Error in max-product algorithm

[XintianHan]

I just copy your code in max-product algorithm example. But I got AttributeError: 'NoneType' object has no attribute 'normalize'.

I guess you do not initialize the value when running the max-product algorithm.

[danbar]

Thank you for your feedback. Please post the full error message, since I cannot reproduce it with the latest master 038dcda.

[XintianHan]

Sure.I use the code fglib/examples/example_max. And I got TypeError: object of type 'property' has no len().

[danbar]

I tried a fresh install with

$ pip install fglib

and got the following output

$ python3 example_max
Maximum of variable node x4:
0.6
Maximum of variable node x3:
0.6
Maximum of variable node x2:
0.586956521739
Unnormalized Maximum of variable node x1:
0.027

Could you provide the output of $ python --version and $ pip list?

[XintianHan]

Sure. I tried to uninstall the package and install it again. But it still did not work. $ python --version Python 3.6.1 :: Anaconda custom (x86_64)

$ pip list alabaster (0.7.10) anaconda-client (1.6.3) anaconda-navigator (1.6.2) anaconda-project (0.6.0) appnope (0.1.0) appscript (1.0.1) asn1crypto (0.22.0) astroid (1.4.9) astropy (2.0.1) Babel (2.4.0) backports.shutil-get-terminal-size (1.0.0) beautifulsoup4 (4.6.0) bitarray (0.8.1) blaze (0.10.1) bleach (1.5.0) bokeh (0.12.5) boto (2.46.1) Bottleneck (1.2.1) cffi (1.10.0) chardet (3.0.3) click (6.7) cloudpickle (0.2.2) clyent (1.2.2) colorama (0.3.9) conda (4.3.27) contextlib2 (0.5.5) cryptography (1.8.1) CVXcanon (0.1.1) cvxopt (1.1.8) cvxpy (0.4.9) cycler (0.10.0) Cython (0.25.2) cytoolz (0.8.2) dask (0.14.3) datashape (0.5.4) decorator (4.1.2) dill (0.2.6) distributed (1.16.3) docutils (0.13.1) ecos (2.0.4) entrypoints (0.2.2) et-xmlfile (1.0.1) fastcache (1.0.2) fglib (0.1) Flask (0.12.2) Flask-Cors (3.0.2) gevent (1.2.1) greenlet (0.4.12) h5py (2.7.0) HeapDict (1.0.0) html5lib (0.999) idna (2.5) imageio (2.1.2) imagesize (0.7.1) ipykernel (4.6.1) ipython (5.3.0) ipython-genutils (0.2.0) ipywidgets (6.0.0) isort (4.2.5) itsdangerous (0.24) jdcal (1.3) jedi (0.10.2) Jinja2 (2.9.6) jsonschema (2.6.0) jupyter (1.0.0) jupyter-client (5.0.1) jupyter-console (5.1.0) jupyter-core (4.3.0) kenlm (0.0.0) lazy-object-proxy (1.2.2) llvmlite (0.19.0) locket (0.2.0) lxml (3.7.3) Markdown (2.6.9) MarkupSafe (0.23) matplotlib (2.0.2) missingno (0.3.7) mistune (0.7.4) Mosek (-version-) moviepy (0.2.3.2) mpmath (0.19) msgpack-python (0.4.8) multipledispatch (0.4.9) multiprocess (0.70.4) navigator-updater (0.1.0) nbconvert (5.1.1) nbformat (4.3.0) networkx (2.0) nltk (3.2.3) nose (1.3.7) notebook (5.0.0) numba (0.34.0) numexpr (2.6.2) numpy (1.13.1) numpydoc (0.6.0) odo (0.5.0) olefile (0.44) openpyxl (2.4.7) packaging (16.8) pandas (0.20.3) pandas-datareader (0.5.0) pandocfilters (1.4.1) partd (0.3.8) pathlib2 (2.2.1) patsy (0.4.1) pep8 (1.7.0) pexpect (4.2.1) pickleshare (0.7.4) Pillow (4.1.1) pip (9.0.1) plotly (2.0.15) ply (3.10) prompt-toolkit (1.0.14) psutil (5.2.2) ptyprocess (0.5.1) py (1.4.33) pycosat (0.6.2) pycparser (2.17) pycrypto (2.6.1) pycurl (7.43.0) pyflakes (1.5.0) Pygments (2.2.0) pyheatmap (0.1.10) pyldpc (0.7.6) pylint (1.6.4) pynance (0.5.1) pyodbc (4.0.16) pyOpenSSL (17.0.0) pyparsing (2.1.4) pytest (3.0.7) python-dateutil (2.6.0) pytz (2017.2) PyWavelets (0.5.2) PyYAML (3.12) pyzmq (16.0.2) QtAwesome (0.4.4) qtconsole (4.3.0) QtPy (1.2.1) readme2tex (0.0.1b2) requests (2.14.2) requests-file (1.4.2) requests-ftp (0.3.1) rope-py3k (0.9.4.post1) scikit-image (0.13.0) scikit-learn (0.19.0) scipy (0.19.1) scs (1.2.6) seaborn (0.7.1) setuptools (27.2.0) simplegeneric (0.8.1) singledispatch (3.4.0.3) six (1.10.0) sklearn (0.0) snowballstemmer (1.2.1) sortedcollections (0.5.3) sortedcontainers (1.5.7) Sphinx (1.5.6) spyder (3.1.4) SQLAlchemy (1.1.9) statsmodels (0.8.0) sympy (1.0) tables (3.4.2) tblib (1.3.2) terminado (0.6) testpath (0.3) toolz (0.8.2) torch (0.2.0.post4) torchvision (0.1.9) tornado (4.5.1) tqdm (4.11.2) traitlets (4.3.2) unicodecsv (0.14.1) urllib3 (1.22) wcwidth (0.1.7) Werkzeug (0.12.2) wheel (0.29.0) widgetsnbextension (2.0.0) wrapt (1.10.10) xgboost (0.6a2) xlrd (1.0.0) XlsxWriter (0.9.6) xlwings (0.10.4) xlwt (1.2.0) zict (0.1.2)

[XintianHan]

It works after I upgrade the package. Thanks a lot for your help!