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[Ken Arnold <kenneth.arnold@xxxxxxxxx>]

Public bug reported:

It fails rather dramatically:

/home/kcarnold/code/divisi/csc/divisi/normalized_view.pyc in __getitem__(self, indices)
    263         else:
    264             term, document = indices
--> 265         return self.tf(term, document) * self.idf(term)
    266 
    267 

/home/kcarnold/code/divisi/csc/divisi/normalized_view.pyc in tf(self, term, document)
    253         else:
    254             term_count = self.tensor[term, document]
--> 255         return term_count / self.counts_for_document[document]
    256 
    257     def idf(self, term):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in __div__(self, other)
    327         you might be able to make it divide by some other kind of object.
    328         """
--> 329         return self * (1.0/other)
    330 
    331     def __idiv__(self, other):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in __mul__(self, other)
    272             return self.cmul(other)
    273         else:
--> 274             return self.dot(other)
    275 
    276     def __rmul__(self, other):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in dot(self, other, mode, into, reverse)
    969     def dot(self, other, mode=0, into=None, reverse=False):
    970         if max(self.ndim, other.ndim) == 1:
--> 971             return self._vectordot(other, reverse=reverse)
    972         if max(self.ndim, other.ndim) == 2:
    973             return self._2ddot(other, reverse=reverse)

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in _vectordot(self, other, reverse)
    995             raise IndexError("Incompatible dimensions for sparse vectordot (%r._vectordot(%r)" % (self, other))
    996         if not isinstance(other, DictTensor):
--> 997             other = other.to_sparse()
    998         if len(other) < len(self):
    999             other, self = self, other

AttributeError: 'numpy.ndarray' object has no attribute 'to_sparse'

** Affects: divisi
     Importance: Undecided
         Status: New

-- 
tf-idf views don't support slicing
https://bugs.launchpad.net/bugs/439070
You received this bug notification because you are a member of
Commonsense Computing, which is the registrant for Divisi.

Status in Divisi: New

Bug description:
It fails rather dramatically:

/home/kcarnold/code/divisi/csc/divisi/normalized_view.pyc in __getitem__(self, indices)
    263         else:
    264             term, document = indices
--> 265         return self.tf(term, document) * self.idf(term)
    266 
    267 

/home/kcarnold/code/divisi/csc/divisi/normalized_view.pyc in tf(self, term, document)
    253         else:
    254             term_count = self.tensor[term, document]
--> 255         return term_count / self.counts_for_document[document]
    256 
    257     def idf(self, term):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in __div__(self, other)
    327         you might be able to make it divide by some other kind of object.
    328         """
--> 329         return self * (1.0/other)
    330 
    331     def __idiv__(self, other):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in __mul__(self, other)
    272             return self.cmul(other)
    273         else:
--> 274             return self.dot(other)
    275 
    276     def __rmul__(self, other):

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in dot(self, other, mode, into, reverse)
    969     def dot(self, other, mode=0, into=None, reverse=False):
    970         if max(self.ndim, other.ndim) == 1:
--> 971             return self._vectordot(other, reverse=reverse)
    972         if max(self.ndim, other.ndim) == 2:
    973             return self._2ddot(other, reverse=reverse)

/home/kcarnold/code/divisi/csc/divisi/tensor.pyc in _vectordot(self, other, reverse)
    995             raise IndexError("Incompatible dimensions for sparse vectordot (%r._vectordot(%r)" % (self, other))
    996         if not isinstance(other, DictTensor):
--> 997             other = other.to_sparse()
    998         if len(other) < len(self):
    999             other, self = self, other

AttributeError: 'numpy.ndarray' object has no attribute 'to_sparse'