, y, sample_weight)
517 X, y, X_offset, y_offset, X_scale = self._preprocess_data(
518 X, y, fit_intercept=self.fit_intercept, normalize=self.normalize,
--> 519 copy=self.copy_X, sample_weight=sample_weight)
520
521 if sample_weight is not None:
/databricks/python/local/lib/python2.7/site-packages/sklearn/linear_model/base.pyc in _preprocess_data(X, y, fit_intercept, normalize, copy, sample_weight, return_mean)
197 else:
198 X_scale = np.ones(X.shape[1])
--> 199 y_offset = np.average(y, axis=0, weights=sample_weight)
200 y = y - y_offset
201 else:
/databricks/python/local/lib/python2.7/site-packages/numpy/lib/function_base.pyc in average(a, axis, weights, returned)
933
934 if weights is None:
--> 935 avg = a.mean(axis)
936 scl = avg.dtype.type(a.size/avg.size)
937 else:
/databricks/python/local/lib/python2.7/site-packages/numpy/core/_methods.pyc in _mean(a, axis, dtype, out, keepdims)
63 dtype = mu.dtype('f8')
64
---> 65 ret = umr_sum(arr, axis, dtype, out, keepdims)
66 if isinstance(ret, mu.ndarray):
67 ret = um.true_divide(
TypeError: cannot perform reduce with flexible type
我很抱歉,但我不能分享我的數據庫。我是Python的新手,我對R有更多的專業知識。我會很感激你的幫助。
什麼是導入數據的架構?你可能有'X'和'Y'的字符串。另外,它是'inferSchema ='true''而不是'interSchema ='true''。 – Abdou