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python Programming Glossary: lil_matrixHow to set up and solve simultaneous equations in python http://stackoverflow.com/questions/14367331/how-to-set-up-and-solve-simultaneous-equations-in-python using scipy.sparse from scipy.sparse import spdiags lil_matrix vstack hstack from scipy.sparse.linalg import spsolve import.. n diag nrange 1 0 1 0 1 n 1 n 1 # upper right block m_to_M lil_matrix n_to_N m_to_M 1 0 nrange 1 1 .reshape n 2 1 # lower right block.. 1 0 nrange 1 1 .reshape n 2 1 # lower right block m_to_N lil_matrix n 1 n 1 m_to_N 0 nrange 1 .reshape n 1 1 # build A combine all..
Iterating through a scipy.sparse vector (or matrix) http://stackoverflow.com/questions/4319014/iterating-through-a-scipy-sparse-vector-or-matrix For example if I do the following from scipy.sparse import lil_matrix x lil_matrix 20 1 x 13 0 1 x 15 0 2 c 0 for i in x print c i.. I do the following from scipy.sparse import lil_matrix x lil_matrix 20 1 x 13 0 1 x 15 0 2 c 0 for i in x print c i c c 1 the output.. docs.scipy.org doc scipy reference generated scipy.sparse.lil_matrix.html and searched around a bit but I can't seem to find a solution..
Python: how do you store a sparse matrix using python? http://stackoverflow.com/questions/5164106/python-how-do-you-store-a-sparse-matrix-using-python nltk import cPickle import numpy from scipy.sparse import lil_matrix from nltk.corpus import wordnet as wn from nltk.corpus import.. g text1 text 1 500 arr set text1 arr list arr mat lil_matrix len arr len arr markov arr f.close I need to store this mat.. g text1 text 1 500 arr set text1 arr list arr mat lil_matrix len arr len arr markov arr f open 'spmatrix.pkl' 'wb' cPickle.dump..
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