Problem with -save_model on Windows Running toy example

[fedro86]

If I run the toy example:

 import pywFM
 import numpy as np
 import pandas as pd

 features = np.matrix([
 #     Users  |     Movies     |    Movie Ratings   | Time | Last Movies Rated
 #    A  B  C | TI  NH  SW  ST | TI   NH   SW   ST  |      | TI  NH  SW  ST
    [1, 0, 0,  1,  0,  0,  0,   0.3, 0.3, 0.3, 0,     13,   0,  0,  0,  0 ],
    [1, 0, 0,  0,  1,  0,  0,   0.3, 0.3, 0.3, 0,     14,   1,  0,  0,  0 ],
    [1, 0, 0,  0,  0,  1,  0,   0.3, 0.3, 0.3, 0,     16,   0,  1,  0,  0 ],
    [0, 1, 0,  0,  0,  1,  0,   0,   0,   0.5, 0.5,   5,    0,  0,  0,  0 ],
    [0, 1, 0,  0,  0,  0,  1,   0,   0,   0.5, 0.5,   8,    0,  0,  1,  0 ],
    [0, 0, 1,  1,  0,  0,  0,   0.5, 0,   0.5, 0,     9,    0,  0,  0,  0 ],
    [0, 0, 1,  0,  0,  1,  0,   0.5, 0,   0.5, 0,     12,   1,  0,  0,  0 ]
 ])
 target = [5, 3, 1, 4, 5, 1, 5]

 fm = pywFM.FM(task='regression', num_iter=5)

 model = fm.run(features[:5], target[:5], features[5:], target[5:])

I got this error

ERROR: the parameter save_model does not exist
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pywFM\__init__.py", line 231, in run
    rlog = pd.read_csv(rlog_path, sep='\t')
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pandas\io\parsers.py", line 498, in parser_f
    return _read(filepath_or_buffer, kwds)
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pandas\io\parsers.py", line 275, in _read
    parser = TextFileReader(filepath_or_buffer, **kwds)
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pandas\io\parsers.py", line 590, in __init__
    self._make_engine(self.engine)
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pandas\io\parsers.py", line 731, in _make_engine
    self._engine = CParserWrapper(self.f, **self.options)
  File "C:\Users\FedRo\Anaconda\lib\site-packages\pandas\io\parsers.py", line 1103, in __init__
    self._reader = _parser.TextReader(src, **kwds)
  File "pandas\parser.pyx", line 518, in pandas.parser.TextReader.__cinit__ (pandas\parser.c:5030)
ValueError: No columns to parse from file

so it looks like that -save_model doesn't work. My temporary solution is change lines 162 and 163 in __init__.py from:

                "-verbosity %d" % self.__verbose,
                "-save_model %s" % model_path]

to:

                "-verbosity %d" % self.__verbose]
                #"-save_model %s" % model_path]

The model starts working, you can use model prediction, but the model isn't saved.

[jfloff]

Did you compiled libfm from source, or have you used any of the installers available? The save_model operation appears in this commit which is from October 2015. The installers on libfm.org are from 2014 and the windows one from 2013.

[fedro86]

I tried both: windows executables and compiled libfm-1.42.src from source in cygwin with make and gcc.

[jfloff]

Both of them won't work. You have to clone the libfm repository and compile from there. Taken from the README:

git clone https://github.com/srendle/libfm /home/libfm
cd /home/libfm/ && make all

[fedro86]

I was just downloading it :) thank you