[英]Getting NotImplementedError when using data from dask when running an OLS regression
What I want to do is actually pretty simple. 我想做的实际上很简单。 I want to run a OLS regression by using data from dask. 我想通过使用dask的数据来运行OLS回归。 It is fine, if I just install data into dask dataframe or I use pandas (but I get memory error when I use Pandas). 很好,如果我只是将数据安装到dask数据帧中或使用了pandas(但是使用Pandas时出现内存错误)。
# import modules
import statsmodels.formula.api as smf
import dask.dataframe as dd
df = dd.read_csv(input_file)
mod = smf.ols(formula='lnq ~ lnp + lnp:C(product_code)+ C(product_code)', data=df)
results = mod.fit(cov_type = 'cluster', cov_kwds={'groups': df['product_code']})
print(results.summary())
However, I get the following error: 但是,出现以下错误:
File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 710, in runfile
execfile(filename, namespace)
File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 101, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)
File "H:/yoox_3.py", line 11, in <module>
mod = smf.ols(formula='lnq ~ lnp + lnp:C(product_code)+ C(product_code)', data=df)
File "C:\ProgramData\Anaconda3\lib\site-packages\statsmodels\base\model.py", line 155, in from_formula
missing=missing)
File "C:\ProgramData\Anaconda3\lib\site-packages\statsmodels\formula\formulatools.py", line 68, in handle_formula_data
NA_action=na_action)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\highlevel.py", line 310, in dmatrices
NA_action, return_type)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\highlevel.py", line 165, in _do_highlevel_design
NA_action)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\highlevel.py", line 70, in _try_incr_builders
NA_action)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\build.py", line 696, in design_matrix_builders
NA_action)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\build.py", line 448, in _examine_factor_types
done = cat_sniffers[factor].sniff(value)
File "C:\ProgramData\Anaconda3\lib\site-packages\patsy\categorical.py", line 204, in sniff
for value in data:
File "C:\ProgramData\Anaconda3\lib\site-packages\dask\dataframe\core.py", line 1703, in __getitem__
raise NotImplementedError()
NotImplementedError
Any ideas? 有任何想法吗?
我不认为statsmodels支持dask数据框
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