I am doing customer value prediction using lifetimes package. I am unable to run the lifetimes.GammaGammaFitter model. It is showing Unexpected exception formatting exception. Falling back to standard exception when running it.
The dataframe looks like below
return_customers_summary.head()
WH_PLAYER_ID frequency recency T monetary_value pred_num_txn
10130001022 1.0 17.0 61.0 6.251061 1.0
10130001057 60.0 69.0 70.0 0.955752 25.0
10130001028 1.0 9.0 69.0 0.000000 0.0
When I try to run the Gamma Gamma model, I am getting the following error
ggf = lifetimes.GammaGammaFitter(penalizer_coef = 0.001)
ggf.fit(return_customers_summary['frequency'], return_customers_summary['monetary_value'])
Unexpected exception formatting exception. Falling back to standard exception.
Traceback (most recent call last):
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3369, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "C:\Users\subven\AppData\Local\Temp\ipykernel_17176\2939325914.py", line 5, in <cell line: 5>
ggf.fit(return_customers_summary['frequency'],
File "C:\Users\subven\Anaconda3\lib\site-packages\lifetimes\fitters\gamma_gamma_fitter.py", line 214, in fit
File "C:\Users\subven\Anaconda3\lib\site-packages\lifetimes\utils.py", line 444, in _check_inputs
ValueError: There exist non-positive (<= 0) values in the monetary_value vector.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 1982, in showtraceback
stb = self.InteractiveTB.structured_traceback(
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\ultratb.py", line 1118, in structured_traceback
return FormattedTB.structured_traceback(
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\ultratb.py", line 1012, in structured_traceback
return VerboseTB.structured_traceback(
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\ultratb.py", line 865, in structured_traceback
formatted_exception = self.format_exception_as_a_whole(etype, evalue, etb, number_of_lines_of_context,
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\ultratb.py", line 818, in format_exception_as_a_whole
frames.append(self.format_record(r))
File "C:\Users\subven\Anaconda3\lib\site-packages\IPython\core\ultratb.py", line 736, in format_record
result += ''.join(_format_traceback_lines(frame_info.lines, Colors, self.has_colors, lvals))
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\utils.py", line 145, in cached_property_wrapper
value = obj.__dict__[self.func.__name__] = self.func(obj)
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\core.py", line 698, in lines
pieces = self.included_pieces
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\utils.py", line 145, in cached_property_wrapper
value = obj.__dict__[self.func.__name__] = self.func(obj)
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\core.py", line 649, in included_pieces
pos = scope_pieces.index(self.executing_piece)
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\utils.py", line 145, in cached_property_wrapper
value = obj.__dict__[self.func.__name__] = self.func(obj)
File "C:\Users\subven\Anaconda3\lib\site-packages\stack_data\core.py", line 628, in executing_piece
return only(
File "C:\Users\subven\Anaconda3\lib\site-packages\executing\executing.py", line 164, in only
raise NotOneValueFound('Expected one value, found 0')
executing.executing.NotOneValueFound: Expected one value, found 0
