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View Code? Open in Web Editor NEWSelf organizing Kohonen map in Python with periodic boundary conditions
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kuonanhong volodymyrahafonov h03d silvaemerson ffffffllllll kuyu12 amirunpri2018 kudryaa jumbokh alexanderamadhan dsmigly nadezhdakor lastad prayoginotonegoro st506st506 bsalami roustask haibuihoang johanrunal manasa-sandhya-g frozznight teemuso yxinjiang sglee-vcanus wzg16 mehe2na arwahossam lion-oh johnson-geo latawclarins xiya-duan shirinmhb pierre545 shunsunsun helzinko kenzeng24 prconcepcion atfrank ashinkrishnan franckess elvinhajizada d-i-an-a murphy0409 aaron-msb oog-gamro dimonussir5som's Issues
How could I obtain the SOM neurons weight? (or called neurons center)
Based on my understanding of how SOM works, I think there should be a weight values or called neurons center could be found, but i didn't find the related methods/functions in the document, how could I find it?
May I know how to do prediction out of it please?
Hi,
- May I know a prediction function available?
- In Creating dummy target values in the example, you have done 500 each, is that random, are can we do some kmeans before that and find the labels and assign that
IndexError: list index out of range
Im try to use the iris dataset, but I get errors all the time
my code
iris = pd.read_csv('Iris.csv')
dataset = iris.drop(['Species','Id'],axis = 1)
from sklearn.preprocessing import StandardScaler
standard = StandardScaler()
cleanDataSet = standard.fit_transform(dataset)
cleanDataSet = pd.DataFrame(cleanDataSet).dropna()
som = SOM(10, 10) # initialize the SOM
som.fit(cleanDataSet.to_numpy(), 10000, save_e=True, interval=100)
species = iris['Species']
species_number = species.astype('category').cat.codes
som.plot_point_map(cleanDataSet.to_numpy(), species_number, species)
and the error
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
<ipython-input-134-1f7b119e8ffe> in <module>()
----> 1 som.plot_point_map(cleanDataSet.to_numpy(), species_number, species)
1 frames
/content/som.py in <listcomp>(.0)
285
286 if not activities:
--> 287 patches = [mptchs.Patch(color=colors[i], label=targetnames[i]) for i in range(len(targetnames))]
288 legend = plt.legend(handles=patches, bbox_to_anchor=(0., 1.02, 1., .102), loc=3, ncol=len(targetnames),
289 mode="expand", borderaxespad=0.1)
IndexError: list index out of range
ValueError: Length of passed values is 15, index implies 4
I'm don't understand why is this error?
my code:
iris = pd.read_csv('Iris.csv')
dataset = iris.drop(['Species','Id'],axis = 1)
from sklearn.preprocessing import StandardScaler
standard = StandardScaler()
cleanDataSet = standard.fit_transform(dataset)
cleanDataSet = pd.DataFrame(cleanDataSet).dropna()
som = SOM(10, 10) # initialize the SOM
som.fit(cleanDataSet.to_numpy(), 10000, save_e=True, interval=100)
species = iris['Species']
species_number = species.astype('category').cat.codes
# take row 7 for get neighbors
som.get_neighbors(cleanDataSet.iloc[7], data= cleanDataSet.to_numpy(), labels=species.unique() , d=0)
and the error:
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-188-ae42eea72444> in <module>()
----> 1 som.get_neighbors(cleanDataSet.iloc[7], data= cleanDataSet.to_numpy(), labels=['7'] , d=0)
4 frames
/usr/local/lib/python3.6/dist-packages/pandas/core/series.py in __init__(self, data, index, dtype, name, copy, fastpath)
247 'Length of passed values is {val}, '
248 'index implies {ind}'
--> 249 .format(val=len(data), ind=len(index)))
250 except TypeError:
251 pass
ValueError: Length of passed values is 15, index implies 4
IndexError: list index out of range
hi there,
i keep on having this issue:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/core/interactiveshell.py", line 3331, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "", line 1, in
som.plot_point_map(dfs.to_numpy(), labels, np.unique(labels))
File "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", line 278, in plot_point_map
markers[targets[cnt]], color=c, markersize=12)
IndexError: list index out of range
can you help?
alex
create initialialization from principle components
Install from pypi failing
Hi there - thanks for making this available!
Installation with pip currently fails for me on MacOS 10.15.7 and python 3.6.13 with this error:
...
with open('requirements.txt', 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: 'requirements.txt'
...
Installing directly from github works with:
pip install git+https://github.com/alexarnimueller/som
How to change learning rate ??
i want to change learning rate, where is this ??
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