code: def dot(self, other, sparse=True):
      other_shape = other.shape
      try:
          other = naked(other)
      except TypeError:
          return NotImplemented
  
      if not sparse:
          a = self.toarray()
          if issparse(other):
              other = other.toarray().reshape(other_shape)
  
          x = a.dot(other)
      else:
          if len(other_shape) == 1:
              x = self.spmatrix.dot(other.T)
          else:
              x = self.spmatrix.dot(other)
      if issparse(x):
          if x.shape == (1, 1):
              # return scalar
              return x.toarray()[0, 0]
          shape = (x.shape[1],)
          return SparseNDArray(x, shape=shape)
      return get_array_module(x).asarray(x)
  
file_path: mars/mars/lib/sparse/vector.py
imports: from .array import SparseArray, SparseNDArray
  from .core import get_array_module, get_sparse_module, naked, issparse, np, is_cupy
label_desc: Use image node_id 7 for calling the SparseVector obj's underlying member method code with example usage: obj.dot(other, sparse) and returns: get_array_module, SparseNDArray, NotImplemented, x